Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 156gr | Reichenbeg HDB Ogival bullet and 93 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% | 54,317 psi | 87% | 2864 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,069 psi | 85% | 2884 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,853 psi | 88% | 2953 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,724 psi | 89% | 2940 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,121 psi | 71% | 2828 fps | 96.6% |
| Accurate 4064 | <<locked>> | 88% | 53,156 psi | 85% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,693 psi | 86% | 3022 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 53,679 psi | 86% | 2966 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 54,737 psi | 88% | 2969 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,086 psi | 90% | 2972 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,592 psi | 86% | 2890 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,534 psi | 86% | 3087 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,853 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,492 psi | 89% | 3015 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,911 psi | 88% | 3087 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,347 psi | 90% | 3120 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,974 psi | 67% | 2861 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,355 psi | 76% | 3035 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,403 psi | 86% | 2979 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 55,680 psi | 89% | 3009 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,651 psi | 89% | 2979 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,114 psi | 87% | 2900 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,579 psi | 89% | 2995 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,376 psi | 90% | 3018 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 52,924 psi | 85% | 3018 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 92% | 53,476 psi | 86% | 2982 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 84% | 54,230 psi | 87% | 2979 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,882 psi | 88% | 3009 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,070 psi | 87% | 3012 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,258 psi | 85% | 3051 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 57% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,521 psi | 89% | 2982 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,375 psi | 87% | 2959 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,331 psi | 87% | 2953 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,085 psi | 87% | 2930 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 56,144 psi | 90% | 3005 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,041 psi | 87% | 2956 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 54,215 psi | 87% | 3012 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 53,388 psi | 86% | 2992 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 56,086 psi | 90% | 2972 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,490 psi | 86% | 2940 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,333 psi | 90% | 2946 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,027 psi | 87% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,330 psi | 86% | 2946 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 54,375 psi | 87% | 2982 fps | 98% |
| Norma 201 | <<locked>> | 86% | 55,724 psi | 89% | 2963 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,405 psi | 90% | 2963 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,679 psi | 88% | 2999 fps | 100% |
| Norma MRPᴾ | <<locked>> | 100% | 47,036 psi | 75% | 2989 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 56,289 psi | 90% | 3064 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 55,492 psi | 89% | 3028 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,216 psi | 89% | 3064 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 56,405 psi | 90% | 2989 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,144 psi | 90% | 3009 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 58% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,997 psi | 85% | 2943 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,101 psi | 90% | 3081 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,898 psi | 90% | 3120 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,563 psi | 86% | 3045 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,939 psi | 85% | 3074 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 56,231 psi | 90% | 2940 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,275 psi | 90% | 2963 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,550 psi | 89% | 2999 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,651 psi | 89% | 2979 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,330 psi | 86% | 2946 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,490 psi | 86% | 2940 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,027 psi | 87% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,375 psi | 87% | 2982 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,751 psi | 86% | 3005 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,882 psi | 88% | 2966 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,550 psi | 89% | 2989 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,737 psi | 86% | 2851 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,070 psi | 87% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,519 psi | 86% | 2897 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 53,142 psi | 85% | 2848 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,404 psi | 87% | 2956 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,767 psi | 89% | 2995 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,723 psi | 88% | 3068 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,357 psi | 81% | 2940 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 84% | 54,143 psi | 87% | 2838 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,159 psi | 90% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,461 psi | 86% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,766 psi | 86% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,303 psi | 89% | 3012 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 52,924 psi | 85% | 2913 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,129 psi | 88% | 2936 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,143 psi | 87% | 3009 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,398 psi | 74% | 2936 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,463 psi | 89% | 2986 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,939 psi | 85% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,171 psi | 85% | 3022 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,536 psi | 60% | 2867 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,506 psi | 89% | 2999 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% | 50,836 psi | 82% | 2812 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,178 psi | 69% | 2726 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,140 psi | 82% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,774 psi | 73% | 2766 fps | 95% |
