Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Sako Hammerhead bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 55,912 psi | 88% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,276 psi | 90% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,447 psi | 85% | 2858 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 54,389 psi | 85% | 2799 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 55,593 psi | 87% | 2858 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,937 psi | 78% | 2762 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,498 psi | 70% | 2723 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,549 psi | 85% | 2795 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,434 psi | 87% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,464 psi | 90% | 2841 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,666 psi | 87% | 2851 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,898 psi | 89% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,624 psi | 90% | 2913 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,348 psi | 90% | 2822 fps | 96.8% |
| Bofors RP15 | <<locked>> | 96% | 54,853 psi | 86% | 2841 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,330 psi | 82% | 2831 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 55,666 psi | 87% | 2851 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,811 psi | 87% | 2740 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 2844 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,259 psi | 87% | 2792 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,740 psi | 90% | 2805 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 55,651 psi | 87% | 2799 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,520 psi | 85% | 2782 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,766 psi | 86% | 2720 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,114 psi | 86% | 2956 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,506 psi | 87% | 2831 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,363 psi | 90% | 2779 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,305 psi | 90% | 2762 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,580 psi | 90% | 2785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,681 psi | 89% | 2782 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 57,421 psi | 90% | 2897 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,118 psi | 63% | 2625 fps | 96% |
| Lovex S065 | <<locked>> | 84% | 54,520 psi | 85% | 2713 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,028 psi | 88% | 2756 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,868 psi | 86% | 2782 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,161 psi | 63% | 2651 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 55,521 psi | 87% | 2871 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,492 psi | 87% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,056 psi | 85% | 2854 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 54,433 psi | 85% | 2782 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,652 psi | 89% | 2851 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 60% | 1772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,188 psi | 90% | 2818 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,637 psi | 87% | 2848 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2953 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2841 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 57,217 psi | 90% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,419 psi | 87% | 2766 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 56,956 psi | 89% | 2831 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 55,811 psi | 87% | 2740 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,520 psi | 85% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,028 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,840 psi | 89% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,305 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,521 psi | 89% | 2825 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 56,869 psi | 89% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,927 psi | 89% | 2762 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 56,014 psi | 88% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,493 psi | 90% | 2805 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 54,491 psi | 85% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,377 psi | 90% | 2769 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,942 psi | 89% | 2785 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,478 psi | 89% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,622 psi | 87% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,347 psi | 87% | 2867 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 98% | 55,201 psi | 87% | 2851 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 2844 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,768 psi | 89% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,259 psi | 87% | 2792 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,868 psi | 86% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,319 psi | 90% | 2799 fps | 99.7% |
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% | 34,911 psi | 55% | 2392 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 46,731 psi | 73% | 2635 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 44,092 psi | 69% | 2671 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 38,986 psi | 61% | 2513 fps | 96.4% |
| ADI AR 2213 | <<locked>> | 84% | 39,711 psi | 62% | 2559 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 92% | 38,363 psi | 60% | 2526 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 32,227 psi | 51% | 2428 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,686 psi | 70% | 2638 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,706 psi | 81% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,957 psi | 61% | 2510 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,766 psi | 54% | 2451 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,547 psi | 53% | 2418 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,240 psi | 46% | 2333 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,724 psi | 58% | 2556 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,575 psi | 79% | 2707 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 36,999 psi | 58% | 2503 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 37,144 psi | 58% | 2536 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 34,766 psi | 54% | 2451 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 49,255 psi | 77% | 2635 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,579 psi | 57% | 2490 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 48,312 psi | 76% | 2680 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,778 psi | 80% | 2697 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 42,511 psi | 67% | 2569 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,655 psi | 65% | 2549 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,264 psi | 66% | 2526 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,722 psi | 54% | 2526 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 47,964 psi | 75% | 2710 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 44% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,788 psi | 70% | 2572 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,705 psi | 79% | 2661 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,425 psi | 70% | 2582 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,394 psi | 65% | 2513 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 86% | 40,901 psi | 64% | 2598 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,536 psi | 59% | 2566 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 48,196 psi | 76% | 2612 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,514 psi | 73% | 2602 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,168 psi | 47% | 2277 fps | 96% |
| Norma 204 | <<locked>> | 80% | 44,701 psi | 70% | 2608 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 32,909 psi | 52% | 2474 fps | 95.6% |
| Norma MRP | 67.8 gr | 80% | 36,506 psi | 57% | 2520 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 45,774 psi | 72% | 2621 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,797 psi | 59% | 2543 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 44,556 psi | 70% | 2618 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,794 psi | 53% | 2428 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1581 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,615 psi | 73% | 2654 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,875 psi | 70% | 2674 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,546 psi | 49% | 2438 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,569 psi | 68% | 2707 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,722 psi | 84% | 2687 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,306 psi | 63% | 2497 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 38,290 psi | 60% | 2497 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 49,255 psi | 77% | 2635 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,196 psi | 76% | 2612 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,514 psi | 73% | 2602 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,548 psi | 84% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,239 psi | 74% | 2562 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,956 psi | 59% | 2490 fps | 96.3% |
| Somchem S355 | <<locked>> | 80% | 53,432 psi | 84% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,017 psi | 64% | 2484 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 42,931 psi | 67% | 2582 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,856 psi | 61% | 2480 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 51,140 psi | 80% | 2608 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,181 psi | 74% | 2615 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,678 psi | 53% | 2359 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 46,485 psi | 73% | 2618 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,739 psi | 59% | 2493 fps | 99.7% |
| Vihtavuori N560 | 71.1 gr | 84% | 41,989 psi | 66% | 2625 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 88% | 39,450 psi | 62% | 2559 fps | 95% |
| Vihtavuori N568 | <<locked>> | 96% | 44,991 psi | 71% | 2720 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,311 psi | 73% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,472 psi | 76% | 2684 fps | 99.6% |
| Winchester StaBALL HD | 67 gr | 80% | 29,776 psi | 47% | 2438 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,476 psi | 56% | 2405 fps | 95.3% |
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 74 powders for .300 Weath. Mag. loaded with the .308 | 200gr | Sako Hammerhead. Hodgdon Retumbo delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,956 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .300 Weath. Mag. with the .308 | 200gr | Sako Hammerhead 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.