Load Specifications
Load data in caliber .300 H&H Mag. with .311 | 180gr | Prvi Partizan SP BT bullet and 91 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 Alliant Reloder-17.
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% | 54,520 psi | 87% | 2697 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,782 psi | 89% | 2766 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,432 psi | 86% | 2808 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 54,926 psi | 88% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,622 psi | 89% | 2858 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,274 psi | 89% | 2943 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 86% | 54,955 psi | 88% | 2782 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,084 psi | 85% | 2844 fps | 97.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,085 psi | 87% | 2887 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,230 psi | 87% | 2900 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 52,982 psi | 85% | 2838 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,738 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,057 psi | 90% | 2828 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,362 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,882 psi | 86% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,927 psi | 90% | 2887 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2887 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,951 psi | 80% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,642 psi | 70% | 2746 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,606 psi | 86% | 2959 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,602 psi | 78% | 2808 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 53,229 psi | 85% | 2776 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2887 fps | 97.9% |
| Bofors RP7 | <<locked>> | 90% | 56,086 psi | 90% | 2808 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 53,519 psi | 86% | 2785 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,070 psi | 87% | 2851 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 53,983 psi | 87% | 2812 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 98% | 54,447 psi | 87% | 2838 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,982 psi | 85% | 2785 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,723 psi | 88% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,143 psi | 87% | 2887 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 58% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,463 psi | 89% | 2785 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,621 psi | 88% | 2769 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,766 psi | 86% | 2749 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 53,417 psi | 86% | 2785 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,273 psi | 87% | 2782 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 56,057 psi | 90% | 2848 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,012 psi | 87% | 2805 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,072 psi | 90% | 2828 fps | 96.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,648 psi | 83% | 2861 fps | 96.2% |
| Lovex S060 | <<locked>> | 82% | 56,043 psi | 90% | 2753 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,781 psi | 88% | 2762 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,360 psi | 87% | 2782 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 55,622 psi | 89% | 2822 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,324 psi | 71% | 2657 fps | 98.3% |
| Norma 201 | <<locked>> | 82% | 55,985 psi | 90% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,347 psi | 89% | 2815 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,056 psi | 87% | 2835 fps | 97.7% |
| Norma MRP | <<locked>> | 98% | 52,605 psi | 84% | 2913 fps | 99% |
| Norma URP | <<locked>> | 92% | 54,375 psi | 87% | 2844 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,130 psi | 90% | 2841 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,750 psi | 83% | 2874 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 92% | 53,040 psi | 85% | 2841 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,195 psi | 74% | 2749 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 60% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,417 psi | 86% | 2769 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,345 psi | 86% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,419 psi | 89% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,012 psi | 87% | 2907 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,583 psi | 68% | 2762 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 53,374 psi | 86% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,330 psi | 86% | 2769 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,810 psi | 88% | 2815 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 98% | 54,998 psi | 88% | 2871 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 56,086 psi | 90% | 2808 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,360 psi | 87% | 2782 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 54,781 psi | 88% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,622 psi | 89% | 2822 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,694 psi | 88% | 2825 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,811 psi | 89% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,346 psi | 87% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,983 psi | 87% | 2733 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,505 psi | 87% | 2867 fps | 98.1% |
| Somchem S355 | <<locked>> | 86% | 53,272 psi | 85% | 2766 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,388 psi | 86% | 2844 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,695 psi | 89% | 2851 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 53,606 psi | 86% | 2684 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,012 psi | 87% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,549 psi | 87% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,968 psi | 85% | 2785 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2769 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 55,477 psi | 89% | 2743 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,492 psi | 89% | 2841 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,086 psi | 90% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,997 psi | 85% | 2900 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,188 psi | 90% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,331 psi | 87% | 2858 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,237 psi | 73% | 2881 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,043 psi | 90% | 2808 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,956 psi | 90% | 2844 fps | 98.1% |
