Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 220gr | 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.
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 3100 | <<locked>> | 98% | 55,390 psi | 89% | 2566 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,391 psi | 90% | 2484 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,882 psi | 86% | 2552 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,795 psi | 86% | 2651 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 84% | 55,985 psi | 90% | 2516 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,433 psi | 87% | 2598 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 98% | 55,666 psi | 89% | 2651 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 43,439 psi | 70% | 2444 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,450 psi | 62% | 2411 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,606 psi | 86% | 2490 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,447 psi | 87% | 2598 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,651 psi | 89% | 2615 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,824 psi | 86% | 2589 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,071 psi | 88% | 2648 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 2621 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,443 psi | 78% | 2579 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,043 psi | 90% | 2707 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,983 psi | 87% | 2631 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 54,447 psi | 87% | 2507 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,164 psi | 71% | 2510 fps | 97.2% |
| Bofors RP5 | <<locked>> | 98% | 55,071 psi | 88% | 2648 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 53,679 psi | 86% | 2503 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,892 psi | 77% | 2530 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 82% | 54,636 psi | 88% | 2526 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,695 psi | 89% | 2602 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 55,317 psi | 89% | 2562 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 96% | 55,912 psi | 90% | 2598 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,795 psi | 88% | 2582 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,824 psi | 88% | 2530 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2625 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 88% | 55,811 psi | 89% | 2638 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 59% | 1555 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,463 psi | 89% | 2500 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,824 psi | 88% | 2539 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,245 psi | 89% | 2526 fps | 99.9% |
| IMR 4831 | <<locked>> | 90% | 54,172 psi | 87% | 2543 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,751 psi | 86% | 2533 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 98% | 53,359 psi | 86% | 2631 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 55,753 psi | 89% | 2490 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,463 psi | 89% | 2523 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 53,388 psi | 86% | 2516 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,356 psi | 79% | 2484 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 55,390 psi | 89% | 2589 fps | 99.3% |
| Norma MRP | <<locked>> | 96% | 54,679 psi | 88% | 2671 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 56,101 psi | 90% | 2585 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,809 psi | 86% | 2648 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 54,592 psi | 88% | 2589 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,576 psi | 83% | 2589 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 60% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,404 psi | 87% | 2516 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,100 psi | 88% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,693 psi | 86% | 2575 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,579 psi | 89% | 2651 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2621 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 54,592 psi | 88% | 2507 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,130 psi | 90% | 2572 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 94% | 53,388 psi | 86% | 2579 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 53,679 psi | 86% | 2503 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,463 psi | 89% | 2523 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,753 psi | 89% | 2490 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 53,388 psi | 86% | 2516 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,956 psi | 90% | 2559 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,143 psi | 88% | 2392 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,882 psi | 88% | 2484 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,939 psi | 85% | 2575 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 54,462 psi | 87% | 2500 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,027 psi | 87% | 2516 fps | 97.8% |
| Somchem S365 | <<locked>> | 92% | 55,782 psi | 89% | 2585 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,809 psi | 86% | 2556 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 86% | 55,564 psi | 89% | 2474 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,447 psi | 87% | 2530 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,200 psi | 85% | 2536 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 56,405 psi | 90% | 2474 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 53,417 psi | 86% | 2536 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,795 psi | 88% | 2598 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,752 psi | 88% | 2664 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,401 psi | 81% | 2585 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,664 psi | 86% | 2497 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,985 psi | 90% | 2605 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,011 psi | 83% | 2694 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,679 psi | 86% | 2549 fps | 99.1% |
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% | 30,400 psi | 49% | 2129 fps | 96.1% |
| Accurate 4064 | <<locked>> | 80% | 52,997 psi | 85% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,133 psi | 66% | 2356 fps | 99.8% |
| Accurate MAGPRO | 63.4 gr | 90% | 43,656 psi | 70% | 2487 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 49,501 psi | 79% | 2425 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 36,912 psi | 59% | 2290 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 40,001 psi | 64% | 2382 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 40,741 psi | 65% | 2395 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 94% | 31,894 psi | 51% | 2251 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,401 psi | 81% | 2448 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,653 psi | 64% | 2362 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,266 psi | 73% | 2470 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,811 psi | 59% | 2290 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,101 psi | 59% | 2339 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,254 psi | 47% | 2159 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,398 psi | 44% | 2119 fps | 95% |
| Alliant Reloder-26 | 57 gr | 80% | 31,473 psi | 50% | 2270 fps | 98% |
| Bofors RP15 | <<locked>> | 88% | 36,651 psi | 59% | 2329 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 51,140 psi | 82% | 2464 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 38,841 psi | 62% | 2408 fps | 95.6% |
| Bofors RP5 | <<locked>> | 86% | 37,101 psi | 59% | 2339 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 44,570 psi | 71% | 2362 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 94% | 39,233 psi | 63% | 2365 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 51,082 psi | 82% | 2477 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,946 psi | 69% | 2402 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 45,759 psi | 73% | 2415 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 42,786 psi | 69% | 2392 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 41,945 psi | 67% | 2375 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,391 psi | 60% | 2264 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 34,345 psi | 55% | 2343 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,626 psi | 67% | 2415 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 44% | 1391 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,098 psi | 84% | 2454 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,147 psi | 64% | 2300 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,818 psi | 73% | 2382 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 39,247 psi | 63% | 2310 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 41,901 psi | 67% | 2339 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 41,017 psi | 66% | 2418 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 52,417 psi | 84% | 2448 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,468 psi | 70% | 2343 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 41,756 psi | 67% | 2329 fps | 98.6% |
| Lovex S071 | <<locked>> | 82% | 28,036 psi | 45% | 2073 fps | 95% |
| Norma 204 | <<locked>> | 80% | 39,668 psi | 64% | 2329 fps | 96.3% |
| Norma MRP | 55.3 gr | 80% | 31,618 psi | 51% | 2238 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 40,611 psi | 65% | 2349 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 40,596 psi | 65% | 2421 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 39,363 psi | 63% | 2343 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 33,576 psi | 54% | 2257 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 45% | 1424 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,952 psi | 82% | 2467 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,051 psi | 77% | 2510 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,785 psi | 65% | 2375 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,218 psi | 63% | 2385 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,417 psi | 54% | 2323 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 48,080 psi | 77% | 2415 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 40,799 psi | 65% | 2323 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 82% | 36,013 psi | 58% | 2274 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 44,570 psi | 71% | 2362 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,468 psi | 70% | 2343 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 52,417 psi | 84% | 2448 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,756 psi | 67% | 2329 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,197 psi | 79% | 2467 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,834 psi | 78% | 2313 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,540 psi | 68% | 2293 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,679 psi | 57% | 2270 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 48,124 psi | 77% | 2411 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,469 psi | 71% | 2369 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,275 psi | 60% | 2310 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,330 psi | 55% | 2215 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,006 psi | 74% | 2346 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,061 psi | 67% | 2346 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 33,678 psi | 54% | 2195 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 52,881 psi | 85% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,321 psi | 66% | 2346 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 32,605 psi | 52% | 2224 fps | 98.9% |
| Vihtavuori N560 | <<locked>> | 88% | 41,872 psi | 67% | 2448 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 41,147 psi | 66% | 2428 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,843 psi | 65% | 2313 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,946 psi | 69% | 2402 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,889 psi | 42% | 2159 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 35,694 psi | 57% | 2244 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 87 powders for .300 H&H Mag. loaded with the .308 | 220gr | Rhino Solid Shank. Alliant Reloder-26 delivers the highest muzzle velocity at 2,707 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,707 fps. ADI AR 2217 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:12.0 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 .308 | 220gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.