quickload for 7x57 AI including reloder 17

[clearwater]

Dr Mike kindly sent me data on 7x57 ai awhile back.

I am having some promising results in other cartridges with RX 17, I am looking for some
quickload data for this round with rx 17 and 140 grain Partitions. Rem 722 short action
limiting oal to 2.8".

 

[DrMike]

Cartridge : 7 x 57 mm Ack. Imp.
Bullet : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 57.032 grain H2O = 3.703 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17

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 71 38.96 2271 1604 27743 8660 91.1 1.474
-18.0 72 39.93 2325 1681 29439 8941 92.3 1.441
-16.0 74 40.91 2379 1760 31232 9214 93.5 1.417
-14.0 76 41.88 2433 1841 33129 9477 94.5 1.382
-12.0 78 42.86 2488 1924 35138 9730 95.5 1.347
-10.0 79 43.83 2542 2008 37264 9972 96.3 1.313
-08.0 81 44.80 2596 2094 39518 10201 97.1 1.277
-06.0 83 45.78 2649 2182 41904 10416 97.8 1.241
-04.0 85 46.75 2703 2271 44434 10618 98.4 1.207 ! Near Maximum !
-02.0 87 47.73 2757 2362 47117 10803 98.9 1.175 ! Near Maximum !
+00.0 88 48.70 2810 2454 49963 10973 99.3 1.143 ! Near Maximum !
+02.0 90 49.67 2863 2547 52986 11126 99.6 1.113 !DANGEROUS LOAD-DO NOT USE!
+04.0 92 50.65 2915 2642 56196 11261 99.9 1.084 !DANGEROUS LOAD-DO NOT USE!
+06.0 94 51.62 2967 2737 59606 11377 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+08.0 95 52.60 3019 2833 63236 11475 100.0 1.028 !DANGEROUS LOAD-DO NOT USE!
+10.0 97 53.57 3070 2930 67098 11566 100.0 1.001 !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 88 48.70 2932 2672 59417 10638 100.0 1.062 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 88 48.70 2639 2165 41401 10730 94.2 1.247