Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:300 gr
Bullet Diameter:0.376"
Bullet Length:<<locked>>
Caliber:.375 Rem. Ultra Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:117 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 Rem. Ultra Mag. with .376 | 300gr | Peregrine VRG-1 bullet and 112 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-16.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 54,172 psi | 85% | 2444 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,463 psi | 88% | 2513 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2493 fps | 99.4% |
| Accurate 4064 | <<locked>> | 86% | 54,491 psi | 85% | 2493 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,303 psi | 87% | 2592 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,244 psi | 85% | 2523 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,550 psi | 87% | 2530 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,797 psi | 89% | 2631 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2569 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,521 psi | 89% | 2516 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,520 psi | 85% | 2638 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,724 psi | 89% | 2628 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,956 psi | 88% | 2546 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,333 psi | 88% | 2569 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,231 psi | 88% | 2641 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,795 psi | 84% | 2618 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2621 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,110 psi | 77% | 2569 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,282 psi | 73% | 2513 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,451 psi | 63% | 2444 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2684 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,186 psi | 85% | 2539 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,063 psi | 71% | 2500 fps | 96.7% |
| Bofors RP3 | <<locked>> | 88% | 56,811 psi | 89% | 2562 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,110 psi | 77% | 2569 fps | 97.8% |
| Bofors RP7 | <<locked>> | 92% | 56,405 psi | 88% | 2549 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,347 psi | 88% | 2546 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,363 psi | 90% | 2579 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 54,099 psi | 85% | 2592 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 90% | 54,375 psi | 85% | 2556 fps | 98.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 2575 fps | 96.6% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2559 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 82% | 54,839 psi | 86% | 2530 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,492 psi | 89% | 2569 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,027 psi | 86% | 2562 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,418 psi | 85% | 2625 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 56% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,144 psi | 88% | 2533 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,376 psi | 87% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,882 psi | 86% | 2510 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,259 psi | 85% | 2497 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 57,174 psi | 90% | 2575 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,665 psi | 86% | 2530 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 55,753 psi | 87% | 2582 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,186 psi | 85% | 2546 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2569 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 48,269 psi | 76% | 2543 fps | 96% |
| IMR 8208 XBR | <<locked>> | 82% | 56,521 psi | 89% | 2516 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,433 psi | 85% | 2497 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,855 psi | 89% | 2500 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,926 psi | 86% | 2503 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,404 psi | 85% | 2523 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 55,651 psi | 87% | 2559 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,596 psi | 64% | 2359 fps | 98.1% |
| Norma 201 | <<locked>> | 84% | 56,362 psi | 88% | 2513 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,188 psi | 90% | 2510 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,564 psi | 87% | 2556 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,273 psi | 85% | 2575 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 52,243 psi | 82% | 2644 fps | 99.3% |
| Norma URP | <<locked>> | 94% | 54,244 psi | 85% | 2579 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,391 psi | 88% | 2579 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2552 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 56,724 psi | 89% | 2631 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,641 psi | 67% | 2438 fps | 96.8% |
| Ramshot TAC | <<locked>> | 82% | 56,739 psi | 89% | 2546 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,826 psi | 89% | 2559 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,550 psi | 57% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,537 psi | 90% | 2566 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,493 psi | 90% | 2631 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,290 psi | 90% | 2657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,172 psi | 86% | 2612 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,027 psi | 85% | 2641 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,276 psi | 62% | 2451 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 82% | 56,869 psi | 89% | 2487 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,869 psi | 89% | 2513 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,695 psi | 89% | 2556 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,839 psi | 86% | 2556 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,882 psi | 86% | 2605 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 92% | 56,405 psi | 88% | 2549 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,404 psi | 85% | 2523 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,433 psi | 85% | 2497 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,926 psi | 86% | 2503 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,651 psi | 87% | 2559 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,955 psi | 86% | 2569 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,434 psi | 87% | 2530 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,362 psi | 88% | 2543 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,479 psi | 90% | 2451 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,795 psi | 86% | 2411 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,331 psi | 85% | 2480 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2602 fps | 98.5% |
| Somchem S335 | <<locked>> | 84% | 57,014 psi | 89% | 2448 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,129 psi | 86% | 2516 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,681 psi | 89% | 2549 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,768 psi | 89% | 2549 fps | 96.9% |
| Somchem S365 | <<locked>> | 98% | 56,811 psi | 89% | 2621 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,405 psi | 87% | 2582 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 82% | 54,563 psi | 86% | 2395 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,246 psi | 90% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,259 psi | 85% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,621 psi | 86% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,594 psi | 89% | 2572 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,906 psi | 75% | 2464 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 82% | 57,000 psi | 89% | 2516 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,898 psi | 88% | 2490 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,477 psi | 87% | 2579 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 2579 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,837 psi | 83% | 2635 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,405 psi | 88% | 2546 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,331 psi | 85% | 2595 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,597 psi | 65% | 2556 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,405 psi | 88% | 2549 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,098 psi | 82% | 2530 fps | 98% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 47,500 psi | 74% | 2362 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,079 psi | 72% | 2365 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 32,256 psi | 51% | 2198 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,020 psi | 71% | 2369 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,707 psi | 53% | 2241 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 80% | 50,865 psi | 80% | 2477 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,207 psi | 68% | 2349 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 40,872 psi | 64% | 2379 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 47,384 psi | 74% | 2516 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,040 psi | 83% | 2474 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,297 psi | 74% | 2536 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 40,799 psi | 64% | 2379 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,265 psi | 68% | 2369 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,398 psi | 73% | 2428 fps | 99.9% |
