Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:307 gr
Bullet Diameter:0.376"
Bullet Length:<<locked>>
Caliber:.375 H&H Mag. load data
Case Length (l3):2.859"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:95.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 H&H Mag. with .376 | 307gr | Peregrine VRG-2 bullet and 106 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 ReloadSwiss RS 52.
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 2015 | <<locked>> | 88% | 56,347 psi | 90% | 2356 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,563 psi | 87% | 2382 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,664 psi | 86% | 2375 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,434 psi | 90% | 2438 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,404 psi | 87% | 2382 fps | 96.9% |
| Accurate 4064 | <<locked>> | 94% | 53,388 psi | 86% | 2411 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,342 psi | 79% | 2438 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 82% | 55,724 psi | 89% | 2306 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,159 psi | 90% | 2329 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,405 psi | 89% | 2451 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 56,362 psi | 90% | 2448 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,752 psi | 88% | 2408 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,766 psi | 88% | 2379 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 52,939 psi | 85% | 2454 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,911 psi | 88% | 2556 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,825 psi | 90% | 2464 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,043 psi | 90% | 2356 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,185 psi | 85% | 2441 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,472 psi | 78% | 2441 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,634 psi | 84% | 2526 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,026 psi | 55% | 2211 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,434 psi | 60% | 2329 fps | 96.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,781 psi | 88% | 2310 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,216 psi | 89% | 2467 fps | 99.7% |
| Bofors RP3 | <<locked>> | 96% | 56,159 psi | 90% | 2477 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,287 psi | 85% | 2405 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,243 psi | 85% | 2349 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,476 psi | 86% | 2434 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,564 psi | 89% | 2520 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 55,434 psi | 89% | 2398 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,779 psi | 85% | 2382 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,969 psi | 87% | 2448 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,837 psi | 85% | 2484 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 98% | 54,230 psi | 87% | 2454 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 90% | 55,970 psi | 90% | 2457 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,643 psi | 72% | 2339 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,737 psi | 88% | 2487 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,085 psi | 87% | 2520 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,911 psi | 56% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,983 psi | 87% | 2418 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,390 psi | 89% | 2438 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,767 psi | 89% | 2431 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,405 psi | 90% | 2418 fps | 98% |
| IMR 4198 | <<locked>> | 82% | 53,330 psi | 86% | 2283 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,966 psi | 80% | 2382 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,390 psi | 89% | 2434 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,949 psi | 75% | 2385 fps | 98.9% |
| IMR 4895 | <<locked>> | 92% | 54,549 psi | 87% | 2467 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 54,752 psi | 88% | 2408 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,389 psi | 87% | 2392 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,563 psi | 87% | 2428 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,288 psi | 89% | 2385 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 55,259 psi | 89% | 2428 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,070 psi | 87% | 2425 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2411 fps | 97.5% |
| Norma 201 | <<locked>> | 90% | 53,940 psi | 86% | 2398 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,404 psi | 87% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,738 psi | 89% | 2474 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 49,023 psi | 79% | 2431 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 94% | 56,420 psi | 90% | 2500 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,269 psi | 77% | 2428 fps | 97.6% |
| Ramshot TAC | <<locked>> | 88% | 54,998 psi | 88% | 2428 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,331 psi | 87% | 2441 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,709 psi | 89% | 2411 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,346 psi | 57% | 1470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,230 psi | 87% | 2388 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,549 psi | 87% | 2431 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,156 psi | 85% | 2497 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,246 psi | 90% | 2572 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,892 psi | 78% | 2457 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2480 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 88% | 54,882 psi | 88% | 2379 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,418 psi | 87% | 2398 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,753 psi | 89% | 2467 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 53,287 psi | 85% | 2405 fps | 97% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,070 psi | 87% | 2425 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,563 psi | 87% | 2428 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,259 psi | 89% | 2428 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2411 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,940 psi | 86% | 2365 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,404 psi | 87% | 2484 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,853 psi | 86% | 2336 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,098 psi | 85% | 2405 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,664 psi | 86% | 2425 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,999 psi | 90% | 2346 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,825 psi | 90% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,824 psi | 88% | 2388 fps | 97.7% |
| Somchem S321 | <<locked>> | 86% | 55,695 psi | 89% | 2438 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,114 psi | 88% | 2346 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,420 psi | 90% | 2444 fps | 100% |
| Somchem S355 | <<locked>> | 98% | 56,420 psi | 90% | 2467 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,642 psi | 70% | 2385 fps | 100% |
| Vihtavuori N130 | <<locked>> | 86% | 55,999 psi | 90% | 2313 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,115 psi | 90% | 2333 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,896 psi | 86% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,114 psi | 88% | 2385 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,433 psi | 87% | 2405 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,779 psi | 83% | 2431 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 55,056 psi | 88% | 2405 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,127 psi | 85% | 2385 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,604 psi | 81% | 2434 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,376 psi | 58% | 2274 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,504 psi | 84% | 2418 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 54,505 psi | 87% | 2448 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,084 psi | 85% | 2487 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,417 psi | 86% | 2434 fps | 100% |
