DD MK12 SPR 5.56 NATO 77 gr. SMK QL/Node/OBT Help

[longrangehunter]

Hey guys,

I have a new rifle for a 2 man Team LR Tactical Match, a Daniel Defense MK12 5.56 NATO, wears a 18" BBL. 1:7" Twist. I wanting to use the bag of Military Brass I won last year, looks like a 1,000 pieces to me and it appears to be all FC 12 223 REM Brass. It's all cleaned, sized, and trimmed. I'm not familiar with this brass, and whether or not it's as tough as the military L.C. or W.C. brass. Does anyone here know?

I'll have to load up a few to test fire and then weigh them for H2O capacity.

I'm curious to know how much of a difference my other load for the M4 load developed for a 14.5" BBL 1:7" vs. the MK12's 18" BBL 1:7" will have on the OBT?

The M4 load was a follows:

77 SMK
22.8 H335
CCI-41
L.C. Brass @ 2.260" coal
(This is very close to the node 6 @ .804 ms.)

Since the DD MK12 wears a longer barrel I my attempt to use the RL-15, or RL-17 I have on hand (none of which is being used for anything else), VarGet, H4895, H322, BL-C(2) I have a little VV N133 <2lbs. I could go out an buy something else, but I'd prefer to use what I have on hand?

I've heard a few guys have been having good luck with IMR8208 XBR with the 77 SMK.

Thanks guys.

PS: I have not even shot this as of yet, but I plan on doing that tomorrow.

 

[SJB358]

Kevin I'm using H4895 with the 77 Tipped MKs. Can't tell you speed, but I'm up around 24 grains in Lapua brass.

That 77 grain SMK changed the way I looked at the 5.56 on 2004. Accurate and just a solid level of performance.

 

[Dwh7271]

Kevin,
Here are two runs, one with 14.5" and one with 18". Should show the difference. Let me know what you would like and I'll run them.

Cartridge          : 5.56 mm NATO - 5.56 x 45 mm
Bullet             : .224, 77, Sierra HPBT MatchK 9377G
Useable Case Capaci: 23.746 grain H2O = 1.542 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 14.5 inch = 368.3 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 61000 psi, or 420 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

