Staball in 7mm Rem Mag?

Joec7651

Handloader
Apr 7, 2019
546
220
I’m contemplating trying Staball 6.5 in one of my 7mm RM’s with 140gr Partitions. I haven’t made up my mind yet though. Just because IMR 4831 is SUCH a sweet load with 140’s. Really nice velocity for what would be considered a faster powder in 7mm RM, and accuracy that makes me smile every time.

Wow, that sounds like I’m trying to talk myself out of it. LOL

Anyway, Staball has a hair slower burn rate than Hybrid 100V, right between 4350 and IMR4831. 100V is number 128 and Staball is 129 on the chart. If I decide to, the starting load for 100V is where I’ll start and see where it goes with the Magnetospeed from there. It’s too fast for anything heavier in my opinion. I think it would work in anything 100V accommodates. It yields better velocities than 100V according to load data for all other cartridges it’s been tested in. I’m on the fence.
 

DrMike

Ballistician
Nov 8, 2006
34,989
1,373
StaBall will work.

Code:
Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 76.075 grain H2O = 4.939 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Winchester 6,5 StaBall *T*C

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   82    61.74   2803    2443   44017  10480    100.0    1.309
-09.0   83    62.43   2830    2490   45434  10544    100.0    1.290
-08.0   84    63.11   2858    2538   46893  10608    100.0    1.272
-07.0   85    63.80   2885    2587   48405  10670    100.0    1.254
-06.0   85    64.48   2911    2635   49959  10732    100.0    1.236
-05.0   86    65.17   2938    2683   51555  10793    100.0    1.218
-04.0   87    65.86   2965    2732   53195  10854    100.0    1.201  ! Near Maximum !
-03.0   88    66.54   2991    2781   54884  10914    100.0    1.184  ! Near Maximum !
-02.0   89    67.23   3017    2830   56626  10973    100.0    1.168  ! Near Maximum !
-01.0   90    67.91   3043    2879   58421  11031    100.0    1.152  ! Near Maximum !
+00.0   91    68.60   3069    2929   60273  11089    100.0    1.136  ! Near Maximum !
+01.0   92    69.29   3095    2979   62182  11146    100.0    1.120  !DANGEROUS LOAD-DO NOT USE!
+02.0   93    69.97   3121    3029   64152  11202    100.0    1.105  !DANGEROUS LOAD-DO NOT USE!
+03.0   94    70.66   3147    3079   66184  11257    100.0    1.090  !DANGEROUS LOAD-DO NOT USE!
+04.0   95    71.34   3173    3129   68280  11311    100.0    1.075  !DANGEROUS LOAD-DO NOT USE!
+05.0   95    72.03   3198    3180   70444  11365    100.0    1.061  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     91    68.60   3159    3102   71053  10796    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     91    68.60   2935    2678   49496  11481     99.8    1.234

If velocity is your goal, there are a variety of other powders that will give you greater velocity.

Code:
Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 76.075 grain H2O = 4.939 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 60250 psi, or 415 MPa
or a maximum loading ratio or filling of 112 %
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 !

