Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:270 gr
Bullet Diameter:0.376"
Bullet Length:<<locked>>
Caliber:.375 Ruger load data
Case Length (l3):2.572"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:99 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:23"
Max. allowed Pressure:62,076 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 Ruger with .376 | 270gr | Peregrine Bushmaster (VRG-3) bullet and 104 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 53,171 psi | 86% | 2454 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,911 psi | 88% | 2516 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,056 psi | 87% | 2507 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,127 psi | 86% | 2526 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,853 psi | 88% | 2507 fps | 96.4% |
| Accurate 4064 | <<locked>> | 94% | 53,983 psi | 87% | 2549 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,125 psi | 81% | 2566 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 55,985 psi | 90% | 2444 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,724 psi | 90% | 2582 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 53,490 psi | 86% | 2536 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,027 psi | 89% | 2543 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,245 psi | 89% | 2520 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,084 psi | 86% | 2592 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,390 psi | 89% | 2687 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 52,837 psi | 85% | 2552 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 52,852 psi | 85% | 2457 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,505 psi | 86% | 2572 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2572 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,505 psi | 86% | 2657 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,519 psi | 56% | 2323 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,274 psi | 89% | 2444 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,825 psi | 90% | 2598 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 53,243 psi | 86% | 2566 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,969 psi | 87% | 2536 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,490 psi | 86% | 2484 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,998 psi | 87% | 2569 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,130 psi | 90% | 2657 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 55,564 psi | 90% | 2536 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,127 psi | 86% | 2516 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,476 psi | 88% | 2575 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,737 psi | 87% | 2615 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 98% | 55,027 psi | 89% | 2585 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 52,852 psi | 85% | 2549 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,208 psi | 73% | 2464 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,492 psi | 89% | 2621 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,085 psi | 89% | 2648 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,838 psi | 56% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,288 psi | 87% | 2552 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 55,912 psi | 90% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,939 psi | 85% | 2520 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,345 psi | 86% | 2500 fps | 96.9% |
| IMR 4198 | <<locked>> | 82% | 53,417 psi | 86% | 2425 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,647 psi | 82% | 2507 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,956 psi | 90% | 2566 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,703 psi | 77% | 2513 fps | 98.6% |
| IMR 4895 | <<locked>> | 92% | 54,853 psi | 88% | 2602 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 55,027 psi | 89% | 2543 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,955 psi | 89% | 2530 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,071 psi | 89% | 2559 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,651 psi | 90% | 2520 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 55,651 psi | 90% | 2559 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2556 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,040 psi | 84% | 2536 fps | 97% |
| Norma 201 | <<locked>> | 90% | 54,244 psi | 87% | 2533 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,926 psi | 88% | 2536 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,634 psi | 85% | 2562 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 49,647 psi | 80% | 2556 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 92% | 53,156 psi | 86% | 2582 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,950 psi | 79% | 2552 fps | 97.2% |
| Ramshot TAC | <<locked>> | 88% | 55,608 psi | 90% | 2559 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,824 psi | 88% | 2575 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,736 psi | 85% | 2500 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 57% | 1585 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,607 psi | 88% | 2526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,245 psi | 89% | 2562 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,853 psi | 87% | 2635 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,359 psi | 86% | 2664 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,763 psi | 80% | 2582 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,618 psi | 82% | 2608 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 88% | 55,085 psi | 89% | 2516 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,679 psi | 88% | 2530 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 52,866 psi | 85% | 2556 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 53,969 psi | 87% | 2536 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2556 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,071 psi | 89% | 2559 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,651 psi | 90% | 2559 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,040 psi | 84% | 2536 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,302 psi | 87% | 2500 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,013 psi | 89% | 2612 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,070 psi | 87% | 2480 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,563 psi | 86% | 2533 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,302 psi | 87% | 2559 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,982 psi | 85% | 2441 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,011 psi | 85% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2513 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 52,547 psi | 85% | 2526 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,405 psi | 89% | 2480 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,156 psi | 86% | 2530 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 53,476 psi | 86% | 2556 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,338 psi | 71% | 2513 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 52,808 psi | 85% | 2411 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,098 psi | 86% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,128 psi | 87% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,521 psi | 89% | 2516 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,100 psi | 89% | 2539 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,518 psi | 85% | 2559 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 55,521 psi | 89% | 2543 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,679 psi | 86% | 2516 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,314 psi | 83% | 2559 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,941 psi | 60% | 2388 fps | 96.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,403 psi | 86% | 2543 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,056 psi | 89% | 2585 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,954 psi | 87% | 2618 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,056 psi | 87% | 2566 fps | 100% |
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% | 43,947 psi | 71% | 2333 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,921 psi | 77% | 2428 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,042 psi | 58% | 2251 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,149 psi | 70% | 2388 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 51,256 psi | 83% | 2457 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 34,113 psi | 55% | 2238 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 34,954 psi | 56% | 2306 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 52,591 psi | 85% | 2405 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,524 psi | 65% | 2349 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 34,490 psi | 56% | 2215 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,656 psi | 69% | 2362 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 42,192 psi | 68% | 2356 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,705 psi | 80% | 2543 fps | 99.8% |
| Alliant Power Pro 2000-MR | 65.3 gr | 80% | 36,637 psi | 59% | 2359 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,678 psi | 54% | 2231 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,734 psi | 80% | 2418 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,332 psi | 59% | 2287 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,926 psi | 58% | 2326 fps | 95.5% |
| Alliant Reloder-17 | 65.9 gr | 82% | 31,053 psi | 50% | 2238 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,445 psi | 52% | 2270 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,735 psi | 83% | 2402 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,508 psi | 64% | 2346 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 32,837 psi | 53% | 2224 fps | 97.1% |
| Bofors RP7 | <<locked>> | 94% | 47,369 psi | 76% | 2438 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,483 psi | 72% | 2352 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,017 psi | 66% | 2375 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,179 psi | 73% | 2500 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 48,791 psi | 79% | 2451 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,719 psi | 80% | 2474 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,477 psi | 59% | 2280 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 46,818 psi | 75% | 2513 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 96% | 51,430 psi | 83% | 2533 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,886 psi | 66% | 2359 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,676 psi | 49% | 2182 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,709 psi | 59% | 2326 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 96% | 47,572 psi | 77% | 2533 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,744 psi | 41% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,378 psi | 63% | 2316 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 40,089 psi | 65% | 2359 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,158 psi | 58% | 2244 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,963 psi | 76% | 2405 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 50,256 psi | 81% | 2385 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 47,384 psi | 76% | 2457 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,528 psi | 75% | 2425 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 34,084 psi | 55% | 2274 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,202 psi | 60% | 2313 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 42,656 psi | 69% | 2362 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 47,776 psi | 77% | 2434 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,957 psi | 63% | 2326 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,017 psi | 66% | 2297 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 35,752 psi | 58% | 2247 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 40,089 psi | 65% | 2326 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 45,876 psi | 74% | 2441 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 39,465 psi | 64% | 2306 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 39,871 psi | 64% | 2320 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,694 psi | 57% | 2277 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 35,795 psi | 58% | 2316 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 35,201 psi | 57% | 2283 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 96% | 42,830 psi | 69% | 2448 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 42,380 psi | 68% | 2356 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,829 psi | 67% | 2379 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,137 psi | 74% | 2402 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,976 psi | 42% | 1414 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,950 psi | 77% | 2438 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,351 psi | 68% | 2362 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,753 psi | 61% | 2372 fps | 96.9% |
| ReloadSwiss RS 60 | 64.3 gr | 80% | 30,951 psi | 50% | 2247 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,594 psi | 61% | 2379 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,133 psi | 66% | 2441 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 43,192 psi | 70% | 2349 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,608 psi | 61% | 2264 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 30,879 psi | 50% | 2175 fps | 96% |
| Rottweil R 907 | <<locked>> | 94% | 47,369 psi | 76% | 2438 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,089 psi | 65% | 2326 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,957 psi | 63% | 2326 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,752 psi | 58% | 2247 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 45,876 psi | 74% | 2441 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,749 psi | 82% | 2454 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,198 psi | 52% | 2221 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,604 psi | 82% | 2438 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,422 psi | 65% | 2329 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,102 psi | 63% | 2320 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,133 psi | 66% | 2274 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,895 psi | 55% | 2152 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,281 psi | 73% | 2369 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 45,788 psi | 74% | 2428 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 40,640 psi | 65% | 2274 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,234 psi | 65% | 2333 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 31,923 psi | 51% | 2185 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 27,876 psi | 45% | 2165 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 46,673 psi | 75% | 2336 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,408 psi | 67% | 2274 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,695 psi | 59% | 2254 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,652 psi | 61% | 2260 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,371 psi | 49% | 2133 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 35,143 psi | 57% | 2267 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 42,496 psi | 68% | 2356 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,158 psi | 58% | 2247 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,753 psi | 59% | 2316 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 96% | 32,343 psi | 52% | 2290 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,053 psi | 50% | 2156 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,785 psi | 67% | 2392 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 47,007 psi | 76% | 2513 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,319 psi | 62% | 2320 fps | 98.2% |
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 104 powders for .375 Ruger loaded with the .376 | 270gr | Peregrine Bushmaster (VRG-3). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,687 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (428 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.376" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 .376 | 270gr | Peregrine Bushmaster (VRG-3) they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.