91 loads produced a Loading Ratio below user-defined minimum of 85%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
ReloadSwiss RS 52                  109.6     24.8     1.61    2643    96.8    61001   13041   0.791  ! Near Maximum !
IMR 3031                           109.5     22.4     1.45    2639    99.7    61001   12347   0.795  ! Near Maximum !
Hodgdon CFE223                     102.2     24.9     1.62    2621    95.1    61001   12860   0.791  ! Near Maximum !
Winchester 748                     100.4     23.6     1.53    2620    97.3    61001   12556   0.794  ! Near Maximum !
Alliant AR-Comp                    104.2     22.1     1.43    2618   100.0    61001   11399   0.796  ! Near Maximum !
Bofors RP11 TZ ~approximation      103.6     22.1     1.43    2618   100.0    61001   11399   0.796  ! Near Maximum !
IMR 4895                           108.0     23.6     1.53    2615    94.9    61001   12893   0.801  ! Near Maximum !
Ramshot Big Game                   108.2     25.2     1.63    2613    94.2    61001   12765   0.791  ! Near Maximum !
Accurate 2495                      105.7     22.6     1.47    2612    99.9    61001   12215   0.828  ! Near Maximum !
Hodgdon BL-C2                      102.9     24.6     1.59    2610    96.2    61001   12734   0.801  ! Near Maximum !
Norma 203B                         109.3     23.9     1.55    2604    94.8    61001   12715   0.802  ! Near Maximum !
Lovex D073.6                       105.8     23.9     1.55    2602    98.0    61001   12348   0.809  ! Near Maximum !
Accurate 2520                      103.4     23.9     1.55    2602    98.0    61001   12348   0.809  ! Near Maximum !
Raufoss RA11                       108.7     23.8     1.54    2600    94.1    61001   12695   0.802  ! Near Maximum !
Bofors RP11 ~approximation         108.7     23.8     1.54    2600    94.1    61001   12695   0.802  ! Near Maximum !
Alliant Reloder-15                 108.7     23.8     1.54    2600    94.1    61001   12695   0.802  ! Near Maximum !
Nitrochemie A/S 0300                92.4     20.8     1.35    2595   100.0    61001   11490   0.803  ! Near Maximum !
Hodgdon H4895                      104.7     22.9     1.49    2594    95.6    61001   12511   0.804  ! Near Maximum !
Ramshot Wild Boar                  102.8     24.1     1.56    2587    94.6    61001   12428   0.799  ! Near Maximum !
ADI AR 2206H                       105.0     23.0     1.49    2586    94.8    61001   12444   0.804  ! Near Maximum !
ADI AR 2219                         95.0     21.5     1.39    2586    99.3    61001   11761   0.797  ! Near Maximum !
Hodgdon H322                       101.1     21.5     1.39    2586    99.3    61001   11761   0.797  ! Near Maximum !
Hodgdon H335                        95.3     22.8     1.48    2585    98.6    61001   11992   0.800  ! Near Maximum !
Norma 202                          105.7     22.8     1.48    2584    98.7    61001   12002   0.805  ! Near Maximum !
PB Clermont PCL 507                101.8     23.3     1.51    2582    96.4    61001   12224   0.801  ! Near Maximum !
SNPE Vectan SP 10                   94.9     22.2     1.44    2582    98.6    61001   11965   0.804  ! Near Maximum !
PB Clermont PCL 508 (PCL223)        94.9     22.2     1.44    2581    98.6    61001   11949   0.804  ! Near Maximum !
Somchem S321                        99.9     23.5     1.52    2580    96.6    61001   12261   0.806  ! Near Maximum !
Vihtavuori N540                    108.0     23.9     1.55    2579    98.5    61001   12069   0.803  ! Near Maximum !
SNPE Vectan SP 9                   105.5     23.9     1.55    2579    94.7    61001   12295   0.800  ! Near Maximum !
IMR 4320                           110.0     23.7     1.53    2577    94.3    60676   12181   0.792  ! Near Maximum !
Lovex S062                         109.7     23.4     1.51    2576    96.4    61001   12174   0.809  ! Near Maximum !
Hodgdon H380                       109.6     24.5     1.59    2576    92.0    61001   12462   0.805  ! Near Maximum !
Vihtavuori N530                    100.7     22.2     1.44    2574    96.5    61001   12069   0.801  ! Near Maximum !
Norma 203 old                      110.0     24.3     1.58    2573    95.3    58396   12601   0.823  ! Near Maximum !
Bofors RP3                         110.0     24.3     1.58    2573    95.3    58396   12601   0.823  ! Near Maximum !
SF033 fl, russ. 5,45x39             95.5     21.4     1.38    2573   100.0    61001   10919   0.815  ! Near Maximum !
SNPE Vectan SP 11                  110.0     24.9     1.61    2570    93.5    57617   12670   0.812  ! Near Maximum !
ReloadSwiss RS 40                   98.7     22.0     1.43    2567    97.8    61001   11831   0.802  ! Near Maximum !
PB Clermont PCL 516                105.4     24.6     1.59    2566    92.0    61001   12259   0.799  ! Near Maximum !
IMR 8208 XBR                       103.0     22.5     1.46    2566    96.4    61001   11944   0.802  ! Near Maximum !
Somchem S341                       103.6     24.4     1.58    2565    94.5    61001   11994   0.799  ! Near Maximum !
Norma 201                          106.1     22.7     1.47    2564    96.4    61001   12064   0.814  ! Near Maximum !
Vihtavuori N140                    107.9     23.2     1.50    2563    98.9    61001   11563   0.802  ! Near Maximum !
Elcho TR140 - preliminary data     109.0     24.6     1.60    2562    92.2    61001   12164   0.802  ! Near Maximum !
Lovex D073.5                        98.7     23.2     1.50    2562    97.3    61001   11881   0.817  ! Near Maximum !
