Load Specifications
Load data in caliber .375 Ruger with .374 | 250gr | Rhino Solid Shank bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and Alliant Reloder-17.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 54,172 psi | 87% | 2572 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,144 psi | 90% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,550 psi | 89% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,317 psi | 88% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,811 psi | 90% | 2618 fps | 96% |
| Accurate 4064 | <<locked>> | 94% | 55,376 psi | 89% | 2667 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,256 psi | 83% | 2680 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 53,142 psi | 86% | 2654 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 54,114 psi | 87% | 2648 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,738 psi | 90% | 2657 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,057 psi | 90% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,954 psi | 87% | 2710 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,591 psi | 85% | 2753 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,722 psi | 87% | 2671 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,693 psi | 86% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,375 psi | 88% | 2687 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,937 psi | 80% | 2684 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,288 psi | 87% | 2772 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,389 psi | 57% | 2425 fps | 96.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,840 psi | 90% | 2552 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 52,837 psi | 85% | 2661 fps | 99% |
| Bofors RP3 | <<locked>> | 94% | 54,317 psi | 88% | 2684 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,737 psi | 88% | 2644 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,215 psi | 87% | 2598 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,868 psi | 88% | 2684 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,011 psi | 85% | 2720 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 82% | 52,823 psi | 85% | 2612 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,925 psi | 87% | 2631 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,535 psi | 89% | 2694 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,563 psi | 88% | 2726 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 53,650 psi | 86% | 2664 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,137 psi | 74% | 2572 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,721 psi | 85% | 2690 fps | 99.9% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 56,115 psi | 90% | 2762 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 56% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,056 psi | 89% | 2667 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 53,171 psi | 86% | 2654 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,737 psi | 87% | 2635 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,969 psi | 87% | 2612 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 53,882 psi | 87% | 2539 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,330 psi | 86% | 2628 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,704 psi | 78% | 2625 fps | 98.4% |
| IMR 4895 | <<locked>> | 92% | 55,782 psi | 90% | 2717 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 55,738 psi | 90% | 2657 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,028 psi | 90% | 2644 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,086 psi | 90% | 2677 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,200 psi | 86% | 2589 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 53,214 psi | 86% | 2635 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,680 psi | 90% | 2667 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,113 psi | 86% | 2648 fps | 96.7% |
| Norma 201 | <<locked>> | 90% | 55,201 psi | 89% | 2651 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,709 psi | 90% | 2654 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,548 psi | 86% | 2674 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 50,647 psi | 82% | 2671 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 92% | 54,128 psi | 87% | 2700 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2661 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 52,678 psi | 85% | 2618 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,680 psi | 90% | 2690 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,272 psi | 86% | 2612 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 57% | 1667 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,303 psi | 89% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,057 psi | 90% | 2674 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,636 psi | 88% | 2749 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,099 psi | 87% | 2779 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,763 psi | 82% | 2697 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,343 psi | 83% | 2720 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 86% | 52,997 psi | 85% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,782 psi | 90% | 2648 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,940 psi | 87% | 2671 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 54,737 psi | 88% | 2644 fps | 96.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,680 psi | 90% | 2667 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,086 psi | 90% | 2677 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,214 psi | 86% | 2635 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,113 psi | 86% | 2648 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,027 psi | 89% | 2615 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,941 psi | 90% | 2730 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,694 psi | 88% | 2595 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,549 psi | 88% | 2648 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,042 psi | 89% | 2674 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,635 psi | 86% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,606 psi | 86% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,808 psi | 85% | 2575 fps | 96.3% |
| Somchem S321 | <<locked>> | 84% | 53,403 psi | 86% | 2641 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,127 psi | 86% | 2556 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,940 psi | 87% | 2641 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 54,549 psi | 88% | 2671 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,121 psi | 73% | 2625 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 53,577 psi | 86% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,737 psi | 87% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,100 psi | 89% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,808 psi | 85% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,028 psi | 90% | 2654 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,374 psi | 86% | 2671 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 52,663 psi | 85% | 2608 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 54,375 psi | 88% | 2628 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,257 psi | 84% | 2674 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,956 psi | 61% | 2497 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2654 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 55,883 psi | 90% | 2700 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2733 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,897 psi | 88% | 2680 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 44,817 psi | 72% | 2441 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,066 psi | 79% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,405 psi | 60% | 2365 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,237 psi | 71% | 2500 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 52,199 psi | 84% | 2569 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 35,346 psi | 57% | 2352 fps | 99.5% |