| Alliant Reloder-16 | 69.9 gr | 80% | 33,518 psi | 53% | 2254 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,782 psi | 59% | 2365 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,321 psi | 63% | 2372 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 40,219 psi | 63% | 2415 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,250 psi | 38% | 2034 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,256 psi | 49% | 2234 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 84% | 29,486 psi | 46% | 2234 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,676 psi | 79% | 2490 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 39,479 psi | 62% | 2398 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 43,294 psi | 68% | 2375 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 40,219 psi | 63% | 2415 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 38,450 psi | 60% | 2264 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,678 psi | 83% | 2500 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,932 psi | 69% | 2385 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 36,042 psi | 56% | 2287 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 39,204 psi | 61% | 2310 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 96% | 47,587 psi | 75% | 2474 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 98% | 49,777 psi | 78% | 2507 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,416 psi | 81% | 2484 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,024 psi | 49% | 2162 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,935 psi | 75% | 2470 fps | 100% |
| Hodgdon Superformance | 81.6 gr | 82% | 37,681 psi | 59% | 2346 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 42% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,327 psi | 77% | 2444 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,924 psi | 81% | 2464 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,426 psi | 71% | 2379 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,776 psi | 75% | 2402 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 36,579 psi | 57% | 2247 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,074 psi | 63% | 2297 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 32,648 psi | 51% | 2205 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 47,572 psi | 75% | 2454 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 49,545 psi | 78% | 2470 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 45,136 psi | 71% | 2490 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 53,040 psi | 83% | 2474 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,763 psi | 80% | 2451 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,285 psi | 79% | 2415 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,513 psi | 71% | 2375 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,391 psi | 59% | 2247 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 35,476 psi | 56% | 2228 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 31,125 psi | 49% | 2172 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,705 psi | 78% | 2428 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,212 psi | 79% | 2425 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,745 psi | 72% | 2418 fps | 100% |
| Norma 204 | <<locked>> | 86% | 41,234 psi | 65% | 2372 fps | 95.3% |
| Norma MRP | <<locked>> | 90% | 36,767 psi | 58% | 2372 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 33,924 psi | 53% | 2241 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 45,934 psi | 72% | 2438 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 44,788 psi | 70% | 2493 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 33,025 psi | 52% | 2231 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 39,755 psi | 62% | 2385 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 52,968 psi | 83% | 2497 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,997 psi | 83% | 2510 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 43% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,106 psi | 69% | 2372 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,038 psi | 78% | 2533 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,248 psi | 63% | 2418 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,620 psi | 53% | 2260 fps | 97.4% |
| ReloadSwiss RS 70 | 76.5 gr | 80% | 33,069 psi | 52% | 2264 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 36,608 psi | 57% | 2392 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 53,563 psi | 84% | 2448 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,166 psi | 74% | 2385 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,625 psi | 64% | 2326 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 45,179 psi | 71% | 2408 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 39,131 psi | 61% | 2356 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 38,450 psi | 60% | 2264 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,391 psi | 59% | 2247 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,763 psi | 80% | 2451 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,513 psi | 71% | 2375 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,476 psi | 56% | 2228 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,018 psi | 66% | 2379 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,561 psi | 81% | 2477 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,501 psi | 78% | 2454 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,720 psi | 79% | 2369 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,627 psi | 67% | 2254 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,550 psi | 57% | 2198 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,510 psi | 65% | 2402 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,459 psi | 79% | 2369 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,547 psi | 81% | 2470 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,336 psi | 65% | 2329 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 49,647 psi | 78% | 2451 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 30,414 psi | 48% | 2201 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 37,202 psi | 58% | 2293 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,271 psi | 80% | 2356 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,311 psi | 74% | 2352 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,659 psi | 75% | 2365 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,320 psi | 62% | 2270 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,346 psi | 55% | 2244 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 39,117 psi | 61% | 2320 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 53,403 psi | 84% | 2474 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,021 psi | 72% | 2362 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,838 psi | 55% | 2244 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 26,165 psi | 41% | 2100 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 96% | 45,934 psi | 72% | 2523 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,780 psi | 55% | 2221 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 36,187 psi | 57% | 2290 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,236 psi | 38% | 2103 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,255 psi | 77% | 2457 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,134 psi | 66% | 2375 fps | 95.7% |
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 Rem. Ultra Mag. loaded with the .376 | 300gr | Peregrine VRG-1. Alliant Reloder-26 delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,684 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.376" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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 70, Hodgdon Superformance, Alliant Reloder-16 rank at the top here: for .375 Rem. Ultra Mag. with the .376 | 300gr | Peregrine VRG-1 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.