Accurate 2460                       98.4     23.2     1.50    2562    97.3    61001   11881   0.817  ! Near Maximum !
Alliant Reloder-10x                 98.5     20.3     1.32    2561   100.0    61001   11132   0.812  ! Near Maximum !
Accurate 4064                      110.0     23.6     1.53    2561    98.4    57099   12402   0.850  ! Near Maximum !
Rottweil R901                      104.2     21.7     1.40    2560    98.5    61001   11822   0.824  ! Near Maximum !
Rottweil R902                      108.1     22.8     1.48    2557    96.4    61001   11923   0.815  ! Near Maximum !
Alliant Reloder-12                 100.6     22.4     1.45    2555    99.3    61001   11401   0.802  ! Near Maximum !
ADI AR 2208                        110.0     23.4     1.51    2552    93.6    60587   11990   0.799  ! Near Maximum !
Lovex D073.4                        96.9     22.7     1.47    2551    97.2    61001   11665   0.813  ! Near Maximum !
SNPE Vectan SP 7                   103.3     24.2     1.57    2549    91.9    61001   12013   0.808  ! Near Maximum !
Accurate 2015                      101.3     21.2     1.37    2548   100.0    61001   11062   0.817  ! Near Maximum !
Accurate 2230                       97.7     23.2     1.50    2545    95.6    61001   11703   0.811  ! Near Maximum !
Norma 200                           94.6     20.3     1.31    2544   100.0    61001   10877   0.825  ! Near Maximum !
Hodgdon VARGET                     110.0     23.3     1.51    2543    93.5    59896   11945   0.804  ! Near Maximum !
ReloadSwiss RS 50                  108.8     24.8     1.61    2542    89.6    61001   12004   0.804  ! Near Maximum !
Ramshot TAC                        101.9     24.0     1.56    2541    91.2    61001   11971   0.804  ! Near Maximum !
ADI AR 2210                         95.5     21.6     1.40    2540    97.3    61001   11495   0.804  ! Near Maximum !
Ramshot X-Terminator                99.5     23.3     1.51    2540    94.6    61001   11748   0.806  ! Near Maximum !
Accurate 2200                       92.8     20.6     1.34    2534    98.1    61001   11261   0.802  ! Near Maximum !
Bofors RP2 NT ~approximation       103.8     22.5     1.46    2534    95.4    61001   11529   0.801  ! Near Maximum !
Alliant Reloder-17                 110.0     25.3     1.64    2534    92.1    53273   13136   0.836  ! Near Maximum !
Elcho 17                           110.0     25.3     1.64    2534    92.1    53273   13136   0.836  ! Near Maximum !
ADI BM2                             93.4     21.8     1.41    2532    97.3    61001   11390   0.805  ! Near Maximum !
Hodgdon Benchmark                  101.5     21.9     1.42    2531    97.1    61001   11393   0.805  ! Near Maximum !
IMR 4198                            97.6     19.2     1.24    2528   100.0    61001   10317   0.796  ! Near Maximum !
Bofors RP7 NT ~approximation       110.0     24.3     1.57    2528    88.6    60893   11721   0.792  ! Near Maximum !
Somchem S335                       105.2     22.5     1.46    2525    99.2    61001   11093   0.814  ! Near Maximum !
Vihtavuori N133                    107.2     21.5     1.39    2523    99.9    61001   10648   0.804  ! Near Maximum !
Lovex S060                         104.3     22.2     1.44    2522    95.0    61001   11412   0.804  ! Near Maximum !
ADI AR 2207                         93.0     19.0     1.23    2521   100.0    61001   10194   0.812  ! Near Maximum !
Accurate 1680                       85.1     19.4     1.26    2519    99.7    61001   10711   0.803  ! Near Maximum !
IMR 4064                           110.0     22.7     1.47    2517    93.4    58126   11742   0.818  ! Near Maximum !
ReloadSwiss RS 60                  110.0     25.3     1.64    2516    92.4    52016   13289   0.845
ADI AR 2206                        103.5     22.4     1.45    2515    95.5    61001   11282   0.803  ! Near Maximum !
Hodgdon H414                       110.0     25.5     1.65    2514    86.2    55022   12488   0.830  ! Near Maximum !
Winchester 760                     110.0     25.5     1.65    2514    86.2    55022   12488   0.830  ! Near Maximum !
Vihtavuori N130                    101.1     20.7     1.34    2514   100.0    61001   10479   0.810  ! Near Maximum !
Alliant Reloder-7                   92.2     19.5     1.27    2514   100.0    61001   10401   0.814  ! Near Maximum !
Bofors RP1 NT ~approximation        93.5     19.8     1.29    2513    99.0    61001   10742   0.797  ! Near Maximum !
IMR 4007 SSC                       110.0     24.4     1.58    2509    87.3    60141   11747   0.813  ! Near Maximum !
Hodgdon H4198                       94.1     19.3     1.25    2507    99.2    61001   10573   0.798  ! Near Maximum !
Kazan Sunar 308W                    96.2     20.6     1.34    2506   100.0    61001   10440   0.811  ! Near Maximum !
Somchem S355                       110.0     23.6     1.53    2503    93.9    54870   12108   0.847  ! Near Maximum !
Rottweil R903                      110.0     23.8     1.54    2499    93.8    53692   12174   0.856  ! Near Maximum !
Hodgdon H4227                       88.4     17.7     1.15    2481   100.0    61001    9592   0.802  ! Near Maximum !
Vihtavuori N120                     95.5     19.1     1.24    2481   100.0    61001    9523   0.813  ! Near Maximum !
Vihtavuori N125                     90.2     18.4     1.19    2477   100.0    61001    9518   0.813  ! Near Maximum !
IMR 4227                            87.9     17.6     1.14    2472   100.0    61001    9540   0.801  ! Near Maximum !
