257 Roberts +P Quick load request

[AK7AN]

When someone has the time and is able to run a QL for 257 Roberts + P.. Winchester brass, CCI 200 primer, and Nosler 85 gr BT bullets.
I would greatly appreciate it.
Thanks
Ed

 

[DrMike]

Cartridge          : .257 Roberts +P+ (not SAAMI)
Bullet             : .257, 85, Nosler BalTip 43004
Useable Case Capaci: 50.171 grain H2O = 3.258 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 mm
Barrel Length      : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 57000 psi, or 393 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 !

3 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 60                  101.3     49.1     3.18    3441    99.8    57000   12481   0.957  ! Near Maximum !
Elcho 17                           100.4     48.7     3.16    3420    99.3    57000   12330   0.961  ! Near Maximum !
Alliant Reloder-17                 100.4     48.7     3.16    3420    99.3    57000   12330   0.961  ! Near Maximum !
Alliant Reloder-26                 110.0     54.7     3.54    3415    96.9    54649   13383   0.982  ! Near Maximum !
Somchem S365                       108.0     49.7     3.22    3405    99.9    57000   11895   0.969  ! Near Maximum !
Alliant Reloder-16                 107.7     48.5     3.14    3397    98.7    57000   12139   0.968  ! Near Maximum !
ReloadSwiss RS 70                  107.1     52.8     3.42    3381    94.8    57000   12678   0.961  ! Near Maximum !
ReloadSwiss RS 62                  104.3     50.5     3.27    3377    97.5    57000   12191   0.977  ! Near Maximum !
PB Clermont PCL 511                101.7     50.1     3.25    3357    96.0    57000   12092   0.970  ! Near Maximum !
Ramshot Hunter                     105.1     50.2     3.25    3355    96.0    57000   12072   0.970  ! Near Maximum !
PB Clermont PCL 518                105.9     50.6     3.28    3355    95.5    57000   12107   0.969  ! Near Maximum !
Norma MRP                          110.0     53.1     3.44    3353    93.5    53916   12877   0.990  ! Near Maximum !
Norma URP                          104.8     47.9     3.11    3353    97.7    57000   11865   0.974  ! Near Maximum !
Bofors RP19 ~approximation         104.8     47.9     3.11    3352    97.7    57000   11861   0.974  ! Near Maximum !
Accurate 4350                      104.4     48.3     3.13    3351    97.8    57000   11919   0.989  ! Near Maximum !
Hodgdon H414                        99.3     48.6     3.15    3350    95.0    57000   12032   0.972  ! Near Maximum !
Winchester 760                      99.3     48.6     3.15    3350    95.0    57000   12032   0.972  ! Near Maximum !
Vihtavuori N550                    101.6     48.0     3.11    3347    97.5    57000   11947   0.980  ! Near Maximum !
IMR 4831                           110.0     48.7     3.16    3333    97.9    57000   11653   0.982  ! Near Maximum !
Alliant Reloder-19                 109.5     50.6     3.28    3332    92.6    57000   12006   0.967  ! Near Maximum !
Hodgdon Hybrid 100V                107.7     48.2     3.12    3329    99.2    57000   11175   0.970  ! Near Maximum !
ADI AR 2209                        108.4     49.9     3.23    3322    92.2    57000   11868   0.962  ! Near Maximum !
Bofors RP14 ~approximation         110.0     50.9     3.30    3317    92.5    56672   11882   0.971  ! Near Maximum !
Norma 203 old                       97.0     45.4     2.94    3314    99.4    57000   11281   0.994  ! Near Maximum !
Bofors RP3                          97.0     45.4     2.94    3314    99.4    57000   11281   0.994  ! Near Maximum !
IMR 7828 SSC                       110.0     52.3     3.39    3310    89.3    55404   12233   0.974  ! Near Maximum !
