Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 155gr | Brenneke TAG bullet and 94 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% | 54,505 psi | 87% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,214 psi | 85% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,230 psi | 89% | 2972 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,202 psi | 90% | 2959 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,483 psi | 71% | 2848 fps | 96.7% |
| Accurate 4064 | <<locked>> | 88% | 53,519 psi | 86% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,143 psi | 87% | 3041 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 54,056 psi | 87% | 2986 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 55,085 psi | 88% | 2986 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,765 psi | 85% | 2933 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,838 psi | 86% | 2907 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,085 psi | 87% | 3110 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,405 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,796 psi | 89% | 3031 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,390 psi | 89% | 3107 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,852 psi | 85% | 3081 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,337 psi | 68% | 2881 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,863 psi | 77% | 3061 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,896 psi | 86% | 2999 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 55,985 psi | 90% | 3025 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,854 psi | 90% | 2999 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,505 psi | 87% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,912 psi | 90% | 3015 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,084 psi | 85% | 2982 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 94% | 53,374 psi | 86% | 3038 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 53,679 psi | 86% | 2999 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,607 psi | 88% | 2995 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,376 psi | 89% | 3028 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,389 psi | 87% | 3031 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,795 psi | 86% | 3074 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,636 psi | 57% | 1864 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,854 psi | 90% | 2999 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,868 psi | 88% | 2979 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,665 psi | 88% | 2972 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,346 psi | 87% | 2949 fps | 97.8% |
| IMR 4350 | <<locked>> | 96% | 53,098 psi | 85% | 2969 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,259 psi | 87% | 2972 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 54,665 psi | 88% | 3031 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 53,722 psi | 86% | 3009 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 52,765 psi | 85% | 2933 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,824 psi | 86% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,229 psi | 85% | 2910 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 54,375 psi | 87% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,853 psi | 86% | 2966 fps | 98.8% |
| Lovex S070 | <<locked>> | 96% | 54,824 psi | 88% | 3002 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 55,840 psi | 90% | 2976 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,272 psi | 85% | 2930 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,042 psi | 88% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,693 psi | 86% | 3018 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,587 psi | 76% | 3012 fps | 96.4% |
| Norma URP | <<locked>> | 96% | 53,142 psi | 85% | 3028 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 55,956 psi | 90% | 3048 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,579 psi | 89% | 3081 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 53,011 psi | 85% | 2949 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,420 psi | 90% | 3025 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 58% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,476 psi | 86% | 2963 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,779 psi | 85% | 3045 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,391 psi | 90% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,983 psi | 87% | 3064 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,301 psi | 85% | 3094 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 53,214 psi | 85% | 2907 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,127 psi | 85% | 2927 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,854 psi | 90% | 3015 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,854 psi | 90% | 2999 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,853 psi | 86% | 2966 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,824 psi | 86% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,375 psi | 87% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,824 psi | 88% | 3002 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,259 psi | 87% | 3025 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,172 psi | 88% | 2986 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,072 psi | 90% | 3009 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,882 psi | 86% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,404 psi | 87% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,012 psi | 87% | 2920 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 53,476 psi | 86% | 2864 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,911 psi | 88% | 2976 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,043 psi | 90% | 3015 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,187 psi | 88% | 3087 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2963 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 54,331 psi | 87% | 2851 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,229 psi | 85% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,809 psi | 86% | 2910 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,012 psi | 87% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,753 psi | 89% | 3028 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 53,258 psi | 85% | 2933 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,434 psi | 89% | 2953 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,563 psi | 87% | 3028 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,847 psi | 75% | 2959 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,767 psi | 89% | 3002 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,548 psi | 86% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,621 psi | 86% | 3041 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,797 psi | 61% | 2887 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,028 psi | 90% | 3018 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% | 51,314 psi | 82% | 2831 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,627 psi | 70% | 2746 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,474 psi | 83% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,064 psi | 74% | 2785 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 38,653 psi | 62% | 2726 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 41,321 psi | 66% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,331 psi | 57% | 2671 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 47,369 psi | 76% | 2871 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 40,335 psi | 65% | 2713 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,516 psi | 79% | 2877 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,517 psi | 81% | 2861 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,511 psi | 70% | 2910 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,059 psi | 64% | 2733 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,960 psi | 69% | 2799 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,259 psi | 57% | 2687 fps | 95.8% |
