Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Woodleigh HS 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% | 56,086 psi | 90% | 2946 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,419 psi | 89% | 2969 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,882 psi | 86% | 2966 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,383 psi | 74% | 2920 fps | 97% |
| Accurate 4064 | <<locked>> | 88% | 55,521 psi | 89% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,028 psi | 90% | 3114 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 55,201 psi | 89% | 3051 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,434 psi | 90% | 3051 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,157 psi | 87% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,317 psi | 89% | 2972 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,361 psi | 89% | 3176 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,606 psi | 86% | 3081 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,330 psi | 86% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,766 psi | 86% | 3041 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,127 psi | 85% | 3114 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,302 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,714 psi | 70% | 2946 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,501 psi | 79% | 3130 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,230 psi | 89% | 3064 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 53,911 psi | 86% | 3035 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,809 psi | 86% | 3005 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,637 psi | 89% | 2982 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,824 psi | 86% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,621 psi | 88% | 3048 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 54,810 psi | 88% | 3104 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 55,100 psi | 88% | 3068 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 55,767 psi | 89% | 3061 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,243 psi | 85% | 3041 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,782 psi | 89% | 3097 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,376 psi | 89% | 3143 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 58% | 1906 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,447 psi | 86% | 3009 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,231 psi | 90% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,970 psi | 90% | 3038 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,448 psi | 89% | 3012 fps | 97.8% |
| IMR 4350 | <<locked>> | 96% | 54,404 psi | 87% | 3035 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,463 psi | 89% | 3038 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 56,434 psi | 90% | 3104 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 55,100 psi | 88% | 3074 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,157 psi | 87% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,390 psi | 89% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,549 psi | 87% | 2976 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 55,854 psi | 90% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,245 psi | 89% | 3035 fps | 98.8% |
| Lovex S070 | <<locked>> | 96% | 56,376 psi | 90% | 3074 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 54,027 psi | 87% | 2995 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,534 psi | 87% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,333 psi | 90% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,911 psi | 88% | 3081 fps | 96% |
| Norma MRPᴾ | <<locked>> | 100% | 48,979 psi | 79% | 3081 fps | 96.5% |
| Norma URP | <<locked>> | 96% | 54,679 psi | 88% | 3097 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 53,635 psi | 86% | 3054 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 53,388 psi | 86% | 3087 fps | 98.3% |
| Ramshot TAC | <<locked>> | 82% | 54,143 psi | 87% | 3012 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,230 psi | 87% | 3035 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 58% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,810 psi | 88% | 3031 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,244 psi | 87% | 3110 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,998 psi | 87% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,651 psi | 89% | 3133 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,694 psi | 88% | 3159 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 54,926 psi | 88% | 2979 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,505 psi | 87% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,954 psi | 87% | 3031 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 53,809 psi | 86% | 3005 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,245 psi | 89% | 3035 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,390 psi | 89% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,854 psi | 90% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,376 psi | 90% | 3074 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,550 psi | 89% | 3091 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,852 psi | 85% | 2989 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,664 psi | 86% | 3018 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,158 psi | 88% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,666 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,463 psi | 89% | 2986 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 54,752 psi | 88% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,260 psi | 90% | 3041 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,186 psi | 87% | 3028 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,069 psi | 85% | 3100 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,562 psi | 84% | 3031 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 55,521 psi | 89% | 2913 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,650 psi | 88% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,187 psi | 88% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,463 psi | 89% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,490 psi | 86% | 3038 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 54,447 psi | 87% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,301 psi | 85% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,217 psi | 90% | 3097 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,747 psi | 78% | 3031 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,403 psi | 86% | 3009 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,897 psi | 88% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,056 psi | 88% | 3107 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,392 psi | 63% | 2966 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,577 psi | 86% | 3022 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% | 52,692 psi | 84% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,484 psi | 73% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,340 psi | 76% | 2848 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 40,393 psi | 65% | 2799 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,004 psi | 69% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,432 psi | 55% | 2680 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 48,675 psi | 78% | 2936 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,379 psi | 66% | 2776 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,749 psi | 81% | 2943 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,779 psi | 83% | 2923 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,759 psi | 72% | 2976 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 50,140 psi | 80% | 3018 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,437 psi | 66% | 2802 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,280 psi | 71% | 2867 fps | 98.6% |
