Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Sierra Pro-Hunter bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 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.
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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>> | 82% | 55,912 psi | 90% | 2943 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,259 psi | 89% | 2969 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,751 psi | 86% | 2963 fps | 96.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,253 psi | 74% | 2917 fps | 96.9% |
| Accurate 4064 | <<locked>> | 88% | 55,579 psi | 89% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,883 psi | 90% | 3114 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 55,042 psi | 88% | 3048 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,304 psi | 90% | 3051 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,012 psi | 87% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,158 psi | 88% | 2972 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,216 psi | 89% | 3176 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,519 psi | 86% | 3081 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,243 psi | 85% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,621 psi | 86% | 3041 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,229 psi | 85% | 3114 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,230 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,598 psi | 70% | 2946 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,647 psi | 80% | 3133 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,100 psi | 88% | 3064 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 54,027 psi | 87% | 3038 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,679 psi | 86% | 3005 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,521 psi | 89% | 2979 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,708 psi | 86% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,737 psi | 88% | 3051 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 54,679 psi | 88% | 3104 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 54,998 psi | 88% | 3064 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 55,680 psi | 89% | 3058 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,113 psi | 85% | 3035 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,695 psi | 89% | 3097 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,259 psi | 89% | 3140 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 57% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,330 psi | 86% | 3005 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,115 psi | 90% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,811 psi | 89% | 3035 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,376 psi | 89% | 3009 fps | 97.8% |
| IMR 4350 | <<locked>> | 96% | 54,317 psi | 87% | 3031 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,622 psi | 89% | 3041 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 56,289 psi | 90% | 3100 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 55,013 psi | 88% | 3074 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,012 psi | 87% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,288 psi | 89% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,433 psi | 87% | 2972 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 55,724 psi | 89% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,114 psi | 88% | 3031 fps | 98.8% |
| Lovex S070 | <<locked>> | 96% | 56,289 psi | 90% | 3068 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 53,896 psi | 86% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,404 psi | 87% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,910 psi | 85% | 3028 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 55,114 psi | 88% | 3087 fps | 96% |
| Norma MRPᴾ | <<locked>> | 100% | 49,095 psi | 79% | 3081 fps | 96.5% |
| Norma URP | <<locked>> | 96% | 54,549 psi | 87% | 3094 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 53,490 psi | 86% | 3051 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 53,563 psi | 86% | 3091 fps | 98.4% |
| Ramshot TAC | <<locked>> | 82% | 54,259 psi | 87% | 3012 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,085 psi | 87% | 3031 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 58% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,665 psi | 88% | 3025 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,070 psi | 87% | 3107 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,925 psi | 86% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,593 psi | 89% | 3133 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,578 psi | 88% | 3156 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 54,810 psi | 88% | 2976 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,607 psi | 88% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,867 psi | 86% | 3031 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 53,679 psi | 86% | 3005 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,114 psi | 88% | 3031 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,288 psi | 89% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,724 psi | 89% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,289 psi | 90% | 3068 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,405 psi | 89% | 3091 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,707 psi | 85% | 2989 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,577 psi | 86% | 3015 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,056 psi | 88% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,767 psi | 89% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,405 psi | 89% | 2986 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 54,592 psi | 88% | 2927 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,159 psi | 90% | 3038 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,070 psi | 87% | 3028 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,924 psi | 85% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,446 psi | 84% | 3028 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 84% | 55,419 psi | 89% | 2913 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,491 psi | 87% | 2956 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,056 psi | 88% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,361 psi | 89% | 3002 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,388 psi | 86% | 3035 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 82% | 54,346 psi | 87% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,432 psi | 86% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,159 psi | 90% | 3097 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,617 psi | 78% | 3031 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,359 psi | 86% | 3009 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,766 psi | 88% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,926 psi | 88% | 3107 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,291 psi | 63% | 2963 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,708 psi | 86% | 3025 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% | 52,576 psi | 84% | 2894 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,585 psi | 73% | 2818 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,210 psi | 76% | 2848 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 40,292 psi | 65% | 2799 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,105 psi | 69% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,345 psi | 55% | 2680 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,530 psi | 78% | 2933 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,249 psi | 66% | 2772 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,633 psi | 81% | 2940 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,663 psi | 83% | 2920 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,672 psi | 72% | 2972 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 50,053 psi | 80% | 3015 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,321 psi | 66% | 2799 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,164 psi | 71% | 2864 fps | 98.6% |
