Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 180gr | Remington PSP Core-Lokt 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% | 54,824 psi | 88% | 2703 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,999 psi | 90% | 2772 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,592 psi | 86% | 2812 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 55,201 psi | 89% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,869 psi | 90% | 2864 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 54,708 psi | 88% | 2949 fps | 97.3% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,709 psi | 89% | 2949 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 55,187 psi | 88% | 2785 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,272 psi | 85% | 2848 fps | 97.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2897 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,462 psi | 87% | 2907 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,417 psi | 86% | 2848 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,970 psi | 90% | 2808 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,304 psi | 90% | 2831 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,113 psi | 85% | 2864 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,085 psi | 87% | 2887 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,101 psi | 90% | 2894 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,287 psi | 85% | 2894 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,401 psi | 81% | 2831 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,801 psi | 70% | 2749 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,070 psi | 87% | 2969 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2818 fps | 97% |
| Bofors RP3 | <<locked>> | 84% | 53,476 psi | 86% | 2779 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,287 psi | 85% | 2894 fps | 98% |
| Bofors RP7 | <<locked>> | 90% | 56,275 psi | 90% | 2812 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 53,737 psi | 86% | 2792 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,505 psi | 87% | 2861 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 54,404 psi | 87% | 2822 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 98% | 54,621 psi | 88% | 2844 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,577 psi | 86% | 2825 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,505 psi | 86% | 2792 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,984 psi | 88% | 2828 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,578 psi | 88% | 2897 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 58% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,709 psi | 89% | 2792 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,868 psi | 88% | 2772 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,983 psi | 87% | 2756 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 53,867 psi | 86% | 2795 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,462 psi | 87% | 2789 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 56,289 psi | 90% | 2854 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,273 psi | 87% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,231 psi | 90% | 2835 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2864 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 56,289 psi | 90% | 2756 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,042 psi | 88% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,607 psi | 88% | 2785 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 55,825 psi | 90% | 2828 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,715 psi | 72% | 2667 fps | 98.4% |
| Norma 201 | <<locked>> | 82% | 56,246 psi | 90% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,593 psi | 89% | 2818 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,491 psi | 87% | 2844 fps | 97.8% |
| Norma MRP | <<locked>> | 98% | 52,750 psi | 85% | 2917 fps | 99% |
| Norma URP | <<locked>> | 92% | 54,549 psi | 87% | 2848 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,347 psi | 90% | 2848 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2881 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 92% | 53,432 psi | 86% | 2848 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,557 psi | 75% | 2759 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 59% | 1785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,635 psi | 86% | 2776 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,853 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,869 psi | 90% | 2887 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,230 psi | 87% | 2913 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,888 psi | 69% | 2772 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 53,621 psi | 86% | 2730 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,563 psi | 86% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,998 psi | 88% | 2822 fps | 97% |
| Rottweil R 905 | <<locked>> | 98% | 55,463 psi | 89% | 2881 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 90% | 56,275 psi | 90% | 2812 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,607 psi | 88% | 2785 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 55,042 psi | 88% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,825 psi | 90% | 2828 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,897 psi | 88% | 2831 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,057 psi | 90% | 2805 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,578 psi | 88% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,143 psi | 87% | 2740 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,969 psi | 88% | 2877 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 53,505 psi | 86% | 2769 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,853 psi | 86% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,130 psi | 90% | 2858 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 53,911 psi | 86% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,259 psi | 87% | 2707 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,810 psi | 88% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,214 psi | 85% | 2792 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2776 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 55,680 psi | 89% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,927 psi | 90% | 2851 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2904 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,171 psi | 85% | 2907 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,347 psi | 90% | 2812 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,505 psi | 87% | 2861 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,600 psi | 73% | 2887 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,318 psi | 90% | 2815 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,362 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% | 51,416 psi | 82% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,298 psi | 79% | 2664 fps | 97.7% |
