Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 200gr | Rhino Solid Shank bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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 2700 | <<locked>> | 82% | 54,737 psi | 88% | 2612 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 52,881 psi | 85% | 2661 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,360 psi | 87% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,998 psi | 88% | 2700 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 54,766 psi | 88% | 2795 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 54,114 psi | 87% | 2625 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,883 psi | 90% | 2749 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 53,301 psi | 85% | 2740 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,651 psi | 59% | 2474 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,869 psi | 90% | 2743 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,869 psi | 90% | 2743 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,868 psi | 88% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,129 psi | 88% | 2664 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,666 psi | 89% | 2753 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,113 psi | 85% | 2720 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,114 psi | 88% | 2736 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,144 psi | 90% | 2795 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,272 psi | 85% | 2723 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2664 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,243 psi | 85% | 2805 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,459 psi | 83% | 2720 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 55,840 psi | 90% | 2661 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,144 psi | 90% | 2795 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 55,071 psi | 88% | 2654 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,658 psi | 73% | 2602 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 56,014 psi | 90% | 2677 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,461 psi | 86% | 2700 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 53,185 psi | 85% | 2661 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 53,606 psi | 86% | 2690 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,028 psi | 90% | 2726 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,927 psi | 90% | 2677 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,107 psi | 72% | 2700 fps | 98% |
| Hodgdon Superformance | <<locked>> | 88% | 53,374 psi | 86% | 2733 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 59% | 1644 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,679 psi | 86% | 2608 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,028 psi | 90% | 2641 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 56,014 psi | 90% | 2684 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,214 psi | 85% | 2628 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 55,463 psi | 89% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,245 psi | 89% | 2680 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,592 psi | 88% | 2776 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 53,925 psi | 86% | 2602 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,476 psi | 86% | 2625 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 54,708 psi | 88% | 2667 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,007 psi | 75% | 2572 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,418 psi | 87% | 2651 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,214 psi | 85% | 2684 fps | 98.4% |
| Norma MRP | <<locked>> | 98% | 55,825 psi | 90% | 2818 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 53,621 psi | 86% | 2687 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,201 psi | 89% | 2677 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,100 psi | 88% | 2795 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 92% | 55,883 psi | 90% | 2740 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,168 psi | 79% | 2674 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,376 psi | 60% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,927 psi | 90% | 2667 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,420 psi | 90% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,926 psi | 88% | 2726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,055 psi | 85% | 2746 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,150 psi | 72% | 2697 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 55,782 psi | 89% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,956 psi | 90% | 2657 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,853 psi | 86% | 2664 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 96% | 54,447 psi | 87% | 2723 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 55,071 psi | 88% | 2654 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,476 psi | 86% | 2625 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,925 psi | 86% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,708 psi | 88% | 2667 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,998 psi | 87% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,229 psi | 85% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,376 psi | 90% | 2631 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,983 psi | 87% | 2717 fps | 98.8% |
| Somchem S355 | <<locked>> | 86% | 55,927 psi | 90% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,622 psi | 89% | 2664 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 53,069 psi | 85% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,969 psi | 88% | 2700 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 82% | 56,115 psi | 90% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,318 psi | 90% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,563 psi | 86% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,709 psi | 89% | 2680 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,418 psi | 87% | 2677 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 54,375 psi | 87% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,694 psi | 88% | 2684 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,854 psi | 90% | 2746 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,999 psi | 90% | 2812 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,877 psi | 77% | 2667 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,143 psi | 88% | 2648 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,664 psi | 86% | 2703 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,515 psi | 78% | 2789 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,998 psi | 88% | 2694 fps | 98.7% |
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 2700 | <<locked>> | 80% | 51,126 psi | 82% | 2559 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 30,850 psi | 49% | 2247 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,894 psi | 82% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,117 psi | 63% | 2438 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 47,616 psi | 76% | 2677 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,805 psi | 77% | 2530 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,292 psi | 65% | 2477 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 43,859 psi | 70% | 2572 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 34,563 psi | 55% | 2421 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,611 psi | 65% | 2480 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,611 psi | 65% | 2480 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,457 psi | 78% | 2549 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,677 psi | 83% | 2615 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,971 psi | 61% | 2448 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,120 psi | 69% | 2562 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,176 psi | 64% | 2474 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,811 psi | 61% | 2467 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,920 psi | 45% | 2224 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,589 psi | 51% | 2339 fps | 96% |
| Alliant Reloder-26 | 59.1 gr | 80% | 29,892 psi | 48% | 2333 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 39,842 psi | 64% | 2510 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 48,921 psi | 78% | 2562 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 37,811 psi | 61% | 2467 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,902 psi | 69% | 2451 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 42,917 psi | 69% | 2549 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,168 psi | 79% | 2575 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,104 psi | 66% | 2487 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 43,845 psi | 70% | 2500 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 46,876 psi | 75% | 2579 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,977 psi | 74% | 2566 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,505 psi | 57% | 2346 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,304 psi | 60% | 2523 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,885 psi | 64% | 2497 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 44% | 1467 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,299 psi | 81% | 2556 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,620 psi | 84% | 2592 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 38,493 psi | 62% | 2382 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,367 psi | 71% | 2477 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,623 psi | 60% | 2395 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,861 psi | 74% | 2526 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 44,599 psi | 72% | 2602 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 50,560 psi | 81% | 2552 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,829 psi | 67% | 2431 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,059 psi | 64% | 2415 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 32,097 psi | 51% | 2277 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,039 psi | 82% | 2602 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,611 psi | 65% | 2464 fps | 95.5% |
| Norma MRP | 60.2 gr | 84% | 34,534 psi | 55% | 2421 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,769 psi | 62% | 2431 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,532 psi | 83% | 2625 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,498 psi | 71% | 2612 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 37,579 psi | 60% | 2421 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 36,854 psi | 59% | 2438 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 45% | 1503 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,037 psi | 79% | 2562 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,788 psi | 73% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,001 psi | 63% | 2461 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,565 psi | 60% | 2467 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,695 psi | 59% | 2507 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 52,533 psi | 84% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,093 psi | 74% | 2513 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,657 psi | 72% | 2510 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 39,175 psi | 63% | 2454 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,902 psi | 69% | 2451 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,829 psi | 67% | 2431 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,560 psi | 81% | 2552 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,059 psi | 64% | 2415 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,210 psi | 76% | 2566 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,094 psi | 76% | 2418 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,060 psi | 66% | 2382 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,841 psi | 62% | 2451 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,282 psi | 74% | 2510 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,629 psi | 73% | 2503 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,317 psi | 57% | 2395 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,304 psi | 60% | 2388 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,765 psi | 85% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,837 psi | 85% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,193 psi | 71% | 2444 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,176 psi | 64% | 2431 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,622 psi | 59% | 2369 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,053 psi | 82% | 2536 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,610 psi | 64% | 2431 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 31,053 psi | 50% | 2300 fps | 97.7% |
| Vihtavuori N560 | 65.9 gr | 92% | 45,687 psi | 73% | 2638 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 44,759 psi | 72% | 2612 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,175 psi | 63% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,104 psi | 66% | 2487 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,656 psi | 40% | 2205 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,044 psi | 63% | 2425 fps | 95.2% |
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 89 powders for .300 H&H Mag. loaded with the .308 | 200gr | Rhino Solid Shank. Norma MRP delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,818 fps. ADI AR 2225 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-22, Alliant Reloder-23 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 H&H Mag. with the .308 | 200gr | Rhino Solid Shank 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.