| Accurate 3100 | <<locked>> | 98% | 41,075 psi | 66% | 2769 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 40,901 psi | 66% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,998 psi | 56% | 2654 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 47,166 psi | 76% | 2854 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,987 psi | 64% | 2690 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,342 psi | 79% | 2864 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,995 psi | 80% | 2841 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,178 psi | 69% | 2890 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,682 psi | 64% | 2713 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,786 psi | 69% | 2785 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,983 psi | 56% | 2671 fps | 95.7% |
| Alliant Reloder-17 | 58.8 gr | 80% | 34,432 psi | 55% | 2684 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,327 psi | 49% | 2562 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,346 psi | 57% | 2756 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,601 psi | 75% | 2858 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,523 psi | 63% | 2720 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 45,803 psi | 73% | 2805 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,821 psi | 81% | 2848 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,385 psi | 78% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,321 psi | 65% | 2723 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 43,149 psi | 69% | 2831 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 90% | 50,125 psi | 80% | 2923 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,674 psi | 76% | 2864 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,110 psi | 48% | 2503 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,932 psi | 70% | 2835 fps | 99.6% |
| Hodgdon Superformance | 69.9 gr | 90% | 45,963 psi | 74% | 2913 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,469 psi | 42% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,716 psi | 73% | 2815 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 47,630 psi | 76% | 2854 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,959 psi | 67% | 2730 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,469 psi | 71% | 2753 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 46,340 psi | 74% | 2835 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,701 psi | 72% | 2785 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 33,910 psi | 54% | 2608 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 43,874 psi | 70% | 2818 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,342 psi | 79% | 2864 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,572 psi | 75% | 2828 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,789 psi | 75% | 2785 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 41,829 psi | 67% | 2730 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,044 psi | 63% | 2671 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 42,163 psi | 68% | 2756 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 45,847 psi | 74% | 2799 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,398 psi | 74% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,119 psi | 68% | 2772 fps | 98.8% |
| Norma MRP | <<locked>> | 98% | 43,990 psi | 71% | 2927 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 35,230 psi | 56% | 2654 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 41,901 psi | 67% | 2785 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 39,436 psi | 63% | 2759 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,168 psi | 79% | 2867 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,965 psi | 79% | 2890 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,876 psi | 43% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,640 psi | 65% | 2707 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,513 psi | 73% | 2897 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,680 psi | 59% | 2753 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,853 psi | 56% | 2671 fps | 95.1% |
| ReloadSwiss RS 70 | 64.2 gr | 86% | 37,231 psi | 60% | 2740 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 49,908 psi | 80% | 2841 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,801 psi | 70% | 2749 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,159 psi | 60% | 2661 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 45,803 psi | 73% | 2805 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,044 psi | 63% | 2671 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,572 psi | 75% | 2828 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,829 psi | 67% | 2730 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,163 psi | 68% | 2756 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,334 psi | 61% | 2713 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,485 psi | 76% | 2841 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,672 psi | 73% | 2818 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,224 psi | 76% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,436 psi | 63% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,888 psi | 70% | 2726 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 46,775 psi | 75% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,398 psi | 76% | 2838 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,782 psi | 61% | 2664 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 27,543 psi | 44% | 2480 fps | 95.8% |
| Somchem S385 | <<locked>> | 98% | 47,108 psi | 76% | 2881 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 47,688 psi | 76% | 2743 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,424 psi | 70% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,164 psi | 71% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,129 psi | 58% | 2602 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 34,490 psi | 55% | 2605 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,516 psi | 79% | 2858 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,482 psi | 68% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,201 psi | 58% | 2657 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 32,880 psi | 53% | 2641 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,865 psi | 51% | 2516 fps | 96.6% |
| Winchester 748 | <<locked>> | 80% | 49,545 psi | 79% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,149 psi | 69% | 2831 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,545 psi | 49% | 2651 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,281 psi | 73% | 2825 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 93 powders for .300 H&H Mag. loaded with the .308 | 156gr | Reichenbeg HDB Ogival. Alliant Reloder-17 delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,120 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 156.0 gr projectile in 0.308" calls for a 1:12.5 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 | 156gr | Reichenbeg HDB Ogival 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.