| Accurate 3100 | <<locked>> | 86% | 33,301 psi | 53% | 2428 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 48,704 psi | 78% | 2661 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,188 psi | 60% | 2533 fps | 98.1% |
| Accurate High Country | 70 gr | 94% | 47,688 psi | 76% | 2828 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 98% | 51,895 psi | 83% | 2887 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,035 psi | 74% | 2638 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 43,947 psi | 70% | 2677 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 51,053 psi | 82% | 2838 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,807 psi | 81% | 2848 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,918 psi | 70% | 2677 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,412 psi | 74% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,690 psi | 80% | 2730 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,274 psi | 58% | 2539 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,060 psi | 66% | 2664 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,410 psi | 70% | 2671 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,700 psi | 70% | 2720 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,513 psi | 43% | 2297 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,098 psi | 55% | 2523 fps | 95.8% |
| Alliant Reloder-26 | 64.4 gr | 84% | 32,445 psi | 52% | 2523 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 42,931 psi | 69% | 2703 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 46,833 psi | 75% | 2674 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,700 psi | 70% | 2720 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 41,176 psi | 66% | 2546 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 47,152 psi | 76% | 2684 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 39,160 psi | 63% | 2579 fps | 96% |
| Hodgdon H4350 | <<locked>> | 80% | 42,061 psi | 67% | 2598 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 96% | 51,140 psi | 82% | 2785 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,995 psi | 80% | 2769 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,765 psi | 54% | 2438 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,372 psi | 82% | 2772 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 38,014 psi | 61% | 2582 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 44% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,344 psi | 84% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,370 psi | 78% | 2671 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,560 psi | 81% | 2697 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 39,349 psi | 63% | 2530 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,656 psi | 68% | 2575 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 35,708 psi | 57% | 2484 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 50,981 psi | 82% | 2759 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,719 psi | 80% | 2726 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 98% | 48,559 psi | 78% | 2808 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 52,968 psi | 85% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,588 psi | 78% | 2667 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,132 psi | 64% | 2526 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 38,334 psi | 61% | 2507 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 34,592 psi | 55% | 2457 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,881 psi | 85% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,066 psi | 79% | 2717 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,338 psi | 71% | 2667 fps | 95.5% |
| Norma MRP | <<locked>> | 88% | 37,463 psi | 60% | 2615 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 36,869 psi | 59% | 2523 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 49,313 psi | 79% | 2740 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,501 psi | 78% | 2818 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,737 psi | 57% | 2507 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 40,335 psi | 65% | 2635 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 44% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,239 psi | 76% | 2671 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,642 psi | 70% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,840 psi | 59% | 2546 fps | 97.7% |
| ReloadSwiss RS 70 | 60.8 gr | 80% | 35,853 psi | 57% | 2549 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,856 psi | 64% | 2700 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 50,386 psi | 81% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,976 psi | 71% | 2618 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 48,457 psi | 78% | 2713 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 42,467 psi | 68% | 2654 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 41,176 psi | 66% | 2546 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,132 psi | 64% | 2526 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 48,588 psi | 78% | 2667 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,334 psi | 61% | 2507 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,121 psi | 72% | 2674 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,504 psi | 84% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,455 psi | 73% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,320 psi | 63% | 2474 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,076 psi | 67% | 2648 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 44,353 psi | 71% | 2618 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 33,475 psi | 54% | 2484 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 40,538 psi | 65% | 2582 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 50,778 psi | 81% | 2648 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,734 psi | 81% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,293 psi | 68% | 2549 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,377 psi | 62% | 2526 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 39,697 psi | 64% | 2559 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 49,095 psi | 79% | 2651 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,782 psi | 61% | 2526 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,254 psi | 47% | 2372 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 96% | 49,835 psi | 80% | 2848 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,434 psi | 60% | 2497 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,160 psi | 63% | 2579 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,005 psi | 40% | 2316 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,707 psi | 85% | 2762 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,554 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 | Remington PSP Core-Lokt. Alliant Reloder-26 delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,969 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 | Remington PSP Core-Lokt 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.