Load Specifications
Bullet Manufacturer:Alaska Bullet Works
Bullet Weight:300 gr
Bullet Diameter:0.375"
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 .375 | 300gr | Alaska Bullet Works Kodiak PP SPBC bullet and 103 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, Alliant Reloder-17 and ReloadSwiss RS 60.
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>> | 86% | 55,637 psi | 89% | 2388 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,882 psi | 86% | 2415 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,809 psi | 86% | 2411 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,811 psi | 89% | 2470 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,447 psi | 86% | 2411 fps | 96.8% |
| Accurate 4064 | <<locked>> | 92% | 53,621 psi | 86% | 2451 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2523 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 54,505 psi | 87% | 2480 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 55,448 psi | 89% | 2477 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,853 psi | 86% | 2438 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,288 psi | 87% | 2415 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,550 psi | 89% | 2530 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,838 psi | 86% | 2585 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,172 psi | 88% | 2500 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,317 psi | 89% | 2388 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,999 psi | 90% | 2520 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2526 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,637 psi | 89% | 2608 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,448 psi | 58% | 2297 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,176 psi | 64% | 2428 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,288 psi | 87% | 2500 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 55,695 psi | 89% | 2513 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,144 psi | 90% | 2487 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,666 psi | 89% | 2421 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,434 psi | 90% | 2513 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,737 psi | 88% | 2552 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 54,520 psi | 87% | 2431 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,448 psi | 89% | 2457 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,476 psi | 86% | 2480 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 2569 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 96% | 53,563 psi | 86% | 2490 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 88% | 55,071 psi | 88% | 2490 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,427 psi | 76% | 2418 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,215 psi | 87% | 2520 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,069 psi | 85% | 2552 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 57% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,434 psi | 90% | 2493 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,042 psi | 88% | 2474 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,027 psi | 88% | 2464 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,419 psi | 89% | 2451 fps | 98% |
| IMR 4198 | <<locked>> | 82% | 55,506 psi | 89% | 2349 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,649 psi | 84% | 2464 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,708 psi | 88% | 2470 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,024 psi | 80% | 2470 fps | 99.3% |
| IMR 4895 | <<locked>> | 90% | 53,853 psi | 86% | 2500 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 53,853 psi | 86% | 2438 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,780 psi | 86% | 2425 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,998 psi | 87% | 2461 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,520 psi | 87% | 2418 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 54,607 psi | 88% | 2461 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,664 psi | 86% | 2461 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2493 fps | 98.1% |
| Norma 201 | <<locked>> | 88% | 53,359 psi | 86% | 2431 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,911 psi | 86% | 2434 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,158 psi | 88% | 2510 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 52,141 psi | 84% | 2513 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 92% | 55,564 psi | 89% | 2533 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,024 psi | 82% | 2510 fps | 98.2% |
| Ramshot TAC | <<locked>> | 86% | 53,940 psi | 86% | 2457 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,417 psi | 86% | 2474 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,795 psi | 88% | 2444 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,810 psi | 57% | 1509 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,258 psi | 85% | 2421 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,809 psi | 86% | 2464 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,420 psi | 90% | 2579 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,622 psi | 89% | 2608 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2546 fps | 99.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,605 psi | 84% | 2569 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 86% | 54,563 psi | 87% | 2415 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,795 psi | 86% | 2431 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,550 psi | 89% | 2507 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,144 psi | 90% | 2487 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,664 psi | 86% | 2461 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,998 psi | 87% | 2461 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,607 psi | 88% | 2461 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2493 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,664 psi | 86% | 2516 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,231 psi | 90% | 2408 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,985 psi | 90% | 2487 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,055 psi | 85% | 2461 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,143 psi | 88% | 2379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,071 psi | 88% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,244 psi | 87% | 2425 fps | 97.7% |
| Somchem S321 | <<locked>> | 84% | 54,897 psi | 88% | 2470 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,302 psi | 87% | 2375 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,434 psi | 89% | 2477 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 55,927 psi | 90% | 2503 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,557 psi | 75% | 2470 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,940 psi | 88% | 2343 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,274 psi | 89% | 2362 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,374 psi | 86% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,360 psi | 87% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,041 psi | 87% | 2441 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,766 psi | 88% | 2510 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 86% | 54,331 psi | 87% | 2438 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,941 psi | 90% | 2457 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,722 psi | 86% | 2520 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,204 psi | 63% | 2362 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,419 psi | 89% | 2497 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,766 psi | 86% | 2480 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,231 psi | 90% | 2575 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,489 psi | 52% | 2287 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,202 psi | 90% | 2510 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% | 46,369 psi | 74% | 2270 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,560 psi | 81% | 2372 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,001 psi | 63% | 2208 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,730 psi | 73% | 2339 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,891 psi | 75% | 2316 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,869 psi | 59% | 2205 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 32,721 psi | 52% | 2185 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 42,656 psi | 68% | 2300 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 36,230 psi | 58% | 2169 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,730 psi | 72% | 2306 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 44,527 psi | 71% | 2293 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,243 psi | 84% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | 62.7 gr | 80% | 38,508 psi | 62% | 2323 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,708 psi | 57% | 2192 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,069 psi | 83% | 2349 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,450 psi | 62% | 2244 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,460 psi | 54% | 2195 fps | 95.5% |