Accurate 2700                      109.8     25.1     1.63    2471    87.1    61001   11036   0.811  ! Near Maximum !
Bofors RP3 NT ~approximation       110.0     23.9     1.55    2463    89.0    55915   11384   0.827  ! Near Maximum !
Vihtavuori N135                    110.0     21.8     1.41    2449    98.9    51209   11152   0.872
Vihtavuori N550                    110.0     24.6     1.59    2449    88.7    49530   12294   0.874
PB Clermont PCL 511                110.0     25.6     1.66    2445    85.6    50826   12190   0.860
Lovex S053                          89.2     17.5     1.13    2444   100.0    61001    9124   0.814  ! Near Maximum !
Bofors RP7                         110.0     23.6     1.53    2415    85.3    53509   11268   0.858  ! Near Maximum !
Rottweil R907                      110.0     23.6     1.53    2415    85.3    53509   11268   0.858  ! Near Maximum !
Somchem S265                        86.3     17.3     1.12    2404   100.0    61001    8721   0.822  ! Near Maximum !
Lovex S065                         110.0     23.6     1.53    2385    87.4    50084   11274   0.887
ReloadSwiss RS 62                  110.0     25.2     1.63    2368    85.5    44582   12016   0.915
Norma URP                          110.0     23.8     1.54    2360    86.6    44796   11698   0.913
Bofors RP19 ~approximation         110.0     23.8     1.54    2359    86.6    44753   11690   0.914
Norma 204                          110.0     24.9     1.61    2353    79.6    48578   11156   0.881
Vihtavuori N150                    110.0     22.7     1.47    2347    93.1    46112   10959   0.910
Accurate 4350                      110.0     24.1     1.56    2346    86.2    43017   11800   0.935
Lovex S070                         110.0     23.8     1.54    2346    84.2    47175   11210   0.910
Ramshot Hunter                     110.0     24.9     1.61    2344    83.1    45192   11579   0.910
IMR 4350                           110.0     23.9     1.55    2330    82.5    47223   10831   0.896
Bofors RP4 NT ~approximation       110.0     24.4     1.58    2319    81.9    45395   11034   0.912
Somchem S365                       110.0     23.9     1.55    2288    88.3    39682   11728   0.964
Hodgdon H4350                      110.0     23.6     1.53    2278    81.0    44359   10528   0.923
Hodgdon Hybrid 100V                110.0     23.3     1.51    2271    87.5    41215   10883   0.949
ReloadSwiss RS 70                  110.0     25.6     1.66    2261    76.5    42909   11189   0.934
Bofors RP4 ~approximation          110.0     24.1     1.56    2258    77.1    43230   10583   0.931
Raufoss RA4                        110.0     24.1     1.56    2258    77.1    43230   10583   0.931
Rottweil R904                      110.0     23.7     1.54    2224    75.7    42692   10103   0.939
ADI AR 2209                        110.0     23.9     1.55    2223    75.2    41701   10412   0.946
Somchem S361                       110.0     25.6     1.66    2221    75.0    43938    9932   0.934
Alliant Reloder-19                 110.0     24.1     1.56    2207    75.3    39930   10466   0.967
IMR 4831                           110.0     23.1     1.49    2202    83.1    37065   10718   1.004
Winchester Supreme 780             110.0     25.4     1.65    2198    75.4    42012   10053   0.946
Bofors RP14 ~approximation         110.0     24.1     1.56    2182    74.7    39042   10253   0.979
Somchem S385                       110.0     24.3     1.58    2160    76.4    36982   10228   1.007
Hodgdon H4831 SC                   110.0     24.3     1.58    2140    70.5    39201    9635   0.978
Norma MRP                          110.0     25.1     1.63    2138    71.9    35758   10655   1.016
Alliant Reloder-26                 110.0     25.9     1.68    2136    73.6    35262   11075   1.025
IMR 7828 SSC                       110.0     24.7     1.60    2124    67.5    37890    9859   0.994
ADI AR 2213                        110.0     24.3     1.58    2111    67.7    37480    9667   0.999
Vihtavuori N560                    110.0     24.6     1.59    2093    66.4    34879    9957   1.029
Raufoss RA15                       110.0     24.3     1.58    2087    69.8    34093   10003   1.038
Alliant Reloder-22                 110.0     24.3     1.58    2087    69.8    34093   10003   1.038
Bofors RP5/NP ~approximation       110.0     24.3     1.58    2087    69.8    34093   10003   1.038
Accurate MAGPRO                    110.0     25.6     1.66    2041    62.8    33527    9550   1.054
Rottweil R905                      110.0     23.9     1.55    2036    66.6    33212    9290   1.051
Vihtavuori N160                    110.0     23.1     1.50    2035    70.3    34282    8824   1.041
Hodgdon H4831                      110.0     23.4     1.52    2033    67.3    34177    8947   1.039
Alliant Reloder-23                 110.0     23.6     1.53    2022    75.5    30443    9848   1.087
Accurate 3100                      110.0     24.1     1.56    2020    74.1    30374    9571   1.102
Bofors RP15                        110.0     23.8     1.54    2015    67.3    31254    9471   1.077
Winchester WXR                     110.0     23.8     1.54    2015    67.3    31254    9471   1.077
Ramshot Magnum                     110.0     26.2     1.70    2012    66.1    34655    9126   1.041
Bofors RP5 NT ~approximation       110.0     24.6     1.59    2011    63.0    34080    8699   1.044
Vihtavuori N165                    110.0     23.8     1.54    2007    70.8    32352    8927   1.065