23 loads produced a Loading Ratio below user-defined minimum of 90%. 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 76 *C               105.5     79.7     5.16    3318   100.0    60250   15014   1.119  ! Near Maximum !
Vihtavuori N570 *C                 109.1     80.6     5.23    3294    94.9    60250   15784   1.125  ! Near Maximum !
ReloadSwiss RS 80 *C               108.2     82.3     5.33    3277    97.6    60250   15272   1.132  ! Near Maximum !
Alliant Reloder-33 *C              110.7     84.2     5.46    3276    95.3    60250   15566   1.126  ! Near Maximum !
ADI AR 2218                        112.0     83.7     5.42    3265    94.3    59658   15906   1.116  ! Near Maximum !
Alliant Reloder-26 *C               97.0     73.2     4.74    3261   100.0    60250   13950   1.141  ! Near Maximum !
Hodgdon Retumbo                    112.0     79.0     5.12    3252   100.0    58767   14318   1.132  ! Near Maximum !
ADI AR 2225                        112.0     79.0     5.12    3252   100.0    58767   14318   1.132  ! Near Maximum !
Alliant Reloder-25 *C              105.9     73.8     4.78    3245   100.0    60250   13582   1.125  ! Near Maximum !
Norma MRP 2 *C                     108.1     75.8     4.91    3241    98.8    60250   14476   1.138  ! Near Maximum !
Bofors RP30                        108.1     75.8     4.91    3241    98.8    60250   14476   1.138  ! Near Maximum !
Norma MRP *C                        98.0     71.7     4.65    3240    99.8    60250   14102   1.135  ! Near Maximum !
PB Clermont PCL 517                102.7     76.9     4.98    3239    98.8    60250   14219   1.122  ! Near Maximum !
SNPE Vectan SP 12                  102.6     76.8     4.98    3238    98.9    60250   14195   1.122  ! Near Maximum !
Vihtavuori N560 *C                  99.8     71.5     4.63    3236    98.0    60250   14423   1.129  ! Near Maximum !
IMR 7828 SSC                        98.6     71.1     4.60    3229    98.4    60250   14015   1.118  ! Near Maximum !
IMR 7828                           104.3     71.1     4.60    3229    98.4    60250   14015   1.118  ! Near Maximum !
Accurate MAGPRO                    100.0     74.6     4.83    3224    96.7    60250   14486   1.136  ! Near Maximum !
ReloadSwiss RS 70 *C                91.7     68.5     4.44    3217   100.0    60250   13149   1.123  ! Near Maximum !
ADI AR 2213                         99.6     70.6     4.58    3215    98.3    60250   13870   1.115  ! Near Maximum !
Alliant Reloder-22 *C              100.0     70.9     4.59    3212    99.2    60250   13888   1.134  ! Near Maximum !
Raufoss RA15 *C                    100.0     70.9     4.59    3212    99.2    60250   13888   1.134  ! Near Maximum !
Bofors RP5/NP ~approximation       100.0     70.9     4.59    3212    99.2    60250   13888   1.134  ! Near Maximum !
Vihtavuori N565 *C                 104.4     75.2     4.87    3212    98.2    60250   14264   1.149  ! Near Maximum !
Bofors RP15                        102.7     71.2     4.62    3210    99.1    60250   13900   1.135  ! Near Maximum !
Winchester WXR                     102.7     71.2     4.62    3210    99.1    60250   13900   1.135  ! Near Maximum !
ADI AP 2214                        103.5     75.4     4.88    3209    98.6    60250   13717   1.114  ! Near Maximum !
Hodgdon H1000 *T                   108.9     75.5     4.89    3206    98.6    60250   13676   1.114  ! Near Maximum !
ADI AR 2217                        108.9     75.5     4.89    3206    98.6    60250   13676   1.114  ! Near Maximum !
Ramshot Magnum                     100.0     76.4     4.95    3194    99.6    60250   13319   1.129  ! Near Maximum !
Bofors RL16 TZ *C *T                92.6     63.2     4.10    3186   100.0    60250   12506   1.122  ! Near Maximum !
Alliant Reloder-16 *C *T            92.6     63.2     4.10    3186   100.0    60250   12506   1.122  ! Near Maximum !
Accurate LRT                       112.0     83.5     5.41    3181    88.1    58933   14699   1.131  ! Near Maximum !
Rottweil R905                      101.3     70.5     4.57    3180    97.9    60250   13560   1.133  ! Near Maximum !
Bofors RP5 NT *C ~approximation    103.2     73.8     4.78    3177    96.5    60250   13636   1.118  ! Near Maximum !
ADI AR 2209                         96.5     67.3     4.36    3175    99.1    60250   13189   1.121  ! Near Maximum !
Alliant Reloder-23 *C *T           101.6     69.7     4.52    3175   100.0    60250   12441   1.141  ! Near Maximum !
Bofors RP36 ZT *C *T               101.6     69.7     4.52    3175   100.0    60250   12441   1.141  ! Near Maximum !
Alliant Reloder-19 *C               97.0     68.0     4.41    3171    99.1    60250   13244   1.129  ! Near Maximum !
Vihtavuori N555 *C*T                98.5     67.7     4.39    3168   100.0    60250   12656   1.160  ! Near Maximum !
