Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Frontier PH HPFB bullet and 92 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-17.
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% | 54,360 psi | 87% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,447 psi | 86% | 2936 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,824 psi | 88% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,738 psi | 89% | 2982 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,251 psi | 71% | 2871 fps | 96.2% |
| Accurate 4064 | <<locked>> | 88% | 53,693 psi | 86% | 2989 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,679 psi | 86% | 3068 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 53,548 psi | 86% | 3015 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 54,708 psi | 88% | 3015 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,840 psi | 90% | 3015 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,432 psi | 86% | 2943 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,330 psi | 86% | 3133 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,853 psi | 88% | 3038 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,245 psi | 89% | 3058 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,665 psi | 88% | 3130 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,985 psi | 90% | 3166 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,018 psi | 67% | 2904 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,398 psi | 76% | 3081 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,287 psi | 85% | 3022 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 55,535 psi | 89% | 3054 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,434 psi | 89% | 3018 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,954 psi | 87% | 2946 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,622 psi | 89% | 3048 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,362 psi | 90% | 3068 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 56,260 psi | 90% | 3120 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 92% | 53,330 psi | 86% | 3025 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 84% | 54,085 psi | 87% | 3022 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,607 psi | 88% | 3051 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,679 psi | 86% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,185 psi | 85% | 3094 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 57% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,245 psi | 89% | 3028 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,186 psi | 87% | 3009 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,099 psi | 87% | 2999 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,867 psi | 86% | 2972 fps | 97.3% |
| IMR 4350 | <<locked>> | 98% | 55,941 psi | 90% | 3048 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,983 psi | 87% | 2999 fps | 97.3% |
| IMR 4831 | <<locked>> | 98% | 54,070 psi | 87% | 3058 fps | 99.5% |
| IMR 4895 | <<locked>> | 86% | 53,214 psi | 85% | 3035 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 55,840 psi | 90% | 3015 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,432 psi | 86% | 2989 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,333 psi | 90% | 2992 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 53,998 psi | 87% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,447 psi | 86% | 2992 fps | 98.4% |
| Lovex S070 | <<locked>> | 96% | 54,404 psi | 87% | 3028 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 55,753 psi | 89% | 3012 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,260 psi | 90% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,491 psi | 87% | 3045 fps | 99.9% |
| Norma URP | <<locked>> | 98% | 56,101 psi | 90% | 3110 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 55,303 psi | 89% | 3074 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,926 psi | 88% | 3104 fps | 98.4% |
| Ramshot TAC | <<locked>> | 84% | 56,115 psi | 90% | 3031 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,072 psi | 90% | 3054 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,187 psi | 58% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,997 psi | 85% | 2989 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,970 psi | 90% | 3130 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,564 psi | 89% | 3166 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,301 psi | 85% | 3087 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,721 psi | 85% | 3114 fps | 99% |
| Rottweil R 901 | <<locked>> | 82% | 53,301 psi | 85% | 2943 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,275 psi | 90% | 3009 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,405 psi | 89% | 3045 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,434 psi | 89% | 3018 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,447 psi | 86% | 2992 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,432 psi | 86% | 2989 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,998 psi | 87% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,404 psi | 87% | 3028 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,606 psi | 86% | 3051 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,723 psi | 88% | 3012 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,506 psi | 89% | 3035 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,621 psi | 86% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,114 psi | 87% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,592 psi | 86% | 2943 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 53,142 psi | 85% | 2894 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,331 psi | 87% | 3002 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 55,593 psi | 89% | 3041 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,360 psi | 87% | 3114 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 2986 fps | 96% |
| Vihtavuori N133 | <<locked>> | 84% | 53,969 psi | 87% | 2884 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,260 psi | 90% | 2976 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,519 psi | 86% | 2940 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,534 psi | 86% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,129 psi | 88% | 3051 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 52,794 psi | 85% | 2959 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,143 psi | 88% | 2986 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,027 psi | 87% | 3051 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,369 psi | 74% | 2982 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,172 psi | 88% | 3028 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,924 psi | 85% | 3009 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,968 psi | 85% | 3064 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,666 psi | 60% | 2907 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,477 psi | 89% | 3045 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% | 50,995 psi | 82% | 2861 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,048 psi | 71% | 2785 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,401 psi | 82% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,965 psi | 79% | 2867 fps | 95.4% |