Cartridge          : 5.56 mm NATO - 5.56 x 45 mm
Bullet             : .224, 77, Sierra HPBT MatchK 9377G
Useable Case Capaci: 23.746 grain H2O = 1.542 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 18.0 inch = 457.2 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 61000 psi, or 420 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

91 loads produced a Loading Ratio below user-defined minimum of 85%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
ReloadSwiss RS 52                  109.6     24.8     1.61    2783    98.3    61001   10158   0.898  ! Near Maximum !
IMR 3031                           109.5     22.4     1.45    2771   100.0    61001    9432   0.903  ! Near Maximum !
Hodgdon CFE223                     102.2     24.9     1.62    2760    96.9    61001   10075   0.900  ! Near Maximum !
Winchester 748                     100.4     23.6     1.53    2755    98.7    61001    9752   0.902  ! Near Maximum !
IMR 4895                           108.0     23.6     1.53    2755    96.7    61001   10104   0.910  ! Near Maximum !
Ramshot Big Game                   108.2     25.2     1.63    2751    96.2    61001   10008   0.900  ! Near Maximum !
Hodgdon BL-C2                      102.9     24.6     1.59    2748    97.8    61001    9958   0.909  ! Near Maximum !
Accurate 2495                      105.7     22.6     1.47    2743   100.0    61001    9299   0.937  ! Near Maximum !
Norma 203B                         109.3     23.9     1.55    2743    96.6    61001    9963   0.911  ! Near Maximum !
Alliant AR-Comp                    104.2     22.1     1.43    2741   100.0    61001    8680   0.904  ! Near Maximum !
Bofors RP11 TZ ~approximation      103.6     22.1     1.43    2741   100.0    61001    8680   0.904  ! Near Maximum !
Raufoss RA11                       108.7     23.8     1.54    2739    96.0    61001    9959   0.911  ! Near Maximum !
Bofors RP11 ~approximation         108.7     23.8     1.54    2739    96.0    61001    9959   0.911  ! Near Maximum !
Alliant Reloder-15                 108.7     23.8     1.54    2739    96.0    61001    9959   0.911  ! Near Maximum !
Accurate 2520                      103.4     23.9     1.55    2736    99.2    61001    9549   0.918  ! Near Maximum !
Lovex D073.6                       105.8     23.9     1.55    2736    99.2    61001    9549   0.918  ! Near Maximum !
Hodgdon H4895                      104.7     22.9     1.49    2731    97.2    61001    9788   0.913  ! Near Maximum !
Ramshot Wild Boar                  102.8     24.1     1.56    2724    96.5    61001    9748   0.908  ! Near Maximum !
ADI AR 2206H                       105.0     23.0     1.49    2723    96.6    61001    9753   0.914  ! Near Maximum !
Nitrochemie A/S 0300                92.4     20.8     1.35    2720   100.0    61001    8767   0.912  ! Near Maximum !
PB Clermont PCL 507                101.8     23.3     1.51    2717    97.9    61001    9545   0.911  ! Near Maximum !
Hodgdon H335                        95.3     22.8     1.48    2716    99.5    61001    9293   0.910  ! Near Maximum !
Norma 202                          105.7     22.8     1.48    2715    99.5    61001    9291   0.915  ! Near Maximum !
Somchem S321                        99.9     23.5     1.52    2715    98.1    61001    9578   0.916  ! Near Maximum !
Hodgdon H322                       101.1     21.5     1.39    2714    99.9    61001    9059   0.907  ! Near Maximum !
ADI AR 2219                         95.0     21.5     1.39    2714    99.9    61001    9059   0.907  ! Near Maximum !
SNPE Vectan SP 9                   105.5     23.9     1.55    2714    96.5    61001    9642   0.910  ! Near Maximum !
Hodgdon H380                       109.6     24.5     1.59    2713    94.2    61001    9817   0.915  ! Near Maximum !
SNPE Vectan SP 10                   94.9     22.2     1.44    2713    99.5    61001    9265   0.914  ! Near Maximum !
Norma 203 old                      110.0     24.3     1.58    2712    97.1    58396    9862   0.933  ! Near Maximum !
Bofors RP3                         110.0     24.3     1.58    2712    97.1    58396    9862   0.933  ! Near Maximum !
Vihtavuori N540                    108.0     23.9     1.55    2712    99.4    61001    9389   0.913  ! Near Maximum !
PB Clermont PCL 508 (PCL223)        94.9     22.2     1.44    2712    99.5    61001    9251   0.914  ! Near Maximum !
IMR 4320                           110.0     23.7     1.53    2711    96.1    60676    9552   0.902  ! Near Maximum !
SNPE Vectan SP 11                  110.0     24.9     1.61    2710    95.6    57617    9973   0.922  ! Near Maximum !
Lovex S062                         109.7     23.4     1.51    2710    97.9    61001    9490   0.920  ! Near Maximum !
Vihtavuori N530                    100.7     22.2     1.44    2707    98.0    61001    9422   0.911  ! Near Maximum !
PB Clermont PCL 516                105.4     24.6     1.59    2702    94.1    61001    9662   0.910  ! Near Maximum !
IMR 8208 XBR                       103.0     22.5     1.46    2698    97.8    61001    9318   0.912  ! Near Maximum !
Somchem S341                       103.6     24.4     1.58    2698    96.3    61001    9383   0.909  ! Near Maximum !
ReloadSwiss RS 40                   98.7     22.0     1.43    2698    98.9    61001    9195   0.913  ! Near Maximum !
Norma 201                          106.1     22.7     1.47    2697    97.9    61001    9415   0.925  ! Near Maximum !
Accurate 4064                      110.0     23.6     1.53    2697    99.5    57099    9575   0.961  ! Near Maximum !
Elcho TR140 - preliminary data     109.0     24.6     1.60    2697    94.3    61001    9566   0.913  ! Near Maximum !
SF033 fl, russ. 5,45x39             95.5     21.4     1.38    2693   100.0    61001    8323   0.926  ! Near Maximum !
Lovex D073.5                        98.7     23.2     1.50    2693    98.6    61001    9216   0.928  ! Near Maximum !
Accurate 2460                       98.4     23.2     1.50    2693    98.6    61001    9216   0.928  ! Near Maximum !
Vihtavuori N140                    107.9     23.2     1.50    2691    99.7    61001    8927   0.913  ! Near Maximum !
Rottweil R901                      104.2     21.7     1.40    2690    99.4    61001    9141   0.935  ! Near Maximum !
Rottweil R902                      108.1     22.8     1.48    2689    97.9    61001    9295   0.926  ! Near Maximum !
ADI AR 2208                        110.0     23.4     1.51    2686    95.5    60587    9434   0.911  ! Near Maximum !
Alliant Reloder-10x                 98.5     20.3     1.32    2683   100.0    61001    8510   0.923  ! Near Maximum !
SNPE Vectan SP 7                   103.3     24.2     1.57    2683    94.0    61001    9443   0.920  ! Near Maximum !
Alliant Reloder-12                 100.6     22.4     1.45    2681    99.9    61001    8795   0.913  ! Near Maximum !
Alliant Reloder-17                 110.0     25.3     1.64    2681    94.7    53273   10416   0.948  ! Near Maximum !
Elcho 17                           110.0     25.3     1.64    2681    94.7    53273   10416   0.948  ! Near Maximum !
Lovex D073.4                        96.9     22.7     1.47    2680    98.5    61001    9052   0.925  ! Near Maximum !
Hodgdon VARGET                     110.0     23.3     1.51    2676    95.4    59896    9404   0.915  ! Near Maximum !
ReloadSwiss RS 50                  108.8     24.8     1.61    2676    91.9    61001    9477   0.916  ! Near Maximum !
Accurate 2230                       97.7     23.2     1.50    2675    97.3    61001    9125   0.922  ! Near Maximum !
Ramshot TAC                        101.9     24.0     1.56    2675    93.4    61001    9446   0.916  ! Near Maximum !
Ramshot X-Terminator                99.5     23.3     1.51    2671    96.4    61001    9210   0.918  ! Near Maximum !
Accurate 2015                      101.3     21.2     1.37    2670   100.0    61001    8439   0.928  ! Near Maximum !
ADI AR 2210                         95.5     21.6     1.40    2668    98.5    61001    8953   0.916  ! Near Maximum !