PB Clermont PCL 518                 93.3     67.6     4.38    3167    99.9    60250   12929   1.135  ! Near Maximum !
Bofors RP14 ~approximation          97.7     68.5     4.44    3164    99.1    60250   13150   1.129  ! Near Maximum !
Ramshot Hunter                      92.6     67.0     4.34    3163   100.0    60250   12822   1.136  ! Near Maximum !
ReloadSwiss RS 62                   91.1     66.9     4.34    3162   100.0    60250   12599   1.149  ! Near Maximum !
Vihtavuori 24N41 *C                110.9     82.8     5.37    3156    88.4    60250   13967   1.122  ! Near Maximum !
Norma 217 *C                       112.0     77.3     5.01    3154    99.2    52371   14556   1.210  ! Near Maximum !
Bofors RP4 ~approximation           95.1     66.7     4.32    3149    99.0    60250   12926   1.128  ! Near Maximum !
Raufoss RA4                         95.1     66.7     4.32    3149    99.0    60250   12926   1.128  ! Near Maximum !
Norma 204 *C                        92.1     66.7     4.32    3149    99.0    60250   12926   1.128  ! Near Maximum !
Hodgdon H4831 *T                   102.2     69.7     4.51    3147    97.6    60250   13071   1.126  ! Near Maximum !
Hodgdon H4831 SC *T                 98.3     69.7     4.51    3147    97.6    60250   13071   1.126  ! Near Maximum !
Somchem S365                        93.9     65.5     4.25    3146   100.0    60250   11928   1.148  ! Near Maximum !
Norma URP *C                        92.1     63.9     4.14    3143   100.0    60250   12291   1.141  ! Near Maximum !
Bofors RP19 ~approximation          92.2     63.9     4.14    3142   100.0    60250   12288   1.141  ! Near Maximum !
Hodgdon H870                       112.0     81.1     5.26    3139    95.0    52907   14851   1.198  ! Near Maximum !
Accurate 4350                       91.3     64.0     4.15    3137   100.0    60250   12275   1.159  ! Near Maximum !
Somchem S385                        97.1     68.9     4.46    3132    99.6    60250   12677   1.149  ! Near Maximum !
Bofors RP4 NT *C ~approximation     92.8     66.0     4.28    3124    99.7    60250   12462   1.140  ! Near Maximum !
IMR 4831                            96.7     64.9     4.21    3123   100.0    60250   12034   1.150  ! Near Maximum !
IMR 8133 Enduron *C*T              112.0     76.8     4.98    3123    97.3    52221   14414   1.209  ! Near Maximum !
Winchester Supreme 780              95.8     70.8     4.59    3123    99.0    60250   12600   1.135  ! Near Maximum !
Vihtavuori N170 *C                 111.7     77.5     5.02    3122    93.3    60250   13372   1.148  ! Near Maximum !
Rottweil R904                       95.9     66.3     4.30    3122    98.3    60250   12626   1.128  ! Near Maximum !
Vihtavuori N165 *C                 102.3     71.0     4.60    3117    99.4    60250   12392   1.139  ! Near Maximum !
Accurate 3100                      100.2     70.2     4.55    3116   100.0    60250   12325   1.165  ! Near Maximum !
Lovex S071                         105.9     70.2     4.55    3116   100.0    60250   12325   1.165  ! Near Maximum !
IMR 4955 Enduron *C*T               99.5     67.9     4.40    3112    97.8    60250   12654   1.127  ! Near Maximum !
Alliant Reloder-50 *C              112.0     84.9     5.50    3112    92.1    51312   15235   1.234
Lovex S070                          92.0     63.8     4.14    3109    99.8    60250   12255   1.147  ! Near Maximum !
Shooters World SW4350               92.0     63.8     4.14    3109    99.8    60250   12255   1.147  ! Near Maximum !
Vihtavuori N160 *C                 102.4     68.9     4.46    3103    98.2    60250   12393   1.132  ! Near Maximum !
Hodgdon Hybrid 100V                 94.6     64.2     4.16    3099   100.0    60250   11368   1.141  ! Near Maximum !
Rottweil R907                       90.1     62.0     4.02    3094    99.6    60250   12090   1.138  ! Near Maximum !
Bofors RP7                          90.1     62.0     4.02    3094    99.6    60250   12090   1.138  ! Near Maximum !
Lovex D100                         108.3     81.8     5.30    3089    89.4    60250   12969   1.137  ! Near Maximum !
Shooters World BMG                 108.3     81.8     5.30    3089    89.4    60250   12969   1.137  ! Near Maximum !
Lovex S065                          91.0     62.4     4.05    3087   100.0    60250   11795   1.145  ! Near Maximum !
Shooters World Long Rifle           91.0     62.4     4.05    3087   100.0    60250   11795   1.145  ! Near Maximum !
Somchem S361                        95.0     70.9     4.60    3086    97.6    60250   12359   1.140  ! Near Maximum !
IMR 7977 Enduron *C*T              103.9     72.1     4.67    3046    91.0    60250   12167   1.130  ! Near Maximum !
Bofors 12,7mmRA NC1214 Lot20115087 112.0     83.1     5.38    3038    83.9    53135   14148   1.239  ! Near Maximum
 

