Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 200gr | NorthFork Bonded Core bullet and 88 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 ReloadSwiss RS 70.
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% | 56,014 psi | 90% | 2559 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,490 psi | 86% | 2585 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,708 psi | 88% | 2677 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 56,362 psi | 90% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,287 psi | 85% | 2671 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 52,997 psi | 85% | 2759 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 86% | 56,347 psi | 90% | 2648 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,288 psi | 87% | 2717 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2769 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,753 psi | 89% | 2762 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,693 psi | 86% | 2618 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,896 psi | 86% | 2641 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,302 psi | 87% | 2726 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,434 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,751 psi | 86% | 2707 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,563 psi | 87% | 2766 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,547 psi | 83% | 2694 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,846 psi | 72% | 2631 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,143 psi | 88% | 2828 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 2690 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 54,375 psi | 87% | 2635 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,563 psi | 87% | 2766 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 53,838 psi | 86% | 2625 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,665 psi | 88% | 2651 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,506 psi | 89% | 2723 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 55,201 psi | 89% | 2684 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 98% | 55,593 psi | 89% | 2710 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,476 psi | 87% | 2694 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,636 psi | 88% | 2654 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,956 psi | 90% | 2680 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,845 psi | 70% | 2664 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 90% | 55,680 psi | 89% | 2759 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 59% | 1634 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,811 psi | 89% | 2628 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,737 psi | 88% | 2615 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 54,650 psi | 88% | 2657 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,448 psi | 89% | 2651 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 53,969 psi | 87% | 2667 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,332 psi | 89% | 2667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,795 psi | 86% | 2648 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,866 psi | 85% | 2740 fps | 97.4% |
| Lovex S062 | <<locked>> | 84% | 56,014 psi | 90% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,492 psi | 89% | 2644 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,490 psi | 86% | 2641 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,629 psi | 73% | 2543 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 53,243 psi | 85% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,492 psi | 89% | 2710 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 53,882 psi | 86% | 2785 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 55,666 psi | 89% | 2707 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,882 psi | 86% | 2654 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,359 psi | 86% | 2756 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 54,462 psi | 87% | 2710 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,369 psi | 76% | 2635 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,260 psi | 60% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,723 psi | 88% | 2641 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,926 psi | 88% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,142 psi | 85% | 2694 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,303 psi | 89% | 2776 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,613 psi | 70% | 2654 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 54,520 psi | 87% | 2585 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,505 psi | 87% | 2631 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,854 psi | 90% | 2687 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 52,982 psi | 85% | 2694 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 53,838 psi | 86% | 2625 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,492 psi | 89% | 2644 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 56,014 psi | 90% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,490 psi | 86% | 2641 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,970 psi | 90% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,419 psi | 89% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,259 psi | 89% | 2605 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,014 psi | 90% | 2740 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 54,520 psi | 87% | 2628 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,012 psi | 87% | 2631 fps | 96.7% |
| Somchem S365 | <<locked>> | 94% | 55,143 psi | 88% | 2710 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,650 psi | 86% | 2671 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 54,998 psi | 88% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,129 psi | 88% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,869 psi | 90% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,143 psi | 87% | 2651 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 2644 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 53,301 psi | 85% | 2559 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,243 psi | 85% | 2657 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,012 psi | 87% | 2717 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,244 psi | 87% | 2776 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,606 psi | 86% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,796 psi | 89% | 2726 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,514 psi | 75% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,519 psi | 86% | 2664 fps | 98.4% |
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% | 52,562 psi | 84% | 2516 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,096 psi | 80% | 2533 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 31,966 psi | 51% | 2270 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 49,806 psi | 80% | 2526 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,942 psi | 61% | 2411 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 96% | 49,429 psi | 79% | 2700 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,876 psi | 75% | 2507 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,378 psi | 63% | 2448 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 45,498 psi | 73% | 2595 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,779 psi | 83% | 2707 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,485 psi | 76% | 2530 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,459 psi | 81% | 2589 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,927 psi | 59% | 2418 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,989 psi | 67% | 2539 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,102 psi | 63% | 2444 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,146 psi | 63% | 2490 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,209 psi | 44% | 2198 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,748 psi | 49% | 2310 fps | 95.3% |
| Alliant Reloder-26 | 57.6 gr | 80% | 28,964 psi | 46% | 2303 fps | 95.5% |
| Bofors RP15 | <<locked>> | 94% | 41,118 psi | 66% | 2530 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,703 psi | 76% | 2539 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,146 psi | 63% | 2490 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,090 psi | 67% | 2425 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 80% | 48,066 psi | 77% | 2552 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 39,842 psi | 64% | 2454 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,815 psi | 69% | 2474 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 94% | 48,675 psi | 78% | 2602 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,732 psi | 77% | 2585 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,577 psi | 55% | 2323 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,388 psi | 84% | 2631 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,580 psi | 62% | 2543 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 38,841 psi | 62% | 2467 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 44% | 1453 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,327 psi | 79% | 2533 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,561 psi | 83% | 2566 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 37,724 psi | 60% | 2359 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,381 psi | 70% | 2451 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 36,550 psi | 59% | 2369 fps | 98.6% |
| IMR 4895 | <<locked>> | 80% | 51,779 psi | 83% | 2615 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,427 psi | 76% | 2546 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 96% | 46,267 psi | 74% | 2625 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 49,545 psi | 79% | 2530 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,973 psi | 66% | 2408 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 39,247 psi | 63% | 2392 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 31,140 psi | 50% | 2251 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 49,821 psi | 80% | 2575 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,668 psi | 64% | 2434 fps | 95% |
| Norma MRP | 60.1 gr | 86% | 35,868 psi | 58% | 2444 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,869 psi | 61% | 2408 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,154 psi | 80% | 2598 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,120 psi | 69% | 2575 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 36,608 psi | 59% | 2395 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 38,261 psi | 61% | 2461 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 45% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,037 psi | 77% | 2536 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,614 psi | 72% | 2585 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,710 psi | 60% | 2428 fps | 98.6% |
| ReloadSwiss RS 70 | 57 gr | 80% | 36,506 psi | 59% | 2434 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,476 psi | 57% | 2467 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,271 psi | 82% | 2539 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,121 psi | 72% | 2493 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,555 psi | 70% | 2484 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 40,770 psi | 65% | 2480 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 42,090 psi | 67% | 2425 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,973 psi | 66% | 2408 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 49,545 psi | 79% | 2530 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,247 psi | 63% | 2392 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,108 psi | 74% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,137 psi | 74% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,089 psi | 64% | 2356 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,379 psi | 65% | 2477 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 45,324 psi | 73% | 2490 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,471 psi | 76% | 2526 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,345 psi | 55% | 2369 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,201 psi | 58% | 2359 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 51,619 psi | 83% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,866 psi | 83% | 2520 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,294 psi | 69% | 2421 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,102 psi | 63% | 2402 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 37,971 psi | 61% | 2388 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,966 psi | 80% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,595 psi | 62% | 2405 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 30,008 psi | 48% | 2270 fps | 97.2% |
| Vihtavuori N560 | <<locked>> | 94% | 47,587 psi | 76% | 2664 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,159 psi | 61% | 2375 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,030 psi | 64% | 2457 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,004 psi | 38% | 2172 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,567 psi | 65% | 2448 fps | 95.5% |
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 88 powders for .300 H&H Mag. loaded with the .308 | 200gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 2,828 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,828 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 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 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, ReloadSwiss RS 70 rank at the top here: for .300 H&H Mag. with the .308 | 200gr | NorthFork Bonded Core 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.