Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 180gr | Woodleigh PP SN 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, Alliant Reloder-26 and Accurate High Country.
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% | 54,911 psi | 88% | 2703 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,072 psi | 90% | 2772 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,693 psi | 86% | 2812 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 55,347 psi | 89% | 2759 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,999 psi | 90% | 2864 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 54,795 psi | 88% | 2953 fps | 97.3% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2953 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 55,303 psi | 89% | 2789 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,127 psi | 85% | 2844 fps | 97.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 2894 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,592 psi | 88% | 2910 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,287 psi | 85% | 2844 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,101 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,362 psi | 90% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,434 psi | 90% | 2917 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,186 psi | 87% | 2890 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,970 psi | 90% | 2890 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,185 psi | 85% | 2890 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2828 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,874 psi | 70% | 2753 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,882 psi | 86% | 2966 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,834 psi | 78% | 2815 fps | 97% |
| Bofors RP3 | <<locked>> | 84% | 53,330 psi | 86% | 2776 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,185 psi | 85% | 2890 fps | 98% |
| Bofors RP7 | <<locked>> | 90% | 56,376 psi | 90% | 2815 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 53,809 psi | 86% | 2792 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,375 psi | 87% | 2861 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 54,259 psi | 87% | 2818 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 98% | 54,708 psi | 88% | 2844 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,432 psi | 86% | 2825 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,345 psi | 86% | 2792 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,795 psi | 88% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,433 psi | 87% | 2894 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 58% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,550 psi | 89% | 2789 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,708 psi | 88% | 2769 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,853 psi | 86% | 2753 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 53,737 psi | 86% | 2792 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,578 psi | 88% | 2789 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 56,362 psi | 90% | 2854 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,128 psi | 87% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,347 psi | 90% | 2835 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,909 psi | 83% | 2867 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 56,376 psi | 90% | 2759 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,897 psi | 88% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,447 psi | 87% | 2782 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 55,898 psi | 90% | 2828 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,570 psi | 71% | 2664 fps | 98.3% |
| Norma 201 | <<locked>> | 82% | 56,318 psi | 90% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,651 psi | 89% | 2818 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,375 psi | 87% | 2844 fps | 97.8% |
| Norma MRP | <<locked>> | 98% | 52,881 psi | 85% | 2920 fps | 99% |
| Norma URP | <<locked>> | 92% | 54,665 psi | 88% | 2848 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,837 psi | 85% | 2792 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,996 psi | 83% | 2877 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 92% | 53,287 psi | 85% | 2844 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,470 psi | 75% | 2756 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,708 psi | 86% | 2779 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,722 psi | 86% | 2881 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,680 psi | 89% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,056 psi | 87% | 2910 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,815 psi | 69% | 2769 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 53,505 psi | 86% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,432 psi | 86% | 2772 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,824 psi | 88% | 2818 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 98% | 55,274 psi | 89% | 2877 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 90% | 56,376 psi | 90% | 2815 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,447 psi | 87% | 2782 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 54,897 psi | 88% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,898 psi | 90% | 2828 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,998 psi | 88% | 2831 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,869 psi | 90% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,650 psi | 88% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,230 psi | 87% | 2740 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,781 psi | 88% | 2874 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 53,577 psi | 86% | 2772 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,693 psi | 86% | 2848 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,985 psi | 90% | 2854 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 53,969 psi | 87% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,099 psi | 87% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,650 psi | 88% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,055 psi | 85% | 2789 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,750 psi | 83% | 2776 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 55,811 psi | 89% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,811 psi | 89% | 2848 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,420 psi | 90% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,258 psi | 85% | 2907 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,562 psi | 84% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,636 psi | 88% | 2861 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,469 psi | 73% | 2887 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,159 psi | 90% | 2812 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,231 psi | 90% | 2851 fps | 98.2% |
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% | 51,503 psi | 83% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,153 psi | 79% | 2661 fps | 97.7% |