| Alliant Reloder-16 | 58.1 gr | 82% | 34,084 psi | 55% | 2690 fps | 95% |
| Alliant Reloder-17 | 61.1 gr | 80% | 35,897 psi | 58% | 2766 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,821 psi | 51% | 2651 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 37,115 psi | 60% | 2851 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,225 psi | 77% | 2943 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 41,307 psi | 66% | 2805 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 47,485 psi | 76% | 2890 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,083 psi | 84% | 2927 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,082 psi | 80% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,901 psi | 67% | 2808 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 44,715 psi | 72% | 2917 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 48,443 psi | 78% | 2946 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,052 psi | 79% | 2946 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 31,401 psi | 50% | 2582 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,368 psi | 73% | 2917 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 47,630 psi | 76% | 2999 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 43% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,934 psi | 75% | 2890 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 49,284 psi | 79% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,337 psi | 69% | 2808 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,788 psi | 73% | 2835 fps | 95.7% |
| IMR 4350 | <<locked>> | 92% | 47,892 psi | 77% | 2917 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,267 psi | 74% | 2867 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 35,404 psi | 57% | 2690 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 45,295 psi | 73% | 2900 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 50,633 psi | 81% | 2940 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,327 psi | 77% | 2913 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,225 psi | 77% | 2867 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 43,555 psi | 70% | 2815 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 40,538 psi | 65% | 2749 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 43,888 psi | 70% | 2841 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,659 psi | 76% | 2884 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 48,051 psi | 77% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,555 psi | 70% | 2851 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 51,474 psi | 83% | 3022 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 45,658 psi | 73% | 3009 fps | 95.5% |
| Norma URP | <<locked>> | 84% | 36,840 psi | 59% | 2743 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 43,410 psi | 70% | 2867 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 40,872 psi | 66% | 2838 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 50,749 psi | 81% | 2949 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,488 psi | 81% | 2969 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 43% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,206 psi | 68% | 2789 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,079 psi | 75% | 2982 fps | 99% |
| ReloadSwiss RS 60 | 61.1 gr | 80% | 38,203 psi | 61% | 2838 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,535 psi | 59% | 2756 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,711 psi | 62% | 2825 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 51,590 psi | 83% | 2923 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,237 psi | 73% | 2831 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 38,783 psi | 62% | 2746 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 47,485 psi | 76% | 2890 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,538 psi | 65% | 2749 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,327 psi | 77% | 2913 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,555 psi | 70% | 2815 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 43,888 psi | 70% | 2841 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,740 psi | 64% | 2795 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,342 psi | 79% | 2927 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,036 psi | 75% | 2900 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,718 psi | 78% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,857 psi | 66% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,527 psi | 73% | 2808 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,443 psi | 78% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,095 psi | 79% | 2920 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 39,479 psi | 63% | 2749 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 28,877 psi | 46% | 2566 fps | 96.3% |
| Somchem S385 | <<locked>> | 96% | 45,818 psi | 73% | 2907 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,139 psi | 79% | 2822 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,165 psi | 72% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,527 psi | 73% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,536 psi | 60% | 2677 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 35,911 psi | 58% | 2684 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 51,024 psi | 82% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,976 psi | 71% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,433 psi | 57% | 2684 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 32,474 psi | 52% | 2674 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,286 psi | 53% | 2602 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 51,213 psi | 82% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,918 psi | 72% | 2920 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,197 psi | 48% | 2677 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,847 psi | 75% | 2907 fps | 99.6% |
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 94 powders for .300 H&H Mag. loaded with the .308 | 150gr | Sierra Pro-Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,903 fps to 3,176 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, 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 Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for .300 H&H Mag. with the .308 | 150gr | Sierra Pro-Hunter 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.