Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 180gr | Sako SuperHammerhead 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, Alliant Reloder-26 and Hodgdon Superformance.
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.
A valid access license is required to use the Personalized Load Calculator.
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 2495 | <<locked>> | 82% | 54,070 psi | 87% | 2690 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,434 psi | 89% | 2759 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,837 psi | 85% | 2799 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 54,520 psi | 87% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,984 psi | 88% | 2848 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,563 psi | 87% | 2772 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,072 psi | 90% | 2890 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,621 psi | 86% | 2877 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,795 psi | 86% | 2894 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,173 psi | 90% | 2887 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,332 psi | 89% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,593 psi | 89% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,738 psi | 89% | 2904 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,461 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,376 psi | 89% | 2877 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,373 psi | 84% | 2874 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,443 psi | 79% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,207 psi | 69% | 2736 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,808 psi | 85% | 2946 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,080 psi | 77% | 2799 fps | 96.7% |
| Bofors RP3 | <<locked>> | 86% | 56,304 psi | 90% | 2815 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,373 psi | 84% | 2874 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 55,724 psi | 89% | 2799 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 53,084 psi | 85% | 2779 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,693 psi | 86% | 2844 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 53,606 psi | 86% | 2802 fps | 98% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,289 psi | 90% | 2864 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,985 psi | 90% | 2825 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,317 psi | 87% | 2815 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,577 psi | 86% | 2877 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 58% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,042 psi | 88% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,201 psi | 87% | 2759 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,388 psi | 86% | 2740 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 53,127 psi | 85% | 2779 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,925 psi | 86% | 2776 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 55,463 psi | 89% | 2838 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,577 psi | 86% | 2795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,564 psi | 89% | 2818 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,169 psi | 82% | 2848 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 55,637 psi | 89% | 2743 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,346 psi | 87% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,041 psi | 87% | 2772 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,013 psi | 88% | 2812 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,772 psi | 70% | 2648 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 55,521 psi | 89% | 2762 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,882 psi | 88% | 2805 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,505 psi | 86% | 2825 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 55,666 psi | 89% | 2959 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 53,722 psi | 86% | 2831 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,753 psi | 89% | 2831 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,300 psi | 82% | 2861 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 56,115 psi | 90% | 2887 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,788 psi | 73% | 2740 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 59% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,098 psi | 85% | 2762 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,910 psi | 85% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,781 psi | 88% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,490 psi | 86% | 2897 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,032 psi | 67% | 2749 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,362 psi | 90% | 2762 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,173 psi | 90% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,244 psi | 87% | 2805 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 98% | 54,404 psi | 87% | 2861 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 55,724 psi | 89% | 2799 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,041 psi | 87% | 2772 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 54,346 psi | 87% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,013 psi | 88% | 2812 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,288 psi | 87% | 2818 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,419 psi | 89% | 2792 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,911 psi | 86% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,635 psi | 86% | 2726 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,911 psi | 86% | 2854 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 56,057 psi | 90% | 2690 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,275 psi | 90% | 2805 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,086 psi | 90% | 2802 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 52,953 psi | 85% | 2835 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,158 psi | 88% | 2838 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 53,345 psi | 86% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,577 psi | 86% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,925 psi | 86% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,854 psi | 90% | 2825 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,981 psi | 82% | 2759 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 55,085 psi | 88% | 2736 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,911 psi | 88% | 2831 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2890 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2949 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,666 psi | 89% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,954 psi | 87% | 2848 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,773 psi | 72% | 2871 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,405 psi | 89% | 2799 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2835 fps | 98% |
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 2495 | <<locked>> | 80% | 50,879 psi | 82% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,501 psi | 78% | 2648 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 35,056 psi | 56% | 2467 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 48,182 psi | 77% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,535 psi | 59% | 2516 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 45,368 psi | 73% | 2621 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,236 psi | 69% | 2661 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 50,183 psi | 80% | 2815 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,125 psi | 80% | 2835 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,250 psi | 69% | 2661 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,948 psi | 74% | 2651 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,037 psi | 79% | 2717 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,679 psi | 57% | 2523 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,263 psi | 65% | 2644 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,757 psi | 69% | 2651 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,018 psi | 69% | 2703 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,208 psi | 42% | 2280 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,591 psi | 54% | 2507 fps | 95.5% |
| Alliant Reloder-26 | 63.5 gr | 84% | 31,836 psi | 51% | 2503 fps | 95.6% |
| Bofors RP15 | <<locked>> | 96% | 42,235 psi | 68% | 2684 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 46,122 psi | 74% | 2657 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,018 psi | 69% | 2703 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 40,785 psi | 65% | 2533 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,514 psi | 75% | 2667 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,566 psi | 62% | 2559 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,466 psi | 66% | 2582 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,663 psi | 84% | 2808 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,315 psi | 53% | 2421 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,705 psi | 81% | 2759 fps | 100% |
| Hodgdon Superformance | 64 gr | 82% | 40,234 psi | 65% | 2628 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 44% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,706 psi | 83% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,732 psi | 77% | 2654 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,951 psi | 80% | 2684 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 38,812 psi | 62% | 2513 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,061 psi | 67% | 2559 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 35,128 psi | 56% | 2467 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 50,285 psi | 81% | 2743 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,228 psi | 84% | 2762 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 47,906 psi | 77% | 2789 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 52,547 psi | 84% | 2697 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,124 psi | 77% | 2657 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,726 psi | 64% | 2516 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 37,942 psi | 61% | 2493 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 33,895 psi | 54% | 2441 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 52,388 psi | 84% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,385 psi | 78% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,801 psi | 70% | 2654 fps | 95.2% |
| Norma MRP | <<locked>> | 90% | 39,494 psi | 63% | 2661 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 36,405 psi | 58% | 2510 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 48,704 psi | 78% | 2726 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,892 psi | 77% | 2802 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 35,201 psi | 56% | 2493 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 42,554 psi | 68% | 2677 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 44% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,659 psi | 75% | 2654 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,801 psi | 69% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,230 psi | 58% | 2530 fps | 97.4% |
| ReloadSwiss RS 70 | 60 gr | 80% | 35,360 psi | 57% | 2536 fps | 96.7% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,233 psi | 63% | 2680 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 49,908 psi | 80% | 2667 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,497 psi | 70% | 2608 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,732 psi | 77% | 2694 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 41,742 psi | 67% | 2635 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,785 psi | 65% | 2533 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,726 psi | 64% | 2516 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 48,124 psi | 77% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,942 psi | 61% | 2493 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,498 psi | 71% | 2657 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,866 psi | 83% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,802 psi | 72% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,769 psi | 62% | 2457 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,164 psi | 71% | 2684 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 52,939 psi | 85% | 2648 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,888 psi | 70% | 2608 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,533 psi | 84% | 2743 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 32,880 psi | 53% | 2467 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 39,842 psi | 64% | 2566 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 49,995 psi | 80% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,256 psi | 81% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,858 psi | 67% | 2539 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,782 psi | 61% | 2510 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 41,684 psi | 67% | 2595 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 48,472 psi | 78% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,231 psi | 60% | 2510 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 28,660 psi | 46% | 2356 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 48,994 psi | 79% | 2828 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,985 psi | 59% | 2484 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,566 psi | 62% | 2559 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,223 psi | 42% | 2359 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,054 psi | 83% | 2749 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,020 psi | 72% | 2661 fps | 95.7% |
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 | 180gr | Sako SuperHammerhead. Norma MRP delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,959 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 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .300 H&H Mag. with the .308 | 180gr | Sako SuperHammerhead 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.