looking for a good load for 375 ruger

[fwood]

I need load data for a 375 Ruger with 300 gr Nosler partitions, and IMR 4350 if any of you have a pet load that would be great. Mike can you run the data? Thanks in advance.


Fwood

 

[SJB358]

Here you go. Hopefully this gives you a place to start.

Cartridge : .375 Ruger
Bullet : .375, 300, Nosler PART SP 44845
Useable Case Capaci: 83.149 grain H2O = 5.399 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 23.0 inch = 584.2 mm
Powder : IMR 4350

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 82 62.24 2065 2841 32430 7181 91.0 1.588
-18.0 84 63.80 2114 2976 34567 7395 92.1 1.548
-16.0 86 65.35 2162 3115 36844 7602 93.1 1.509
-14.0 88 66.91 2211 3257 39268 7802 94.1 1.465
-12.0 90 68.46 2260 3401 41847 7994 95.0 1.423
-10.0 92 70.02 2308 3549 44568 8176 95.8 1.382
-08.0 94 71.58 2356 3699 47456 8350 96.6 1.343
-06.0 96 73.13 2405 3852 50531 8513 97.3 1.306
-04.0 98 74.69 2453 4007 53810 8665 97.9 1.270 ! Near Maximum !
-02.0 100 76.24 2500 4165 57307 8806 98.4 1.235 ! Near Maximum !
+00.0 102 77.80 2548 4325 61039 8934 98.9 1.201 ! Near Maximum !
+02.0 104 79.36 2596 4488 65027 9050 99.3 1.168 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 80.91 2643 4653 69291 9153 99.6 1.137 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 82.47 2690 4820 73855 9241 99.8 1.107 !DANGEROUS LOAD-DO NOT USE!
+08.0 110 84.02 2737 4989 78747 9315 99.9 1.077 !DANGEROUS LOAD-DO NOT USE!
+10.0 112 85.58 2783 5160 83996 9374 100.0 1.049 !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 102 77.80 2649 4674 71877 8678 100.0 1.123 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 77.80 2409 3866 50408 8781 94.0 1.303

 

[fwood]

Thanks for the help it is appreciated.

Fwood

 

[SJB358]

No problem. Post up pictures.. Love seeing those 375 Rugers. They seem like 22-250's on steroids most days...

 

[fwood]

it will be a while but I am getting there.

Fwood