Quick load please 7x57

salmonchaser · Oct 23, 2025

I know I’ve seen it but can’t find it.
7x57
150 AB
Rl-17
Federal 210 m
Cartridge overall length 3.209
Thanks in advance.
Ruger #1
24 inch Barrel

BruceP · Oct 23, 2025

You did not say what the firearm was or barrel length so this one is for the SAAMI spec's with a 22" barrel.

Cartridge : 7 x 57 mm Mauser (SAAMI)
Bullet : .284, 150, Nosler AccuBond LR 58734
Useable Case Capaci: 51.331 grain H2O = 3.333 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17 *T

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 74 36.80 2158 1550 26057 8324 91.4 1.573
-18.0 76 37.72 2212 1629 27701 8600 92.7 1.533
-16.0 78 38.64 2266 1710 29448 8867 93.9 1.493
-14.0 80 39.56 2320 1793 31309 9122 95.0 1.455
-12.0 82 40.48 2375 1878 33287 9365 96.0 1.418
-10.0 83 41.40 2429 1965 35394 9593 96.9 1.382
-08.0 85 42.32 2483 2054 37637 9807 97.7 1.345
-06.0 87 43.24 2537 2145 40029 10004 98.3 1.306
-04.0 89 44.16 2591 2237 42578 10184 98.9 1.269
-02.0 91 45.08 2645 2330 45300 10346 99.3 1.233 ! Near Maximum !
+00.0 93 46.00 2699 2425 48204 10488 99.7 1.198 ! Near Maximum !
+02.0 95 46.92 2752 2522 51309 10611 99.9 1.164 !DANGEROUS LOAD-DO NOT USE!
+04.0 96 47.84 2804 2619 54628 10712 100.0 1.131 !DANGEROUS LOAD-DO NOT USE!
+06.0 98 48.76 2856 2718 58185 10796 100.0 1.100 !DANGEROUS LOAD-DO NOT USE!
+08.0 100 49.68 2908 2817 61995 10876 100.0 1.069 !DANGEROUS LOAD-DO NOT USE!
+10.0 102 50.60 2960 2917 66079 10953 100.0 1.040 !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 93 46.00 2824 2657 58646 10067 100.0 1.105 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 46.00 2517 2110 39186 10333 94.5 1.317

salmonchaser · Friday at 4:48 AM

Thanks Bruce. The rifle is a Ruger #1 with a 24 inch barrel.

PJGunner · Friday at 2:39 PM

Of the ones shown the following is close to results I get in three rifles with no apparent pressure related problems..

+04.0 96 47.84 2804 2619 54628 10712 100.0 1.131 !DANGEROUS LOAD-DO NOT USE!

My load is as follows.
48.5 RL17/48.5 gr./2847 FPS Brass is Winchester, Winchester WLR primer. Bullet, 150 gr. Nosler Partition. Primer pockets still tight after five reloads.
Rifles used, original test, Winchester M70 Featherweight 22" barrel. Other tests, Commercial FN Mauser 23" barrel and Ruger #1A 22" barrel.
Groups, M70 final test .55". Mauser .40". Ruger #1 1.5" Got to work on that one. At no time did either of the bolt actions shoot groups grater than one in with most less.

DrMike · Friday at 3:34 PM

I don't have the 150 AB in my data base. I do have the 150 grain ABLR in the data base, which gives the following projection.

Code:

Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 150, Nosler Accubond LR 58734
Useable Case Capaci: 53.547 grain H2O = 3.477 cm³
Cartridge O.A.L. L6: 3.209 inch = 81.51 mm
Barrel Length      : 27.0 inch = 685.8 mm
Powder             : Alliant Reloder-17 *T

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   83    43.02   2609    2267   36653   7966     99.0    1.526
-09.0   84    43.50   2636    2315   37802   8034     99.2    1.504
-08.0   85    43.98   2663    2363   38988   8097     99.4    1.483
-07.0   86    44.45   2691    2411   40214   8157     99.6    1.462
-06.0   87    44.93   2718    2460   41479   8213     99.7    1.442
-05.0   88    45.41   2744    2509   42784   8265     99.9    1.421
-04.0   89    45.89   2771    2558   44132   8313     99.9    1.401  ! Near Maximum !
-03.0   90    46.37   2798    2607   45526   8357    100.0    1.382  ! Near Maximum !
-02.0   90    46.84   2824    2656   46966   8396    100.0    1.363  ! Near Maximum !
-01.0   91    47.32   2850    2706   48453   8433    100.0    1.344  ! Near Maximum !
+00.0   92    47.80   2877    2756   49990   8469    100.0    1.325  ! Near Maximum !
+01.0   93    48.28   2903    2806   51580   8504    100.0    1.308  !DANGEROUS LOAD-DO NOT USE!
+02.0   94    48.76   2928    2856   53222   8539    100.0    1.290  !DANGEROUS LOAD-DO NOT USE!
+03.0   95    49.23   2954    2907   54922   8573    100.0    1.272  !DANGEROUS LOAD-DO NOT USE!
+04.0   96    49.71   2980    2957   56678   8607    100.0    1.255  !DANGEROUS LOAD-DO NOT USE!
+05.0   97    50.19   3005    3008   58496   8640    100.0    1.238  !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     92    47.80   2938    2875   55259   8272    100.0    1.274  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     92    47.80   2800    2611   45100   8650     99.6    1.384  ! Near Maximum !

The 150 grain AB would likely require less powder and generate somewhat higher velocity as result of a a longer bearing surface.