| Accurate 3100 | <<locked>> | 98% | 41,321 psi | 66% | 2812 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 41,626 psi | 67% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,288 psi | 57% | 2700 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,210 psi | 76% | 2900 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 40,030 psi | 64% | 2733 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,298 psi | 79% | 2907 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 50,169 psi | 80% | 2894 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,265 psi | 69% | 2933 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,001 psi | 64% | 2762 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,873 psi | 69% | 2831 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,230 psi | 56% | 2713 fps | 95.2% |
| Alliant Reloder-17 | 59.1 gr | 80% | 34,519 psi | 55% | 2720 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 32,532 psi | 52% | 2664 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,087 psi | 61% | 2867 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,644 psi | 75% | 2904 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 39,769 psi | 64% | 2766 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 49,023 psi | 79% | 2907 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,734 psi | 81% | 2894 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,573 psi | 78% | 2930 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,480 psi | 65% | 2769 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 46,137 psi | 74% | 2936 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 90% | 49,835 psi | 80% | 2959 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,674 psi | 76% | 2913 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,342 psi | 49% | 2546 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,816 psi | 70% | 2881 fps | 99.4% |
| Hodgdon Superformance | 70.3 gr | 90% | 45,876 psi | 74% | 2953 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,585 psi | 43% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,614 psi | 73% | 2858 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 47,601 psi | 76% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,032 psi | 67% | 2772 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,454 psi | 71% | 2795 fps | 95.1% |
| IMR 4350 | <<locked>> | 92% | 46,325 psi | 74% | 2877 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,831 psi | 72% | 2828 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 36,434 psi | 58% | 2710 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 43,932 psi | 70% | 2864 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 49,298 psi | 79% | 2907 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,702 psi | 75% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,978 psi | 75% | 2831 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 42,206 psi | 68% | 2779 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 39,247 psi | 63% | 2713 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 45,034 psi | 72% | 2858 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 46,282 psi | 74% | 2851 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,659 psi | 75% | 2858 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,235 psi | 68% | 2815 fps | 98.5% |
| Norma URP | <<locked>> | 84% | 35,505 psi | 57% | 2703 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 42,047 psi | 67% | 2831 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 42,148 psi | 68% | 2861 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 49,255 psi | 79% | 2913 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,066 psi | 79% | 2936 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 43% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,569 psi | 70% | 2808 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,397 psi | 73% | 2940 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,738 psi | 59% | 2795 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,521 psi | 60% | 2776 fps | 95.7% |
| ReloadSwiss RS 70 | 66.1 gr | 88% | 40,030 psi | 64% | 2848 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 50,270 psi | 81% | 2894 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,034 psi | 71% | 2799 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 37,463 psi | 60% | 2707 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 49,023 psi | 79% | 2907 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,247 psi | 63% | 2713 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,702 psi | 75% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,206 psi | 68% | 2779 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 45,034 psi | 72% | 2858 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,363 psi | 62% | 2756 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,747 psi | 77% | 2887 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,629 psi | 73% | 2864 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,326 psi | 76% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,552 psi | 63% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,106 psi | 71% | 2769 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,123 psi | 76% | 2799 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,485 psi | 76% | 2884 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 38,203 psi | 61% | 2713 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 27,876 psi | 45% | 2526 fps | 95.5% |
| Somchem S385 | <<locked>> | 98% | 47,094 psi | 76% | 2923 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 47,718 psi | 77% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,569 psi | 70% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,193 psi | 71% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,347 psi | 58% | 2644 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 36,956 psi | 59% | 2703 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 49,472 psi | 79% | 2904 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 42,569 psi | 68% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,463 psi | 58% | 2703 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 33,214 psi | 53% | 2690 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,169 psi | 52% | 2562 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 49,414 psi | 79% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 46,311 psi | 74% | 2940 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,879 psi | 50% | 2690 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,426 psi | 73% | 2871 fps | 99.4% |
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 92 powders for .300 H&H Mag. loaded with the .308 | 150gr | Frontier PH HPFB. Alliant Reloder-17 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,166 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17 rank at the top here: for .300 H&H Mag. with the .308 | 150gr | Frontier PH HPFB 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.