Joec7651

Handloader
Apr 7, 2019
546
220
Thanks DrMike I appreciate it. I’m not looking for just velocity. Curiosity mostly, but would take a nice surprise as far as a load goes if it happened to work out that way.

Looking at the Quickload output, is it just me, or does the max charge weight look to be on the heavy side. Maybe it’s due to the powder being so new, but a 68.6 grain charge weight looks more like an IMR 7828 load. I would think it would be roughly in line with the H 100V charge weights, possibly 1-2 grains more. I’m not questioning you, but it seems like a pretty heavy charge weight in relation to where it ranks on the burn rate chart. What do you think? I could be wrong and it’s dead on.
 

DrMike

Ballistician
Nov 8, 2006
34,989
1,373
Code:
Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 76.075 grain H2O = 4.939 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon Hybrid 100V

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   85    57.60   2825    2481   44036  10771    100.0    1.318
-09.0   86    58.24   2852    2529   45416  10835    100.0    1.299
-08.0   87    58.88   2880    2578   46836  10896    100.0    1.281
-07.0   88    59.52   2907    2627   48296  10956    100.0    1.263
-06.0   89    60.16   2934    2676   49799  11015    100.0    1.245
-05.0   90    60.80   2961    2725   51346  11073    100.0    1.227
-04.0   91    61.44   2988    2775   52937  11131    100.0    1.210  ! Near Maximum !
-03.0   92    62.08   3014    2824   54575  11187    100.0    1.193  ! Near Maximum !
-02.0   92    62.72   3040    2874   56260  11244    100.0    1.177  ! Near Maximum !
-01.0   93    63.36   3067    2923   57995  11299    100.0    1.161  ! Near Maximum !
+00.0   94    64.00   3093    2973   59781  11354    100.0    1.145  ! Near Maximum !
+01.0   95    64.64   3119    3024   61619  11408    100.0    1.130  !DANGEROUS LOAD-DO NOT USE!
+02.0   96    65.28   3145    3074   63511  11461    100.0    1.115  !DANGEROUS LOAD-DO NOT USE!
+03.0   97    65.92   3170    3124   65460  11514    100.0    1.100  !DANGEROUS LOAD-DO NOT USE!
+04.0   98    66.56   3196    3175   67467  11566    100.0    1.085  !DANGEROUS LOAD-DO NOT USE!
+05.0   99    67.20   3221    3226   69534  11617    100.0    1.071  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     94    64.00   3187    3157   70739  10997    100.0    1.067  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    64.00   2949    2703   48765  11804     99.6    1.250

The data seems pretty much in line with what I would have expected.
 

Joec7651

Handloader
Apr 7, 2019
546
220
Thank you for checking it. I appreciate you taking the time to pull the Quickload data.
 

mjcmichigan

Handloader
Dec 26, 2016
2,263
21
I love STAball 6.5, seems to work well in many cartridges.
I’ve used it mostly in smaller calibers.. and will try middle when I can find some more...

Agree on the point about avoiding heavy for caliber bullets...
I didn’t realize is slotted between 4350 and 4831..


Sent from my iPad using Tapatalk
 

JD338

Range Officer
Staff member
Nov 4, 2004
21,721
986
I've had pretty good luck using RL22 with 140 gr and 160 gr bullets in the 7mm Rem Mag.

JD338
 

Joec7651

Handloader
Apr 7, 2019
546
220
JD338":29x8jfky said:
I've had pretty good luck using RL22 with 140 gr and 160 gr bullets in the 7mm Rem Mag.

JD338
As have I. It’s tough to beat RL-22 in a 7mm RM.

I’m really just thinking out loud...........I actually have 6 powders that give me great performance from 139 grains to 175 in my 7mm mags. I have no need to work up another. It would only serve to muddy the water more than it already is, and burn through primers and powder.
 

desertcj

Handloader
Sep 27, 2010
764
1
Only powder my 7 mag has ever had down the current barrel is H1000 and in all likelyhood that won't change. 140gr-180gr.
 

Joec7651

Handloader
Apr 7, 2019
546
220
desertcj":iickmaxl said:
Only powder my 7 mag has ever had down the current barrel is H1000 and in all likelyhood that won't change. 140gr-180gr.
I have roughly 300 rounds loaded for my 7mm RM’s from 140 to 175 grains. 140 to 160’s for my 24” 1:9 rifle are loaded with RL-23, the 175 grain ELD-X loads for my 26” 1:8 rifle run a moderate charge of RL-25 at 3007 fps average. IMR 4831 has been exceptionally accurate as well with everything up to and including 162 grain bullets with velocities about 100 fps less than RL-22 and 23.
 

Joec7651

Handloader
Apr 7, 2019
546
220
Curiosity got the best of me, so I emailed Hodgdon. I had my doubts about it and they confirmed it. With it being a ball powder and not extruded, the burn rate ensures you can’t get load densities hi enough to achieve consistent ignition in the big case. It gives best performance with cartridges that allow load densities of 93% and up. Great information and as always a quick response from H.
 
Last edited:
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