| Alliant Reloder-17 | 61.7 gr | 80% | 30,705 psi | 49% | 2159 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,645 psi | 46% | 2110 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 96% | 34,998 psi | 56% | 2313 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,524 psi | 67% | 2303 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 35,172 psi | 56% | 2192 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 43,903 psi | 70% | 2303 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,601 psi | 75% | 2297 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,163 psi | 69% | 2326 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,572 psi | 76% | 2451 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 51,024 psi | 82% | 2385 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,851 psi | 83% | 2411 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,042 psi | 58% | 2192 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 92% | 42,989 psi | 69% | 2372 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 92% | 47,166 psi | 76% | 2392 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 43,047 psi | 69% | 2310 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,819 psi | 46% | 2064 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,841 psi | 62% | 2287 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 46,224 psi | 74% | 2444 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 42% | 1312 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,336 psi | 66% | 2270 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 42,511 psi | 68% | 2306 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,014 psi | 61% | 2198 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,149 psi | 69% | 2260 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 52,431 psi | 84% | 2313 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 46,412 psi | 74% | 2369 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,018 psi | 69% | 2290 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 31,894 psi | 51% | 2149 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 39,378 psi | 63% | 2270 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 44,730 psi | 72% | 2306 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 50,227 psi | 81% | 2379 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,365 psi | 66% | 2280 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,946 psi | 69% | 2247 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 37,985 psi | 61% | 2205 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 37,405 psi | 60% | 2198 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 42,482 psi | 68% | 2310 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 41,814 psi | 67% | 2260 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 42,003 psi | 67% | 2267 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,840 psi | 61% | 2238 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 33,344 psi | 53% | 2188 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 37,130 psi | 60% | 2247 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 39,479 psi | 63% | 2316 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,512 psi | 71% | 2313 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,845 psi | 70% | 2329 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,051 psi | 77% | 2349 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,585 psi | 43% | 1345 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,980 psi | 80% | 2375 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,131 psi | 63% | 2228 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,045 psi | 64% | 2333 fps | 98.3% |
| ReloadSwiss RS 60 | 61.7 gr | 80% | 32,692 psi | 52% | 2218 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,751 psi | 56% | 2247 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,608 psi | 60% | 2303 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 45,701 psi | 73% | 2293 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,740 psi | 64% | 2218 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,083 psi | 53% | 2142 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 43,903 psi | 70% | 2303 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,405 psi | 60% | 2198 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,365 psi | 66% | 2280 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,985 psi | 61% | 2205 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 92% | 42,482 psi | 68% | 2310 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,098 psi | 55% | 2188 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,069 psi | 85% | 2369 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,583 psi | 68% | 2287 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,104 psi | 66% | 2274 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,337 psi | 69% | 2218 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,911 psi | 58% | 2106 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,785 psi | 67% | 2241 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 48,008 psi | 77% | 2375 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,830 psi | 69% | 2221 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,279 psi | 68% | 2287 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 34,113 psi | 55% | 2152 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 26,281 psi | 42% | 2051 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 48,965 psi | 79% | 2270 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,598 psi | 70% | 2215 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,146 psi | 63% | 2205 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,668 psi | 64% | 2211 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,343 psi | 52% | 2096 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 32,692 psi | 52% | 2142 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 44,686 psi | 72% | 2303 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 38,130 psi | 61% | 2201 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,084 psi | 55% | 2188 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 30,501 psi | 49% | 2175 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,747 psi | 46% | 2031 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 44,034 psi | 71% | 2343 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 43,178 psi | 69% | 2375 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,616 psi | 46% | 2172 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,466 psi | 65% | 2280 fps | 99.1% |
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 103 powders for .375 H&H Mag. loaded with the .375 | 300gr | Alaska Bullet Works Kodiak PP SPBC. Alliant Reloder-17 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,473 fps to 2,608 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.375" 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .375 H&H Mag. with the .375 | 300gr | Alaska Bullet Works Kodiak PP SPBC 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.