Rottweil R903                       99.2     45.4     2.94    3307    99.2    57000   11190   0.994  ! Near Maximum !
Norma 204                          103.7     49.5     3.21    3306    92.3    57000   11663   0.968  ! Near Maximum !
Raufoss RA4                        107.0     49.5     3.21    3306    92.3    57000   11663   0.968  ! Near Maximum !
Bofors RP4 ~approximation          107.0     49.5     3.21    3306    92.3    57000   11663   0.968  ! Near Maximum !
Somchem S385                       110.0     51.4     3.33    3302    94.0    57000   11665   0.984  ! Near Maximum !
Hodgdon H380                        96.2     45.5     2.95    3298    97.3    57000   11367   0.986  ! Near Maximum !
Somchem S355                        99.0     44.8     2.90    3298    99.1    57000   11128   0.989  ! Near Maximum !
Bofors RP4 NT ~approximation       104.6     49.1     3.18    3295    94.5    57000   11498   0.978  ! Near Maximum !
Lovex D073.6                        92.0     43.8     2.84    3293   100.0    57000   10702   0.995  ! Near Maximum !
Accurate 4064                       96.8     43.8     2.84    3293   100.0    57000   10700   1.014  ! Near Maximum !
Lovex S070                         103.7     47.4     3.07    3283    95.2    57000   11394   0.989  ! Near Maximum !
Accurate 2495                       91.2     41.3     2.67    3279   100.0    57000   10313   1.017  ! Near Maximum !
Hodgdon H4831 SC                   110.0     51.4     3.33    3271    89.2    56786   11453   0.969  ! Near Maximum !
Winchester Supreme 780             107.5     52.4     3.40    3269    92.2    57000   11297   0.970  ! Near Maximum !
SNPE Vectan SP 7                    90.7     45.0     2.92    3268    97.2    57000   10981   0.988  ! Near Maximum !
ADI AR 2213                        110.0     51.4     3.33    3267    88.6    54143   11946   0.985  ! Near Maximum !
Lovex S065                         102.3     46.3     3.00    3266    96.4    57000   11105   0.989  ! Near Maximum !
Rottweil R904                      107.6     49.1     3.18    3265    90.9    57000   11239   0.971  ! Near Maximum !
Vihtavuori N560                    110.0     52.0     3.37    3264    87.7    51480   12358   1.012  ! Near Maximum !
Bofors RP7                         100.8     45.8     2.97    3253    94.1    57000   11066   0.985  ! Near Maximum !
Rottweil R907                      100.8     45.8     2.97    3253    94.1    57000   11066   0.985  ! Near Maximum !
IMR 4007 SSC                        97.7     45.8     2.97    3252    94.1    57000   11057   0.985  ! Near Maximum !
Rottweil R901                       90.9     39.9     2.59    3250   100.0    57000   10264   1.001  ! Near Maximum !
Raufoss RA15                       110.0     51.4     3.33    3246    90.5    50606   12160   1.021  ! Near Maximum !
Alliant Reloder-22                 110.0     51.4     3.33    3246    90.5    50606   12160   1.021  ! Near Maximum !
Bofors RP5/NP ~approximation       110.0     51.4     3.33    3246    90.5    50606   12160   1.021  ! Near Maximum !
Accurate MAGPRO                    110.0     54.1     3.50    3222    85.1    50471   12137   1.026  ! Near Maximum !
Ramshot Magnum                     110.0     55.4     3.59    3217    91.0    52334   11688   1.005  ! Near Maximum !
Somchem S361                       106.2     52.3     3.39    3214    89.7    57000   10859   0.984  ! Near Maximum !
IMR 4955 Enduron                   110.0     49.5     3.21    3211    89.4    55096   11020   0.988  ! Near Maximum !
Accurate 3100                      110.0     50.9     3.30    3162    93.9    49402   11213   1.058  ! Near Maximum !