| Accurate 4350 | <<locked>> | 90% | 36,056 psi | 58% | 2418 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 41,176 psi | 66% | 2454 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,201 psi | 57% | 2316 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,236 psi | 70% | 2467 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,830 psi | 69% | 2464 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,314 psi | 81% | 2654 fps | 99.6% |
| Alliant Power Pro 2000-MR | 68.8 gr | 80% | 37,376 psi | 60% | 2464 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,447 psi | 55% | 2333 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,560 psi | 81% | 2533 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,014 psi | 60% | 2388 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,666 psi | 59% | 2428 fps | 95.1% |
| Alliant Reloder-17 | 71.1 gr | 84% | 34,011 psi | 55% | 2395 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,431 psi | 54% | 2379 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,417 psi | 84% | 2513 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,364 psi | 65% | 2454 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 33,808 psi | 54% | 2329 fps | 96.8% |
| Bofors RP7 | <<locked>> | 96% | 51,416 psi | 83% | 2595 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,295 psi | 73% | 2464 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,872 psi | 67% | 2487 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,977 psi | 74% | 2612 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 49,516 psi | 80% | 2566 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,459 psi | 81% | 2585 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,798 psi | 64% | 2434 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 96% | 47,776 psi | 77% | 2621 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 41,539 psi | 67% | 2467 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,517 psi | 51% | 2283 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,478 psi | 60% | 2431 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 98% | 52,199 psi | 84% | 2703 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,947 psi | 42% | 1453 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,943 psi | 64% | 2421 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 40,915 psi | 66% | 2470 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,912 psi | 59% | 2349 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,718 psi | 77% | 2513 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,865 psi | 82% | 2500 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,183 psi | 81% | 2579 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 37,275 psi | 60% | 2425 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,898 psi | 61% | 2418 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 43,236 psi | 70% | 2467 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 48,762 psi | 79% | 2546 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 40,001 psi | 64% | 2438 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,684 psi | 67% | 2402 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 36,637 psi | 59% | 2352 fps | 97.9% |
| Lovex S065 | <<locked>> | 92% | 43,598 psi | 70% | 2477 fps | 95.7% |
| Lovex S070 | <<locked>> | 96% | 46,804 psi | 75% | 2549 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,393 psi | 65% | 2415 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 40,640 psi | 65% | 2428 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,419 psi | 59% | 2379 fps | 96.6% |
| Norma URP | <<locked>> | 92% | 39,015 psi | 63% | 2470 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,013 psi | 58% | 2388 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 43,729 psi | 70% | 2556 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,279 psi | 70% | 2464 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,598 psi | 69% | 2487 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,862 psi | 75% | 2510 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 42% | 1493 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,544 psi | 78% | 2549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,209 psi | 74% | 2523 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,537 psi | 62% | 2480 fps | 96.6% |
| ReloadSwiss RS 60 | 67.7 gr | 80% | 31,676 psi | 51% | 2349 fps | 97.6% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,595 psi | 62% | 2487 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,959 psi | 68% | 2549 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 44,295 psi | 71% | 2464 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,450 psi | 62% | 2369 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 31,807 psi | 51% | 2280 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 96% | 51,416 psi | 83% | 2595 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,598 psi | 70% | 2477 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,001 psi | 64% | 2438 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,637 psi | 59% | 2352 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 96% | 46,804 psi | 75% | 2549 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,445 psi | 83% | 2566 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,011 psi | 53% | 2326 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,242 psi | 83% | 2552 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,307 psi | 67% | 2438 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,885 psi | 64% | 2428 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,887 psi | 67% | 2382 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,621 psi | 56% | 2254 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,414 psi | 80% | 2526 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 46,775 psi | 75% | 2543 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,466 psi | 67% | 2382 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,162 psi | 66% | 2441 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 32,822 psi | 53% | 2287 fps | 95.8% |
| Somchem S365 | <<locked>> | 86% | 28,761 psi | 46% | 2267 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 47,384 psi | 76% | 2444 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,105 psi | 68% | 2379 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,594 psi | 61% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,363 psi | 62% | 2365 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 31,154 psi | 50% | 2231 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 90% | 38,348 psi | 62% | 2421 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 43,221 psi | 70% | 2464 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 37,086 psi | 60% | 2356 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 37,681 psi | 61% | 2425 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 35,520 psi | 57% | 2444 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,821 psi | 51% | 2254 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 42,685 psi | 69% | 2503 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 47,964 psi | 77% | 2628 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,175 psi | 63% | 2428 fps | 97.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 112 powders for .375 Ruger loaded with the .374 | 250gr | Rhino Solid Shank. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,779 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (428 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.374" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .375 Ruger with the .374 | 250gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.