| Accurate 3100 | <<locked>> | 86% | 33,359 psi | 53% | 2428 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 48,776 psi | 78% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,072 psi | 59% | 2526 fps | 98% |
| Accurate High Country | 69.9 gr | 94% | 47,572 psi | 76% | 2828 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 98% | 51,764 psi | 83% | 2884 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 45,876 psi | 74% | 2635 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,845 psi | 70% | 2677 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 96% | 47,732 psi | 77% | 2776 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,676 psi | 81% | 2848 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,816 psi | 70% | 2674 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,485 psi | 75% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,559 psi | 79% | 2726 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,143 psi | 58% | 2536 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,944 psi | 66% | 2661 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,308 psi | 69% | 2667 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,598 psi | 70% | 2720 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,556 psi | 43% | 2297 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,026 psi | 55% | 2520 fps | 95.8% |
| Alliant Reloder-26 | 64.4 gr | 84% | 32,489 psi | 52% | 2523 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 42,989 psi | 69% | 2703 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 46,688 psi | 75% | 2671 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,598 psi | 70% | 2720 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 41,278 psi | 66% | 2546 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 47,224 psi | 76% | 2684 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 39,015 psi | 63% | 2572 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,916 psi | 67% | 2595 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 96% | 51,010 psi | 82% | 2782 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,082 psi | 80% | 2766 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,794 psi | 54% | 2438 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,488 psi | 83% | 2776 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 37,942 psi | 61% | 2579 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 44% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,214 psi | 84% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,269 psi | 77% | 2667 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,676 psi | 81% | 2700 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 39,247 psi | 63% | 2526 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,525 psi | 68% | 2575 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 35,621 psi | 57% | 2480 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 50,821 psi | 81% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,574 psi | 79% | 2723 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 98% | 48,399 psi | 78% | 2802 fps | 95.3% |
| Lovex S060 | <<locked>> | 80% | 53,069 psi | 85% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,675 psi | 78% | 2671 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,176 psi | 64% | 2530 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 38,377 psi | 62% | 2507 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 34,476 psi | 55% | 2454 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,939 psi | 85% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,950 psi | 78% | 2717 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,411 psi | 71% | 2667 fps | 95.5% |
| Norma MRP | <<locked>> | 88% | 37,333 psi | 60% | 2612 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 36,927 psi | 59% | 2526 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 49,153 psi | 79% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,631 psi | 78% | 2818 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,824 psi | 57% | 2510 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 40,190 psi | 64% | 2631 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 44% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,108 psi | 76% | 2667 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,497 psi | 70% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,724 psi | 59% | 2543 fps | 97.6% |
| ReloadSwiss RS 70 | 60.7 gr | 80% | 35,737 psi | 57% | 2549 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,929 psi | 64% | 2700 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 50,444 psi | 81% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,063 psi | 71% | 2621 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 48,327 psi | 77% | 2710 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 42,525 psi | 68% | 2654 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 41,278 psi | 66% | 2546 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,176 psi | 64% | 2530 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 48,675 psi | 78% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,377 psi | 62% | 2507 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,165 psi | 72% | 2674 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,591 psi | 84% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,339 psi | 73% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,218 psi | 63% | 2470 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,134 psi | 68% | 2648 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 44,411 psi | 71% | 2621 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 33,359 psi | 53% | 2480 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 40,422 psi | 65% | 2582 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 50,604 psi | 81% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,807 psi | 81% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,337 psi | 68% | 2552 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,290 psi | 61% | 2523 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 39,755 psi | 64% | 2559 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 49,182 psi | 79% | 2654 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,855 psi | 61% | 2526 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,153 psi | 47% | 2372 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 96% | 49,734 psi | 80% | 2844 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,536 psi | 60% | 2497 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,204 psi | 63% | 2575 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,932 psi | 40% | 2313 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,547 psi | 84% | 2759 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,627 psi | 68% | 2621 fps | 95.1% |
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 | 180gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,966 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,966 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 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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, Accurate High Country rank at the top here: for .300 H&H Mag. with the .308 | 180gr | Woodleigh PP SN 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.