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 2495 | <<locked>> | 80% | 51,126 psi | 82% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,863 psi | 78% | 2654 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 35,563 psi | 57% | 2480 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 48,399 psi | 78% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,941 psi | 59% | 2526 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 51,488 psi | 83% | 2877 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 45,774 psi | 73% | 2631 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,555 psi | 70% | 2667 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 98% | 50,662 psi | 81% | 2828 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,531 psi | 81% | 2841 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,772 psi | 70% | 2671 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,383 psi | 74% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,429 psi | 79% | 2723 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,042 psi | 58% | 2533 fps | 98% |
| Alliant Reloder-17 | 59.6 gr | 80% | 40,843 psi | 65% | 2661 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,250 psi | 69% | 2664 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,323 psi | 69% | 2710 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,368 psi | 42% | 2290 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,808 psi | 54% | 2513 fps | 95.6% |
| Alliant Reloder-26 | 64.1 gr | 84% | 32,256 psi | 52% | 2516 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 42,728 psi | 69% | 2697 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,572 psi | 75% | 2667 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,323 psi | 69% | 2710 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 41,002 psi | 66% | 2539 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 46,920 psi | 75% | 2677 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 38,943 psi | 62% | 2572 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,843 psi | 67% | 2592 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 96% | 50,734 psi | 81% | 2779 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,518 psi | 54% | 2428 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,126 psi | 82% | 2769 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,524 psi | 65% | 2638 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 44% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,083 psi | 84% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,153 psi | 77% | 2667 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,343 psi | 81% | 2694 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 39,160 psi | 63% | 2523 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,438 psi | 68% | 2572 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 35,476 psi | 57% | 2477 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 50,720 psi | 81% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,356 psi | 79% | 2717 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 48,385 psi | 78% | 2802 fps | 95.3% |
| Lovex S060 | <<locked>> | 80% | 52,707 psi | 85% | 2703 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,341 psi | 78% | 2661 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,900 psi | 64% | 2520 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 38,276 psi | 61% | 2503 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 34,243 psi | 55% | 2451 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 52,591 psi | 84% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,834 psi | 78% | 2713 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,121 psi | 71% | 2661 fps | 95.4% |
| Norma MRP | <<locked>> | 88% | 37,275 psi | 60% | 2608 fps | 95% |
| Norma URP | <<locked>> | 80% | 36,811 psi | 59% | 2520 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 49,081 psi | 79% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,385 psi | 78% | 2812 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 35,534 psi | 57% | 2503 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 96% | 39,987 psi | 64% | 2625 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 44% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,021 psi | 75% | 2664 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,410 psi | 70% | 2713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,622 psi | 59% | 2539 fps | 97.6% |
| ReloadSwiss RS 70 | 60.5 gr | 80% | 35,636 psi | 57% | 2546 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,610 psi | 64% | 2694 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 50,125 psi | 80% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,932 psi | 70% | 2618 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 48,254 psi | 77% | 2707 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 90% | 42,264 psi | 68% | 2648 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 41,002 psi | 66% | 2539 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,900 psi | 64% | 2520 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 48,341 psi | 78% | 2661 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,276 psi | 61% | 2503 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,889 psi | 72% | 2667 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,272 psi | 84% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,208 psi | 72% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,117 psi | 63% | 2467 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,872 psi | 67% | 2641 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 44,092 psi | 71% | 2612 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 33,243 psi | 53% | 2477 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 40,147 psi | 64% | 2575 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 50,459 psi | 81% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,720 psi | 81% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,250 psi | 68% | 2549 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,174 psi | 61% | 2520 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 94% | 42,148 psi | 68% | 2605 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,863 psi | 78% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,565 psi | 60% | 2520 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 29,022 psi | 47% | 2365 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 49,472 psi | 79% | 2838 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,289 psi | 60% | 2490 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,943 psi | 62% | 2572 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,571 psi | 43% | 2379 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,446 psi | 84% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,380 psi | 68% | 2615 fps | 95% |
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 91 powders for .300 H&H Mag. loaded with the .311 | 180gr | Prvi Partizan SP BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 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 0.311" 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, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .311 | 180gr | Prvi Partizan SP BT 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.