| Alliant Reloder-17 | 59.5 gr | 80% | 34,722 psi | 56% | 2700 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,560 psi | 49% | 2582 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,636 psi | 57% | 2776 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,905 psi | 75% | 2877 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,697 psi | 64% | 2733 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 46,093 psi | 74% | 2822 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,213 psi | 82% | 2867 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,733 psi | 78% | 2900 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,654 psi | 65% | 2743 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 88% | 43,424 psi | 70% | 2851 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 50,386 psi | 81% | 2940 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,834 psi | 77% | 2881 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,255 psi | 49% | 2520 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,077 psi | 71% | 2851 fps | 99.6% |
| Hodgdon Superformance | 70.7 gr | 90% | 46,282 psi | 74% | 2933 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,455 psi | 42% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,890 psi | 74% | 2831 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 47,892 psi | 77% | 2874 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,380 psi | 68% | 2749 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,788 psi | 72% | 2772 fps | 95.7% |
| IMR 4350 | <<locked>> | 92% | 46,760 psi | 75% | 2854 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,991 psi | 72% | 2802 fps | 95.6% |
| IMR 4831 | <<locked>> | 84% | 34,229 psi | 55% | 2628 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 44,034 psi | 71% | 2831 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,516 psi | 79% | 2877 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,731 psi | 75% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,166 psi | 76% | 2805 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,235 psi | 68% | 2749 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,363 psi | 63% | 2690 fps | 95.6% |
| Lovex S070 | <<locked>> | 88% | 42,467 psi | 68% | 2776 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,253 psi | 74% | 2818 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,789 psi | 75% | 2825 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,322 psi | 68% | 2789 fps | 98.8% |
| Norma 204 | <<locked>> | 94% | 50,038 psi | 80% | 2953 fps | 95% |
| Norma MRP | <<locked>> | 98% | 44,295 psi | 71% | 2943 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 35,549 psi | 57% | 2674 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 42,221 psi | 68% | 2805 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 39,639 psi | 64% | 2776 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,676 psi | 80% | 2890 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,284 psi | 79% | 2907 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,861 psi | 43% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,944 psi | 66% | 2723 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,905 psi | 74% | 2917 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,985 psi | 59% | 2772 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,143 psi | 56% | 2690 fps | 95.2% |
| ReloadSwiss RS 70 | 65 gr | 86% | 37,623 psi | 60% | 2762 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 50,140 psi | 80% | 2858 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,990 psi | 71% | 2766 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,347 psi | 60% | 2674 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 46,093 psi | 74% | 2822 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,363 psi | 63% | 2690 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,731 psi | 75% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,235 psi | 68% | 2749 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,467 psi | 68% | 2776 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,624 psi | 62% | 2733 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,037 psi | 77% | 2864 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,035 psi | 74% | 2838 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,471 psi | 76% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,639 psi | 64% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,106 psi | 71% | 2743 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 47,195 psi | 76% | 2766 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,703 psi | 76% | 2854 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 38,145 psi | 61% | 2684 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 27,659 psi | 44% | 2497 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 47,471 psi | 76% | 2900 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 47,950 psi | 77% | 2756 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,700 psi | 70% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,338 psi | 71% | 2756 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,318 psi | 58% | 2615 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 34,635 psi | 56% | 2618 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 49,690 psi | 80% | 2874 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,844 psi | 69% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,637 psi | 59% | 2680 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 90% | 33,344 psi | 53% | 2664 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,111 psi | 51% | 2536 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 49,937 psi | 80% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,642 psi | 70% | 2854 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,906 psi | 46% | 2602 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,600 psi | 73% | 2841 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 | 155gr | Brenneke TAG. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,140 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 155.0 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 | 155gr | Brenneke TAG 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.