ReloadSwiss RS 60                  110.0     25.3     1.64    2666    95.3    52016   10562   0.957
Norma 200                           94.6     20.3     1.31    2664   100.0    61001    8301   0.937  ! Near Maximum !
Bofors RP2 NT ~approximation       103.8     22.5     1.46    2663    97.0    61001    9021   0.913  ! Near Maximum !
Accurate 2200                       92.8     20.6     1.34    2660    99.1    61001    8737   0.915  ! Near Maximum !
Bofors RP7 NT ~approximation       110.0     24.3     1.57    2660    91.0    60893    9279   0.905  ! Near Maximum !
ADI BM2                             93.4     21.8     1.41    2659    98.5    61001    8870   0.917  ! Near Maximum !
Hodgdon Benchmark                  101.5     21.9     1.42    2659    98.4    61001    8877   0.917  ! Near Maximum !
Winchester 760                     110.0     25.5     1.65    2656    89.0    55022    9933   0.942  ! Near Maximum !
Hodgdon H414                       110.0     25.5     1.65    2656    89.0    55022    9933   0.942  ! Near Maximum !
Lovex S060                         104.3     22.2     1.44    2651    96.6    61001    8937   0.916  ! Near Maximum !
IMR 4064                           110.0     22.7     1.47    2649    95.4    58126    9223   0.931  ! Near Maximum !
Somchem S335                       105.2     22.5     1.46    2649    99.8    61001    8557   0.927  ! Near Maximum !
IMR 4198                            97.6     19.2     1.24    2644   100.0    61001    7886   0.909  ! Near Maximum !
Vihtavuori N133                    107.2     21.5     1.39    2642   100.0    61001    8137   0.917  ! Near Maximum !
ADI AR 2206                        103.5     22.4     1.45    2642    97.1    61001    8829   0.916  ! Near Maximum !
IMR 4007 SSC                       110.0     24.4     1.58    2642    89.7    60141    9307   0.926  ! Near Maximum !
Somchem S355                       110.0     23.6     1.53    2641    95.9    54870    9525   0.960  ! Near Maximum !
Accurate 1680                       85.1     19.4     1.26    2639   100.0    61001    8226   0.916  ! Near Maximum !
Rottweil R903                      110.0     23.8     1.54    2636    95.9    53692    9564   0.969  ! Near Maximum !
ADI AR 2207                         93.0     19.0     1.23    2635   100.0    61001    7810   0.925  ! Near Maximum !
Bofors RP1 NT ~approximation        93.5     19.8     1.29    2634    99.7    61001    8292   0.911  ! Near Maximum !
Vihtavuori N130                    101.1     20.7     1.34    2632   100.0    61001    8012   0.923  ! Near Maximum !
Alliant Reloder-7                   92.2     19.5     1.27    2630   100.0    61001    7956   0.927  ! Near Maximum !
Hodgdon H4198                       94.1     19.3     1.25    2626    99.8    61001    8140   0.912  ! Near Maximum !
Kazan Sunar 308W                    96.2     20.6     1.34    2624   100.0    61001    7985   0.925  ! Near Maximum !
Accurate 2700                      109.8     25.1     1.63    2598    89.4    61001    8717   0.926  ! Near Maximum !
Bofors RP3 NT ~approximation       110.0     23.9     1.55    2595    91.4    55915    9018   0.942  ! Near Maximum !
Vihtavuori N550                    110.0     24.6     1.59    2592    91.4    49530    9798   0.990
Hodgdon H4227                       88.4     17.7     1.15    2591   100.0    61001    7350   0.917  ! Near Maximum !
Vihtavuori N120                     95.5     19.1     1.24    2589   100.0    61001    7281   0.928  ! Near Maximum !
PB Clermont PCL 511                110.0     25.6     1.66    2587    88.6    50826    9748   0.976
Vihtavuori N125                     90.2     18.4     1.19    2586   100.0    61001    7282   0.928  ! Near Maximum !
IMR 4227                            87.9     17.6     1.14    2581   100.0    61001    7311   0.916  ! Near Maximum !
Vihtavuori N135                    110.0     21.8     1.41    2578    99.7    51209    8601   0.988
Lovex S053                          89.2     17.5     1.13    2550   100.0    61001    6996   0.930  ! Near Maximum !
Bofors RP7                         110.0     23.6     1.53    2547    87.9    53509    8967   0.976  ! Near Maximum !
Rottweil R907                      110.0     23.6     1.53    2547    87.9    53509    8967   0.976  ! Near Maximum !
Lovex S065                         110.0     23.6     1.53    2519    90.0    50084    8967   1.005
ReloadSwiss RS 62                  110.0     25.2     1.63    2512    88.7    44582    9624   1.035
Somchem S265                        86.3     17.3     1.12    2506   100.0    61001    6688   0.941  ! Near Maximum !
Norma URP                          110.0     23.8     1.54    2501    89.6    44796    9359   1.033
Bofors RP19 ~approximation         110.0     23.8     1.54    2500    89.5    44753    9352   1.034
Accurate 4350                      110.0     24.1     1.56    2489    89.3    43017    9430   1.055
Norma 204                          110.0     24.9     1.61    2488    82.7    48578    8964   1.001
Ramshot Hunter                     110.0     24.9     1.61    2485    86.2    45192    9311   1.031
Lovex S070                         110.0     23.8     1.54    2482    87.0    47175    8957   1.030
Vihtavuori N150                    110.0     22.7     1.47    2479    95.3    46112    8665   1.031
IMR 4350                           110.0     23.9     1.55    2462    85.3    47223    8664   1.017
Bofors RP4 NT ~approximation       110.0     24.4     1.58    2454    85.0    45395    8851   1.034
Somchem S365                       110.0     23.9     1.55    2433    91.7    39682    9411   1.088
Hodgdon H4350                      110.0     23.6     1.53    2409    83.9    44359    8444   1.047
Hodgdon Hybrid 100V                110.0     23.3     1.51    2407    90.5    41215    8695   1.073
ReloadSwiss RS 70                  110.0     25.6     1.66    2403    80.4    42909    9141   1.059
Bofors RP4 ~approximation          110.0     24.1     1.56    2391    80.3    43230    8543   1.056
Raufoss RA4                        110.0     24.1     1.56    2391    80.3    43230    8543   1.056
ADI AR 2209                        110.0     23.9     1.55    2356    78.6    41701    8445   1.074
Rottweil R904                      110.0     23.7     1.54    2354    78.8    42692    8143   1.067
Somchem S361                       110.0     25.6     1.66    2348    78.0    43938    7994   1.061
Alliant Reloder-19                 110.0     24.1     1.56    2342    78.7    39930    8492   1.096
IMR 4831                           110.0     23.1     1.49    2340    86.4    37065    8633   1.132
Winchester Supreme 780             110.0     25.4     1.65    2329    78.7    42012    8140   1.075
Bofors RP14 ~approximation         110.0     24.1     1.56    2316    78.1    39042    8326   1.108
Somchem S385                       110.0     24.3     1.58    2294    79.8    36982    8282   1.138
Alliant Reloder-26                 110.0     25.9     1.68    2284    78.4    35262    9186   1.156
Norma MRP                          110.0     25.1     1.63    2280    76.1    35758    8774   1.148
Hodgdon H4831 SC                   110.0     24.3     1.58    2268    73.8    39201    7833   1.111
IMR 7828 SSC                       110.0     24.7     1.60    2256    71.3    37890    8092   1.127
ADI AR 2213                        110.0     24.3     1.58    2242    71.4    37480    7935   1.133
Vihtavuori N560                    110.0     24.6     1.59    2228    70.2    34879    8191   1.164
Raufoss RA15                       110.0     24.3     1.58    2224    73.6    34093    8220   1.173
Alliant Reloder-22                 110.0     24.3     1.58    2224    73.6    34093    8220   1.173
Bofors RP5/NP ~approximation       110.0     24.3     1.58    2224    73.6    34093    8220   1.173
Accurate MAGPRO                    110.0     25.6     1.66    2174    66.5    33527    7876   1.192
Rottweil R905                      110.0     23.9     1.55    2166    70.2    33212    7613   1.189