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 2015 | <<locked>> | 80% | 43,830 psi | 70% | 2201 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,776 psi | 77% | 2297 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,853 psi | 57% | 2129 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,859 psi | 69% | 2260 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,529 psi | 76% | 2283 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 33,968 psi | 54% | 2123 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 32,329 psi | 52% | 2146 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 52,533 psi | 84% | 2267 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,939 psi | 85% | 2290 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,408 psi | 65% | 2228 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,316 psi | 55% | 2096 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,540 psi | 68% | 2234 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,959 psi | 67% | 2221 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,574 psi | 79% | 2405 fps | 99.9% |
| Alliant Power Pro 2000-MR | 59.7 gr | 80% | 36,347 psi | 58% | 2241 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,446 psi | 54% | 2113 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,690 psi | 80% | 2280 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,201 psi | 58% | 2169 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,620 psi | 54% | 2165 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 28,834 psi | 46% | 2077 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,168 psi | 48% | 2119 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 34,882 psi | 56% | 2274 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,459 psi | 83% | 2270 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,262 psi | 63% | 2224 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 32,764 psi | 53% | 2113 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 44,237 psi | 71% | 2270 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,425 psi | 71% | 2228 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,611 psi | 65% | 2251 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,831 psi | 72% | 2369 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 48,617 psi | 78% | 2316 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,327 psi | 79% | 2339 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 33,881 psi | 54% | 2116 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 94% | 43,366 psi | 70% | 2339 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 47,747 psi | 77% | 2362 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 40,756 psi | 65% | 2238 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,660 psi | 46% | 2028 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,608 psi | 59% | 2208 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 96% | 46,862 psi | 75% | 2411 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,933 psi | 42% | 1280 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,233 psi | 63% | 2195 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 40,030 psi | 64% | 2231 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,984 psi | 58% | 2126 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,772 psi | 70% | 2234 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 50,401 psi | 81% | 2247 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 46,934 psi | 75% | 2336 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 43,410 psi | 70% | 2257 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 31,633 psi | 51% | 2116 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,086 psi | 59% | 2195 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 42,540 psi | 68% | 2234 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 47,413 psi | 76% | 2303 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,870 psi | 62% | 2208 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 40,828 psi | 65% | 2172 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 35,607 psi | 57% | 2126 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 37,347 psi | 60% | 2162 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 42,554 psi | 68% | 2274 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,320 psi | 63% | 2182 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 39,595 psi | 63% | 2195 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,578 psi | 57% | 2159 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 33,228 psi | 53% | 2152 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 34,911 psi | 56% | 2165 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 39,610 psi | 64% | 2280 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 42,148 psi | 68% | 2234 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,495 psi | 67% | 2254 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,774 psi | 73% | 2274 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 42% | 1312 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,776 psi | 77% | 2306 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 39,334 psi | 63% | 2198 fps | 95% |
| ReloadSwiss RS 52 | 57.9 gr | 80% | 37,507 psi | 60% | 2251 fps | 97.7% |
| ReloadSwiss RS 60 | 58.8 gr | 80% | 30,734 psi | 49% | 2136 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,722 psi | 56% | 2215 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 37,971 psi | 61% | 2274 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 43,221 psi | 69% | 2221 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,362 psi | 60% | 2142 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 30,690 psi | 49% | 2064 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 44,237 psi | 71% | 2270 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 37,347 psi | 60% | 2162 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,870 psi | 62% | 2208 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 35,607 psi | 57% | 2126 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 94% | 42,554 psi | 68% | 2274 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,357 psi | 81% | 2320 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,024 psi | 51% | 2110 fps | 96.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,618 psi | 81% | 2300 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,118 psi | 64% | 2208 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,899 psi | 62% | 2201 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,118 psi | 66% | 2149 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,866 psi | 54% | 2037 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 41,916 psi | 67% | 2208 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 45,484 psi | 73% | 2300 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 40,495 psi | 65% | 2149 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,001 psi | 64% | 2211 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 31,836 psi | 51% | 2073 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 25,933 psi | 42% | 2011 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 46,659 psi | 75% | 2201 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,394 psi | 66% | 2146 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,680 psi | 59% | 2129 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,420 psi | 60% | 2139 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,153 psi | 48% | 2021 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 32,735 psi | 52% | 2113 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 42,438 psi | 68% | 2231 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 36,013 psi | 58% | 2133 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 34,069 psi | 55% | 2156 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 29,965 psi | 48% | 2133 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,819 psi | 46% | 2001 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 41,626 psi | 67% | 2267 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 43,555 psi | 70% | 2343 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,058 psi | 61% | 2201 fps | 98.7% |
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 106 powders for .375 H&H Mag. loaded with the .376 | 307gr | Peregrine VRG-2. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,572 fps. Accurate 4350 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 307.0 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, ReloadSwiss RS 52 rank at the top here: for .375 H&H Mag. with the .376 | 307gr | Peregrine VRG-2 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.