Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 201gr | RWS Kegelspitz bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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% | 55,317 psi | 89% | 2618 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 53,751 psi | 86% | 2671 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 55,085 psi | 88% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,985 psi | 90% | 2710 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,926 psi | 88% | 2805 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 55,883 psi | 90% | 2808 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 54,766 psi | 88% | 2631 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,098 psi | 85% | 2703 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 54,346 psi | 87% | 2756 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,376 psi | 60% | 2490 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,142 psi | 85% | 2700 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,840 psi | 90% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,811 psi | 89% | 2671 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,997 psi | 85% | 2710 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,114 psi | 87% | 2730 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,927 psi | 90% | 2746 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,592 psi | 86% | 2753 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2730 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2674 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,215 psi | 87% | 2815 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,576 psi | 84% | 2736 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 52,968 psi | 85% | 2618 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 42,830 psi | 69% | 2602 fps | 96% |
| Bofors RP5 | <<locked>> | 98% | 53,592 psi | 86% | 2753 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 55,912 psi | 90% | 2661 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,557 psi | 75% | 2618 fps | 97% |
| Hodgdon H380 | <<locked>> | 82% | 53,403 psi | 86% | 2638 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,331 psi | 87% | 2710 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 53,838 psi | 86% | 2667 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 54,404 psi | 87% | 2700 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,374 psi | 86% | 2687 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,490 psi | 86% | 2641 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,035 psi | 74% | 2717 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 54,215 psi | 87% | 2743 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 59% | 1644 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,128 psi | 87% | 2612 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,403 psi | 86% | 2644 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,027 psi | 87% | 2635 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 56,115 psi | 90% | 2700 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,985 psi | 90% | 2687 fps | 97.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2785 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 54,621 psi | 88% | 2605 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,317 psi | 87% | 2635 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,564 psi | 89% | 2677 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,877 psi | 77% | 2582 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 55,143 psi | 88% | 2657 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,070 psi | 87% | 2694 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 53,040 psi | 85% | 2772 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,549 psi | 87% | 2697 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,912 psi | 90% | 2684 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,927 psi | 90% | 2802 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 53,243 psi | 85% | 2697 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,140 psi | 80% | 2687 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,333 psi | 60% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,098 psi | 85% | 2625 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,751 psi | 86% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,854 psi | 90% | 2736 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,896 psi | 86% | 2756 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,992 psi | 74% | 2713 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 53,330 psi | 86% | 2618 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,636 psi | 88% | 2674 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 55,317 psi | 89% | 2733 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 55,912 psi | 90% | 2661 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,317 psi | 87% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,621 psi | 88% | 2605 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,564 psi | 89% | 2677 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,650 psi | 88% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,896 psi | 86% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,621 psi | 86% | 2589 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,853 psi | 88% | 2730 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 53,127 psi | 85% | 2612 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,318 psi | 90% | 2671 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 54,070 psi | 87% | 2697 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,086 psi | 90% | 2713 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 54,230 psi | 87% | 2589 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,084 psi | 85% | 2641 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,230 psi | 89% | 2687 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 55,245 psi | 89% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,506 psi | 89% | 2694 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,185 psi | 85% | 2707 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,214 psi | 85% | 2766 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2680 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,956 psi | 90% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,331 psi | 87% | 2710 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,966 psi | 80% | 2802 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,115 psi | 90% | 2707 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 2700 | <<locked>> | 80% | 51,692 psi | 83% | 2566 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 31,430 psi | 50% | 2257 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 51,692 psi | 83% | 2552 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,798 psi | 64% | 2451 fps | 99.4% |
| Accurate High Country | <<locked>> | 88% | 41,626 psi | 67% | 2572 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 94% | 48,675 psi | 78% | 2690 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 48,472 psi | 78% | 2536 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,406 psi | 62% | 2434 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 44,570 psi | 71% | 2585 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 35,099 psi | 56% | 2434 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,551 psi | 62% | 2434 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,168 psi | 79% | 2556 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,388 psi | 84% | 2621 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,609 psi | 62% | 2457 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,758 psi | 70% | 2569 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,174 psi | 61% | 2428 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,348 psi | 61% | 2477 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,384 psi | 46% | 2238 fps | 98% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,197 psi | 48% | 2300 fps | 95.4% |
| Alliant Reloder-26 | 59.7 gr | 80% | 30,400 psi | 49% | 2346 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 38,014 psi | 61% | 2467 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 49,632 psi | 80% | 2569 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,103 psi | 64% | 2546 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 38,348 psi | 61% | 2477 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 43,511 psi | 70% | 2457 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 40,727 psi | 65% | 2503 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 49,850 psi | 80% | 2585 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,713 psi | 67% | 2493 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 44,454 psi | 71% | 2510 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 92% | 47,630 psi | 76% | 2592 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,731 psi | 75% | 2575 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,143 psi | 58% | 2356 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,942 psi | 61% | 2536 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 40,596 psi | 65% | 2510 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 44% | 1467 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,010 psi | 82% | 2566 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,059 psi | 63% | 2392 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,962 psi | 72% | 2487 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 38,261 psi | 61% | 2405 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,354 psi | 74% | 2533 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 45,353 psi | 73% | 2615 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 51,256 psi | 82% | 2559 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,424 psi | 68% | 2441 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 40,669 psi | 65% | 2425 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 30,806 psi | 49% | 2244 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 51,750 psi | 83% | 2608 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,551 psi | 62% | 2418 fps | 95% |
| Norma MRP | 60.8 gr | 84% | 35,012 psi | 56% | 2431 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 39,421 psi | 63% | 2441 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 80% | 52,417 psi | 84% | 2638 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 42,221 psi | 68% | 2566 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 38,189 psi | 61% | 2434 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 92% | 37,492 psi | 60% | 2451 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,050 psi | 45% | 1506 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,879 psi | 80% | 2572 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,485 psi | 75% | 2615 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,610 psi | 64% | 2467 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,276 psi | 61% | 2480 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,751 psi | 56% | 2454 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 46,804 psi | 75% | 2523 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,583 psi | 68% | 2470 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 37,376 psi | 60% | 2415 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 43,511 psi | 70% | 2457 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,424 psi | 68% | 2441 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 51,256 psi | 82% | 2559 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,669 psi | 65% | 2425 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,892 psi | 77% | 2572 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,761 psi | 77% | 2421 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,626 psi | 67% | 2392 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,450 psi | 63% | 2461 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,963 psi | 75% | 2520 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,311 psi | 74% | 2513 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 35,955 psi | 58% | 2402 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,476 psi | 57% | 2346 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 44,846 psi | 72% | 2451 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,799 psi | 65% | 2438 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 37,347 psi | 60% | 2382 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 51,692 psi | 83% | 2539 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,190 psi | 64% | 2441 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 31,517 psi | 51% | 2306 fps | 98% |
| Vihtavuori N560 | 66.6 gr | 92% | 46,470 psi | 75% | 2648 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 98% | 45,730 psi | 73% | 2628 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,914 psi | 64% | 2411 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,713 psi | 67% | 2493 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,077 psi | 40% | 2221 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,740 psi | 64% | 2438 fps | 95.6% |
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 86 powders for .300 H&H Mag. loaded with the .308 | 201gr | RWS Kegelspitz. Alliant Reloder-26 delivers the highest muzzle velocity at 2,815 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,815 fps. ADI AR 2225 gives the best case fill at 100 %, and 86 of the 86 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 201.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 H&H Mag. with the .308 | 201gr | RWS Kegelspitz 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.