| Alliant Reloder-16 | 58.2 gr | 82% | 34,156 psi | 55% | 2694 fps | 95% |
| Alliant Reloder-17 | 61.2 gr | 80% | 35,998 psi | 58% | 2769 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,879 psi | 51% | 2651 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 37,188 psi | 60% | 2851 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,109 psi | 77% | 2943 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 41,220 psi | 66% | 2802 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 47,398 psi | 76% | 2887 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,185 psi | 84% | 2927 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,169 psi | 80% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,989 psi | 67% | 2808 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 44,831 psi | 72% | 2920 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 48,356 psi | 78% | 2943 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,153 psi | 79% | 2949 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,544 psi | 47% | 2530 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,455 psi | 73% | 2917 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 47,718 psi | 77% | 3002 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,629 psi | 43% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,079 psi | 75% | 2894 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 49,197 psi | 79% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,439 psi | 70% | 2812 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,919 psi | 74% | 2838 fps | 95.8% |
| IMR 4350 | <<locked>> | 92% | 47,993 psi | 77% | 2920 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,137 psi | 74% | 2864 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 35,505 psi | 57% | 2694 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 45,382 psi | 73% | 2900 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 50,749 psi | 81% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,428 psi | 78% | 2917 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,153 psi | 77% | 2864 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 43,482 psi | 70% | 2815 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 40,611 psi | 65% | 2756 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 43,801 psi | 70% | 2841 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,572 psi | 76% | 2881 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 48,211 psi | 77% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,642 psi | 70% | 2854 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 51,300 psi | 82% | 3018 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 45,774 psi | 73% | 3015 fps | 95.6% |
| Norma URP | <<locked>> | 84% | 36,970 psi | 59% | 2743 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 43,540 psi | 70% | 2871 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 40,959 psi | 66% | 2844 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 50,836 psi | 82% | 2953 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,575 psi | 81% | 2972 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 43% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,076 psi | 67% | 2785 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,210 psi | 76% | 2986 fps | 99% |
| ReloadSwiss RS 60 | 61.2 gr | 80% | 38,305 psi | 61% | 2841 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,492 psi | 59% | 2756 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,827 psi | 62% | 2828 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,735 psi | 83% | 2927 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,339 psi | 73% | 2831 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 38,899 psi | 62% | 2746 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 47,398 psi | 76% | 2887 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,611 psi | 65% | 2756 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,428 psi | 78% | 2917 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,482 psi | 70% | 2815 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 43,801 psi | 70% | 2841 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,827 psi | 64% | 2795 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,240 psi | 79% | 2927 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,181 psi | 76% | 2900 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,631 psi | 78% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,756 psi | 65% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,585 psi | 73% | 2812 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,356 psi | 78% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,950 psi | 78% | 2920 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 39,407 psi | 63% | 2749 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 28,979 psi | 46% | 2569 fps | 96.3% |
| Somchem S385 | <<locked>> | 96% | 45,934 psi | 74% | 2910 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,066 psi | 79% | 2818 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,092 psi | 72% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,643 psi | 73% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,637 psi | 60% | 2680 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 35,998 psi | 58% | 2687 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 50,923 psi | 82% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,063 psi | 71% | 2808 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,549 psi | 57% | 2687 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 32,576 psi | 52% | 2677 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,214 psi | 53% | 2598 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 51,126 psi | 82% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,991 psi | 72% | 2923 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,110 psi | 48% | 2674 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,978 psi | 75% | 2910 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 | Woodleigh HS. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,906 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 58–90 %, 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 | Woodleigh HS 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.