 

[AK7AN]

Thanks so much Dr Mike.. Interesting that IMR4064 is not listed, that is what I have been working with. Worked up to what Nosler shows as a max load, 43.5 gr. Velocity runs around 3350 in my Ruger M77 MKII. Don't see any signs of pressure and shoots MOA at 100 yds.. Was just curious as to what QL would show for other powders..
Thanks again
Ed

 

[DrMike]

Cartridge          : .257 Roberts +P+ (not SAAMI)
Bullet             : .257, 85, Nosler BalTip 43004
Useable Case Capaci: 50.171 grain H2O = 3.258 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4064

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   78    34.00   2634    1309   30578   8468     89.3    1.295
-18.0   80    34.85   2696    1372   32494   8733     90.5    1.263
-16.0   82    35.70   2758    1436   34524   8991     91.7    1.231
-14.0   84    36.55   2820    1501   36672   9242     92.7    1.200
-12.0   86    37.40   2882    1567   38947   9484     93.7    1.166
-10.0   88    38.25   2943    1635   41355   9717     94.7    1.133
-08.0   89    39.10   3005    1704   43905   9941     95.5    1.102
-06.0   91    39.95   3066    1775   46605  10153     96.3    1.071
-04.0   93    40.80   3127    1846   49464  10354     97.1    1.042  ! Near Maximum !
-02.0   95    41.65   3188    1919   52494  10543     97.7    1.014  ! Near Maximum !
+00.0   97    42.50   3249    1992   55704  10718     98.3    0.987  ! Near Maximum !
+02.0   99    43.35   3309    2067   59109  10880     98.8    0.960  !DANGEROUS LOAD-DO NOT USE!
+04.0  101    44.20   3369    2142   62720  11028     99.2    0.935  !DANGEROUS LOAD-DO NOT USE!
+06.0  103    45.05   3429    2219   66553  11160     99.5    0.911  !DANGEROUS LOAD-DO NOT USE!
+08.0  105    45.90   3488    2296   70625  11277     99.7    0.887  !DANGEROUS LOAD-DO NOT USE!
+10.0  107    46.75   3547    2374   74953  11377     99.9    0.864  !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     97    42.50   3387    2166   65152  10556    100.0    0.920  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     97    42.50   3064    1772   46411  10399     92.8    1.073

Case fill is less than the parameters I set, which is why this particular powder didn't show. Clearly, it will work just fine for you.

 

[SJB358]

That looks like a zinger of a load! Dang...

 

[DrMike]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

 

[truck driver]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

Yep it sure does. My favorite varmint load was with 75gr Hornady hollow points and they stopped making them for something else that doesn't work as well with a fancy name (Varmagedon) whoopy. :?

 

[SJB358]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

For sure Mike. I am 1/3 of your age and can barely keep up with it :lol:

 

[AK7AN]

Hornady does have the 75 gr Vmax.. I bought 2 boxes of these from Cabelas on sale a while back, but haven't had a chance to mess with them yet.. 3600 FPS, make a fun varmit round or just blowing up water bottles at 6-800 yds... My wife and I love doing that.. :lol:
And yes Dr Mike.. time does get away fast..
Take care
Ed

 

[truck driver]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

For sure Mike. I am 1/3 of your age and can barely keep up with it :lol:

OOOoooh good one Scotty. :grin:

 

[preacher]

Time slipping away? Somewhere along the way I lost my butt! Now I have a long back, like a bullfrog! I'm constantly pulling up my pants! What happened? :evil:

 

[DrMike]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

For sure Mike. I am 1/3 of your age and can barely keep up with it :lol:

I'm 117! :shock: I'm better preserved than I thought. :mrgreen:

 

[SJB358]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

For sure Mike. I am 1/3 of your age and can barely keep up with it :lol:

I'm 117! :shock: I'm better preserved than I thought. :mrgreen:

Ha!! See, you're doing much better than you thought buddy.

 

[DrMike]

I need to get my 257 Bob out and do some work with it. After developing an initial load, I put it away and have never worked with it again. Time has a way of slipping away.

For sure Mike. I am 1/3 of your age and can barely keep up with it :lol:

I'm 117! :shock: I'm better preserved than I thought. :mrgreen:

Ha!! See, you're doing much better than you thought buddy.

It's all that black coffee. Does it every time. Allows me to shoot better, as well. All I have to do is ensure that as the scope jitters that I pull the trigger at the same jiggle each time. :lol: