Load Specifications
Load data in caliber .375 Ruger with .376 | 250gr | Peregrine Glider GRM bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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>> | 92% | 55,912 psi | 90% | 2556 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,214 psi | 86% | 2598 fps | 98.4% |
| Accurate 2230 | <<locked>> | 82% | 53,925 psi | 87% | 2608 fps | 98.8% |
| Accurate 2460 | <<locked>> | 88% | 54,737 psi | 88% | 2582 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 56,057 psi | 90% | 2605 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 56,144 psi | 90% | 2631 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 55,608 psi | 90% | 2641 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 53,330 psi | 86% | 2474 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,766 psi | 87% | 2493 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 55,230 psi | 89% | 2638 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 82% | 54,491 psi | 88% | 2493 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 52,852 psi | 85% | 2582 fps | 98.5% |
| ADI AR 2219 | <<locked>> | 84% | 53,287 psi | 86% | 2579 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,708 psi | 88% | 2598 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 53,998 psi | 87% | 2585 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,912 psi | 90% | 2697 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 54,737 psi | 88% | 2730 fps | 98.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 55,027 psi | 89% | 2644 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 56,043 psi | 90% | 2569 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,999 psi | 90% | 2664 fps | 99.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,878 psi | 79% | 2641 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,492 psi | 89% | 2510 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,912 psi | 90% | 2513 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,245 psi | 89% | 2648 fps | 98.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 2657 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,751 psi | 87% | 2546 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,113 psi | 86% | 2621 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 55,129 psi | 89% | 2710 fps | 99% |
| Hodgdon H322 | <<locked>> | 88% | 55,564 psi | 90% | 2608 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,055 psi | 85% | 2585 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,563 psi | 86% | 2618 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 82% | 55,172 psi | 89% | 2516 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 55,680 psi | 90% | 2648 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,435 psi | 62% | 2392 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,056 psi | 87% | 2667 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,084 psi | 55% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,940 psi | 87% | 2605 fps | 99.4% |
| IMR 3031 | <<locked>> | 94% | 54,389 psi | 88% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,666 psi | 90% | 2612 fps | 99% |
| IMR 4198 | <<locked>> | 86% | 53,461 psi | 86% | 2497 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 53,882 psi | 87% | 2648 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 92% | 54,708 psi | 88% | 2598 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 54,665 psi | 88% | 2592 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,665 psi | 88% | 2589 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 53,824 psi | 87% | 2615 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,825 psi | 90% | 2575 fps | 99.3% |
| Lovex S062 | <<locked>> | 98% | 54,621 psi | 88% | 2608 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 55,767 psi | 90% | 2543 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,563 psi | 86% | 2585 fps | 99.7% |
| Norma 202 | <<locked>> | 94% | 54,099 psi | 87% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 98% | 55,085 psi | 89% | 2654 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 98% | 55,985 psi | 90% | 2680 fps | 99.3% |
| Ramshot TAC | <<locked>> | 92% | 55,608 psi | 90% | 2608 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,273 psi | 87% | 2625 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 52,692 psi | 85% | 2552 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 55% | 1601 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,621 psi | 88% | 2592 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,534 psi | 88% | 2598 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 55,883 psi | 90% | 2726 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,315 psi | 84% | 2707 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,476 psi | 88% | 2575 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 54,056 psi | 87% | 2582 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,300 psi | 83% | 2595 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 82% | 54,665 psi | 88% | 2592 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,824 psi | 87% | 2615 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 54,621 psi | 88% | 2608 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,694 psi | 88% | 2562 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,128 psi | 87% | 2260 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,795 psi | 87% | 2589 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,780 psi | 87% | 2657 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,780 psi | 87% | 2546 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,113 psi | 86% | 2582 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,737 psi | 87% | 2608 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 52,881 psi | 85% | 2503 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 55,811 psi | 90% | 2536 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 56,028 psi | 90% | 2635 fps | 99.9% |
| Somchem S335 | <<locked>> | 94% | 54,969 psi | 89% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,605 psi | 85% | 2579 fps | 98.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2598 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,376 psi | 60% | 2438 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 82% | 54,433 psi | 88% | 2444 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 52,953 psi | 85% | 2484 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 52,779 psi | 85% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 52,794 psi | 85% | 2559 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 54,766 psi | 88% | 2575 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,546 psi | 81% | 2539 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,469 psi | 72% | 2490 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 92% | 55,390 psi | 89% | 2602 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 52,924 psi | 85% | 2572 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,064 psi | 74% | 2484 fps | 98.4% |
| Winchester 748 | <<locked>> | 92% | 54,157 psi | 87% | 2641 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,142 psi | 86% | 2615 fps | 99.4% |
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% | 38,247 psi | 62% | 2306 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,603 psi | 80% | 2546 fps | 97.8% |
| Accurate 2230 | <<locked>> | 80% | 50,183 psi | 81% | 2556 fps | 98.3% |
| Accurate 2460 | <<locked>> | 80% | 41,437 psi | 67% | 2392 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 30,211 psi | 49% | 2205 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 36,854 psi | 59% | 2343 fps | 98.7% |
| Accurate 4064 | <<locked>> | 80% | 28,645 psi | 46% | 2182 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 80% | 47,181 psi | 76% | 2392 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,543 psi | 77% | 2408 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 35,244 psi | 57% | 2297 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 51,300 psi | 83% | 2454 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,682 psi | 62% | 2349 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 46,456 psi | 75% | 2487 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,246 psi | 60% | 2316 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 80% | 35,636 psi | 57% | 2326 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,859 psi | 69% | 2493 fps | 98% |
| Alliant Power Pro 2000-MR | 66.4 gr | 88% | 41,640 psi | 67% | 2507 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,677 psi | 53% | 2267 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,729 psi | 70% | 2405 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,956 psi | 61% | 2375 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,911 psi | 56% | 2372 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,069 psi | 84% | 2467 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,963 psi | 74% | 2385 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,088 psi | 63% | 2388 fps | 95% |
| Bofors RP3 | <<locked>> | 84% | 31,894 psi | 51% | 2264 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,407 psi | 63% | 2320 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,027 psi | 56% | 2323 fps | 97.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 38,682 psi | 62% | 2434 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 42,424 psi | 68% | 2421 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,207 psi | 70% | 2441 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 43,758 psi | 70% | 2467 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 51,996 psi | 84% | 2477 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,418 psi | 57% | 2310 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,187 psi | 58% | 2349 fps | 95.7% |
| Hodgdon LEVERevolution | 60.7 gr | 82% | 33,765 psi | 54% | 2316 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,150 psi | 41% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,243 psi | 55% | 2270 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 34,069 psi | 55% | 2320 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 38,014 psi | 61% | 2333 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 44,686 psi | 72% | 2379 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 36,376 psi | 59% | 2356 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 37,246 psi | 60% | 2316 fps | 97.1% |
| Lovex D073.4 | <<locked>> | 80% | 50,662 psi | 82% | 2539 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 41,220 psi | 66% | 2392 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 80% | 33,069 psi | 53% | 2277 fps | 97.7% |
| Lovex S060 | <<locked>> | 80% | 36,201 psi | 58% | 2254 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 30,777 psi | 50% | 2192 fps | 95% |
| Norma 200 | <<locked>> | 80% | 49,066 psi | 79% | 2457 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,258 psi | 55% | 2257 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 34,447 psi | 55% | 2280 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 34,882 psi | 56% | 2313 fps | 95% |
| Ramshot Big Game | <<locked>> | 86% | 37,086 psi | 60% | 2372 fps | 95.4% |
| Ramshot TAC | <<locked>> | 86% | 45,498 psi | 73% | 2457 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,129 psi | 58% | 2326 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,495 psi | 65% | 2359 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,309 psi | 41% | 1434 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,945 psi | 68% | 2402 fps | 99.2% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 50,966 psi | 82% | 2549 fps | 95.5% |
| ReloadSwiss RS 52 | 62.9 gr | 86% | 39,421 psi | 64% | 2461 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,501 psi | 49% | 2274 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 37,724 psi | 61% | 2313 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 32,532 psi | 52% | 2215 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 88% | 34,243 psi | 55% | 2306 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 50,662 psi | 82% | 2539 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,069 psi | 53% | 2277 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 30,777 psi | 50% | 2192 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,454 psi | 72% | 2415 fps | 98.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,227 psi | 83% | 2228 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,021 psi | 76% | 2493 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 36,100 psi | 58% | 2359 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,483 psi | 72% | 2418 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 43,105 psi | 69% | 2428 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,187 psi | 58% | 2316 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,274 psi | 58% | 2244 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,515 psi | 48% | 2116 fps | 98.2% |
| Somchem S321 | <<locked>> | 80% | 39,755 psi | 64% | 2385 fps | 98.1% |
| Somchem S335 | <<locked>> | 80% | 35,549 psi | 57% | 2244 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 37,159 psi | 60% | 2326 fps | 95.6% |
| Somchem S355 | <<locked>> | 86% | 33,257 psi | 54% | 2270 fps | 95% |
| Somchem S365 | <<locked>> | 94% | 30,676 psi | 49% | 2280 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 51,227 psi | 83% | 2408 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,336 psi | 67% | 2323 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,347 psi | 59% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,343 psi | 50% | 2218 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,532 psi | 52% | 2221 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 29,660 psi | 48% | 2169 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 98% | 41,655 psi | 67% | 2441 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 36,999 psi | 60% | 2310 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 80% | 31,154 psi | 50% | 2205 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,172 psi | 57% | 2283 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 35,723 psi | 58% | 2343 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,099 psi | 57% | 2313 fps | 95.8% |
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 92 powders for .375 Ruger loaded with the .376 | 250gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,730 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,730 fps. Accurate 4064 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (428 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.376" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Alliant Reloder- TS 15.5, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .375 Ruger with the .376 | 250gr | Peregrine Glider GRM 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.