Load Specifications
Load data in caliber .300 H&H Mag. with .310 | 215gr | Rhino Solid Shank bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Norma MRP.
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 3100 | <<locked>> | 98% | 55,172 psi | 88% | 2595 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,347 psi | 90% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,606 psi | 86% | 2582 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,635 psi | 86% | 2680 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 55,970 psi | 90% | 2549 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,317 psi | 87% | 2631 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 98% | 55,680 psi | 89% | 2684 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2477 fps | 96.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,232 psi | 61% | 2434 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,563 psi | 86% | 2526 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,520 psi | 87% | 2635 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,622 psi | 89% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,708 psi | 86% | 2618 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,042 psi | 88% | 2680 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,637 psi | 89% | 2651 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,138 psi | 77% | 2605 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,898 psi | 90% | 2740 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2664 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 54,346 psi | 87% | 2543 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,135 psi | 71% | 2539 fps | 97% |
| Bofors RP5 | <<locked>> | 98% | 55,042 psi | 88% | 2680 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 53,563 psi | 86% | 2536 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,543 psi | 76% | 2552 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 54,534 psi | 87% | 2559 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,666 psi | 89% | 2635 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 55,100 psi | 88% | 2595 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 96% | 55,622 psi | 89% | 2628 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,563 psi | 87% | 2612 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,795 psi | 88% | 2562 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,079 psi | 75% | 2651 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 88% | 55,564 psi | 89% | 2667 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 59% | 1581 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,448 psi | 89% | 2533 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,563 psi | 87% | 2569 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,114 psi | 88% | 2559 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 54,128 psi | 87% | 2575 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,664 psi | 86% | 2566 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 98% | 53,069 psi | 85% | 2661 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 55,724 psi | 89% | 2526 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,274 psi | 89% | 2556 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 53,447 psi | 86% | 2552 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2513 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 55,245 psi | 89% | 2621 fps | 99.2% |
| Norma MRP | <<locked>> | 96% | 54,592 psi | 88% | 2700 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 55,825 psi | 90% | 2615 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,447 psi | 86% | 2677 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 54,433 psi | 87% | 2621 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,416 psi | 82% | 2618 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 60% | 1617 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,244 psi | 87% | 2546 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,100 psi | 88% | 2638 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,330 psi | 86% | 2605 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,361 psi | 89% | 2680 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 2651 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 54,491 psi | 87% | 2536 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,043 psi | 90% | 2605 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 94% | 53,258 psi | 85% | 2612 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 53,563 psi | 86% | 2536 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,274 psi | 89% | 2556 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,724 psi | 89% | 2526 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 53,447 psi | 86% | 2552 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,014 psi | 90% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,911 psi | 88% | 2421 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,665 psi | 88% | 2513 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,260 psi | 90% | 2654 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 54,360 psi | 87% | 2533 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,824 psi | 86% | 2546 fps | 97.6% |
| Somchem S365 | <<locked>> | 92% | 55,666 psi | 89% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,679 psi | 86% | 2585 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 55,419 psi | 89% | 2507 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,215 psi | 87% | 2562 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,939 psi | 85% | 2562 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 56,318 psi | 90% | 2507 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 53,359 psi | 86% | 2569 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,636 psi | 88% | 2631 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,708 psi | 88% | 2697 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2618 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,505 psi | 86% | 2530 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,666 psi | 89% | 2635 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,851 psi | 83% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,664 psi | 86% | 2582 fps | 99% |
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 3100 | <<locked>> | 80% | 30,226 psi | 48% | 2152 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 53,026 psi | 85% | 2474 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,901 psi | 66% | 2382 fps | 99.7% |
| Accurate MAGPRO | 65.8 gr | 92% | 46,543 psi | 75% | 2569 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 49,313 psi | 79% | 2457 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 36,883 psi | 59% | 2320 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 42,569 psi | 68% | 2464 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 40,596 psi | 65% | 2418 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 33,736 psi | 54% | 2326 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,169 psi | 80% | 2477 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,465 psi | 63% | 2388 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,150 psi | 72% | 2500 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,738 psi | 59% | 2316 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,941 psi | 59% | 2365 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,254 psi | 47% | 2185 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,037 psi | 47% | 2192 fps | 95.7% |
| Alliant Reloder-26 | 57.9 gr | 80% | 31,343 psi | 50% | 2293 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 36,666 psi | 59% | 2356 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 50,850 psi | 82% | 2493 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 38,682 psi | 62% | 2434 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 36,941 psi | 59% | 2365 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 44,396 psi | 71% | 2388 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 39,102 psi | 63% | 2392 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 51,010 psi | 82% | 2510 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,656 psi | 68% | 2428 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,498 psi | 73% | 2441 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 42,569 psi | 68% | 2415 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,672 psi | 72% | 2454 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,202 psi | 60% | 2293 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,463 psi | 58% | 2425 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 41,655 psi | 67% | 2444 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 44% | 1407 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,909 psi | 83% | 2484 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,929 psi | 64% | 2326 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,832 psi | 73% | 2415 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 39,233 psi | 63% | 2339 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,628 psi | 72% | 2418 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 90% | 40,785 psi | 65% | 2441 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 52,475 psi | 84% | 2480 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,482 psi | 70% | 2372 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 41,582 psi | 67% | 2356 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 29,631 psi | 48% | 2139 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 39,595 psi | 63% | 2359 fps | 96.1% |
| Norma MRP | 57.6 gr | 82% | 33,736 psi | 54% | 2320 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 40,379 psi | 65% | 2372 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 40,495 psi | 65% | 2451 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 39,276 psi | 63% | 2372 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 90% | 35,853 psi | 57% | 2336 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 45% | 1444 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,879 psi | 82% | 2497 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,935 psi | 77% | 2543 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,669 psi | 65% | 2402 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,088 psi | 63% | 2411 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,402 psi | 54% | 2346 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 47,848 psi | 77% | 2444 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 40,756 psi | 65% | 2352 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 35,926 psi | 58% | 2300 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 44,396 psi | 71% | 2388 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,482 psi | 70% | 2372 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 52,475 psi | 84% | 2480 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,582 psi | 67% | 2356 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,110 psi | 79% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,704 psi | 78% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,337 psi | 68% | 2320 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,592 psi | 57% | 2297 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,153 psi | 77% | 2444 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,208 psi | 71% | 2392 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 37,057 psi | 59% | 2336 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,113 psi | 55% | 2238 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 45,818 psi | 73% | 2375 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,814 psi | 67% | 2372 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 35,940 psi | 58% | 2274 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 52,837 psi | 85% | 2461 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,263 psi | 66% | 2375 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 32,619 psi | 52% | 2251 fps | 98.8% |
| Vihtavuori N560 | <<locked>> | 88% | 41,771 psi | 67% | 2474 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 41,147 psi | 66% | 2457 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,698 psi | 65% | 2343 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,859 psi | 69% | 2431 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,802 psi | 41% | 2178 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,087 psi | 61% | 2323 fps | 95.8% |
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 81 powders for .300 H&H Mag. loaded with the .310 | 215gr | Rhino Solid Shank. Alliant Reloder-26 delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,740 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 215.0 gr projectile in 0.31" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Accurate MAGPRO, Alliant Reloder-26, Norma MRP rank at the top here: for .300 H&H Mag. with the .310 | 215gr | 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.