 

[Dwh7271]

I ran the HP not the tipped ones. If you want others, just shout.
I'm sure you already have this but the 14.5 nodes are 4-.747, 5-.802, 6-.869
The 18s are 4-.835, 5-.924, 6-.989, 7-1.077

 

[longrangehunter]

Thanks Dewey for the QL info, very much appreciated! The Federal FC 12 223 brass I won seems to have a more constant weight then the L.C./W.C. 5.56 NATO brass I have. I got them from a S.O. sniper whom I shot with last year at the Steel Safari Match. Unbeknownst to me he had put them up on the prize table, and I ended up walking away with them a very happy person along with a few other gifts, one of which I gave to him. Only to find out he was the doner, great gift from a great guy.

Looks like these would fit the bill, have close to 100% burn rate and good speed:

Norma 201
RL-10X
Accurate 2015
VV N130
RL-7
Accurate 2460

Of those I only have the VV N130, better then nothing I suppose but know one around here sells that stuff at the LGS, which means HAZM shipping if it does work? But the powder I have is roughly 10-15 years old, but stored correctly... if you believe in that?

Thanks Scott, and Dewey

 

[Dwh7271]

Here you go.

Cartridge          : 5.56 mm NATO - 5.56 x 45 mm
Bullet             : .224, 77, Sierra TMK #7177
Useable Case Capaci: 23.086 grain H2O = 1.499 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Vihtavuori N130

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0   92    18.27   2398     983   45161   7407     99.6    1.057
-09.0   93    18.47   2421    1002   46553   7461     99.8    1.043
-08.0   94    18.68   2444    1021   47986   7512     99.9    1.028
-07.0   95    18.88   2466    1040   49462   7561     99.9    1.015
-06.0   96    19.08   2489    1059   50982   7606    100.0    1.001
-05.0   97    19.29   2511    1078   52547   7648    100.0    0.988
-04.0   98    19.49   2534    1097   54159   7687    100.0    0.974  ! Near Maximum !
-03.0   99    19.69   2556    1117   55820   7725    100.0    0.962  ! Near Maximum !
-02.0  100    19.89   2578    1136   57531   7763    100.0    0.949  ! Near Maximum !
-01.0  101    20.10   2600    1156   59294   7800    100.0    0.937  ! Near Maximum !
+00.0  102    20.30   2622    1175   61111   7837    100.0    0.924  ! Near Maximum !
+01.0  103    20.50   2643    1195   62984   7873    100.0    0.912  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    20.71   2665    1214   64915   7908    100.0    0.901  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    20.91   2687    1234   66907   7943    100.0    0.889  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    21.11   2708    1254   68961   7978    100.0    0.878  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    21.32   2729    1274   71080   8012    100.0    0.867  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    102    20.30   2663    1212   66311   7690    100.0    0.895  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    102    20.30   2571    1130   55921   8004     99.9    0.959  ! Near Maximum !

 

[longrangehunter]

Dewey,

I noticed a variance in the data above, I have the 77 SMK HPBT #9377, no G after it, and not the #7717 Tipped bullet you listed above. I assume I can just use the previous data which shows a max of 20.7. Let me know if that is the case, thanks.

 

[CMBTshooter]

That FC brass may have crimped primer pockets. Some of the Federal ammo from other government agency contracts have crimped primer pockets despite them not being specifically for the military.

 

[Dwh7271]

Kevin,
There does seem tobe a difference.
Here you go.

Cartridge          : 5.56 mm NATO - 5.56 x 45 mm
Bullet             : .224, 77, Sierra HPBT MatchK 9377G
Useable Case Capaci: 23.746 grain H2O = 1.542 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Vihtavuori N130

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0   91    18.60   2408     991   45139   7572     99.7    1.056
-09.0   92    18.81   2431    1010   46518   7627     99.8    1.042
-08.0   93    19.02   2453    1029   47938   7678     99.9    1.028
-07.0   94    19.22   2476    1048   49400   7726    100.0    1.014
-06.0   95    19.43   2498    1067   50904   7772    100.0    1.000
-05.0   96    19.64   2521    1086   52452   7814    100.0    0.987
-04.0   97    19.84   2543    1106   54046   7854    100.0    0.974  ! Near Maximum !
-03.0   98    20.05   2565    1125   55687   7894    100.0    0.961  ! Near Maximum !
-02.0   99    20.26   2587    1144   57377   7934    100.0    0.948  ! Near Maximum !
-01.0  100    20.46   2609    1164   59117   7972    100.0    0.936  ! Near Maximum !
+00.0  101    20.67   2631    1183   60910   8011    100.0    0.924  ! Near Maximum !
+01.0  102    20.88   2652    1203   62757   8049    100.0    0.912  !DANGEROUS LOAD-DO NOT USE!
+02.0  103    21.08   2674    1222   64660   8086    100.0    0.901  !DANGEROUS LOAD-DO NOT USE!
+03.0  104    21.29   2695    1242   66622   8123    100.0    0.889  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    21.50   2717    1262   68643   8159    100.0    0.878  !DANGEROUS LOAD-DO NOT USE!
+05.0  106    21.70   2738    1282   70728   8194    100.0    0.867  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    101    20.67   2671    1220   66042   7865    100.0    0.894  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    101    20.67   2580    1138   55782   8182     99.9    0.959  ! Near Maximum !

 

[longrangehunter]

I started w/ 1 each @ 20.3, 20.4, 20.5, 20.6 was too hot! Noticed powder leakage around the primer pocket @ 20.6 and yet case head expansion was all the same with each case, and some had no difference if on the large size. All were at .3750" after firing, and .3735-3740 sized brass. I went back to 20.3 for the 5th shot, shots 2-4 and even the last failed to keep the bolt in the open position, but did extract the spent cartridges fine.

Bolt carrier was lubed w/Rand CLP, which I've used before with zero issues, and a whole lot more burt powder between cleaning. The gun was cleaned prior to using, not sure if it's the powder, the H-buffer, or the lack of attention on DD? Never seen that with my Noveske N4 Afghan.

Not the best groups, the first round was 4 mils high off the backer board and the rest were all vertical an inch apart from each other. I just may abandon N130 after I test fire (5) rounds with the same powder charge, I don't like what I already see but the gun is still unproven to know for sure.

I did not pull out my chronograph as the gun wasn't sighted in, and I didn't want to take it out! Unlike a bolt gun there is no way to look down the barrel to make sure a bullet won't strike it? So I have no idea what speed they were going?

I'd like to know if it's the powder preventing the bolt carrier from remaining open on a empty magazine or the gun? I've used N130 before with the 60 Sierra HP in a Bushmaster Varmint rifle with no issues, so I'm not sure what the problem is with this one?

 

[Dwh7271]

Should be another one around 19.25 unless thats too slow

 

[longrangehunter]

Should be another one around 19.25 unless thats too slow

Thanks, I was just looking up Node 6, and 7 on their web site. I'm thinking this powder is just too fast and I should move on!

I need to find something that works with node 6 rather then 5. I looked back at my other load and it wasn't near the max, which would have been Node 6, but Node 7 w/the M4 14.5" barrel. I think I need to do the same with this gun, and look for something in Node 6 or 7.

Those last ones, 20.3-20.6 I was reaching too far for Node 5 for the 18" barrel, too hot, and not my style!

I'll just go up the ladder to a slower powder and see what I can find that will work with Node 6 at .9886 Ms or 1.0774 Ms at Node 7, which would be too slow, but Node 6 should work out.

 

[longrangehunter]

Dewey, I have lots of RL-15, Nosler listed it as the most accurate with their 77/80 grain bullet. Would you please run me the QL for that powder and the 77 SMK HPBT #9377.

Thanks in advance.

 

[Dwh7271]

I'd think around 22.5 might be good

Cartridge          : 5.56 mm NATO - 5.56 x 45 mm
Bullet             : .224, 77, Sierra HPBT MatchK 9377G
Useable Case Capaci: 23.746 grain H2O = 1.542 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Alliant Reloder-15

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0   94    20.49   2340     936   37855   8444     88.6    1.133
-09.0   95    20.72   2367     958   39121   8564     89.2    1.116
-08.0   96    20.95   2394     980   40424   8681     89.8    1.099
-07.0   97    21.18   2422    1003   41767   8797     90.4    1.082
-06.0   98    21.40   2449    1026   43153   8911     91.0    1.066
-05.0   99    21.63   2477    1049   44589   9023     91.5    1.050
-04.0  100    21.86   2504    1072   46074   9132     92.1    1.034
-03.0  101    22.09   2532    1096   47612   9240     92.6    1.019
-02.0  102    22.31   2559    1120   49205   9345     93.1    1.003
-01.0  103    22.54   2587    1144   50855   9447     93.6    0.988
+00.0  104    22.77   2615    1169   52564   9547     94.1    0.974
+01.0  105    23.00   2642    1194   54335   9645     94.5    0.959  ! Near Maximum !
+02.0  106    23.23   2670    1219   56171   9739     95.0    0.945  ! Near Maximum !
+03.0  107    23.45   2698    1245   58075   9831     95.4    0.931  ! Near Maximum !
+04.0  108    23.68   2726    1270   60049   9919     95.8    0.917  ! Near Maximum !
+05.0  109    23.91   2754    1296   62096  10004     96.2    0.904  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    104    22.77   2693    1240   57890   9679     96.8    0.934  ! Near Maximum !
Data for burning rate decreased by 5% relative to nominal value:
-Ba    104    22.77   2528    1092   47371   9306     90.4    1.019

 

[longrangehunter]

Thanks Dewey! It's pretty chilly here today, 21 degrees, but zero wind, which is more the norm. I'll have to bring in the powder and slowly warm it up since it's in a shipping container. Slow boat to china before I get to test them, but I'll let you know when I'm done.

I'm hoping the bolt carrier will cure the issue of not remaining in the open position on an empty magazine?

 

[Dwh7271]

Anytime!

 

[longrangehunter]

Dewey,

I got around to checking the H2O capacity for this brass. It's head stamped, FC 12 223 Rem, the year date tells me it's military brass, so here's what I measured.

I took two measurements, 1st with a well rounded water hump 31.5 grains, and the other just flush to slightly concave to the top of the neck, 31.0 grains.

So I'd either say the average of the two @ 31.25.

The VV N130 @ 20.6 grains was way too hot, odd since the MAST Brass had a capacity of 30.68 grains vs. these FC 12 223 Rem Brass at 31.5 when both were done having well rounded H2O tops.

I'd use the average of the two IMO of 31.25, only because it seems to be a better average method?

How does that change the Data? I'd assume a slight increase in powder to have the same effect.

 

[Dwh7271]

Here you go. Your case capacity run in a 223 with RL15.
There's a decent one around .926 I think? 25.4 gr.

Cartridge          : .223 Rem.
Bullet             : .224, 77, Sierra HPBT MatchK 9377G
Useable Case Capaci: 26.503 grain H2O = 1.721 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Alliant Reloder-15

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0   94    22.86   2491    1061   42765   9610     92.2    1.078
-09.0   95    23.11   2520    1086   44192   9733     92.8    1.062
-08.0   96    23.37   2548    1110   45669   9853     93.3    1.046
-07.0   97    23.62   2577    1135   47195   9971     93.8    1.030
-06.0   98    23.88   2605    1161   48774  10086     94.3    1.014
-05.0   99    24.13   2634    1186   50408  10197     94.7    0.999
-04.0  100    24.38   2662    1212   52098  10306     95.2    0.984
-03.0  101    24.64   2691    1238   53847  10412     95.6    0.969  ! Near Maximum !
-02.0  102    24.89   2719    1264   55658  10514     96.0    0.954  ! Near Maximum !
-01.0  103    25.15   2748    1291   57533  10613     96.4    0.940  ! Near Maximum !
+00.0  104    25.40   2776    1318   59474  10708     96.8    0.926  ! Near Maximum !
+01.0  105    25.65   2805    1345   61485  10800     97.2    0.913  ! Near Maximum !
+02.0  106    25.91   2833    1373   63568  10888     97.5    0.899  !DANGEROUS LOAD-DO NOT USE!
+03.0  107    26.16   2862    1400   65727  10972     97.8    0.886  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    26.42   2890    1428   67965  11052     98.1    0.873  !DANGEROUS LOAD-DO NOT USE!
+05.0  109    26.67   2919    1457   70286  11128     98.4    0.860  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    104    25.40   2850    1389   65284  10743     98.8    0.889  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    104    25.40   2691    1239   53773  10544     93.9    0.968  ! Near Maximum !

 

[longrangehunter]

Thanks Dewey,

I went out to test 22.5 RL-15 prior to seeing your post.........The Nolser and Sierra manual both show 24.0 as a max with each of their 77 gr. bullets. I did have proper extraction and the bolt carrier was functioning fine this time leaving the bolt open on an empty magazine. Group was nothing to be excited about, but I'll post a pic for those interested.

I'll need to get out the chronograph ASAP, the weather isn't great today and I was being lazy. I'll have to test the 25.4 load when I get the chance, it may not be today though?

Thanks again,

 

[Dwh7271]

Might want to work up to that one based on the previous loads. :grin: Looks like if you can get there it should work for you.
If you do get the chrony out (and don't shoot it like I did) we can dial it in for you.