Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Norma VULKAN bullet and 75 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% | 55,941 psi | 88% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,363 psi | 90% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,462 psi | 85% | 2858 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 54,418 psi | 85% | 2799 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,854 psi | 88% | 2861 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2762 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,541 psi | 70% | 2723 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,679 psi | 86% | 2795 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,607 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,506 psi | 87% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,508 psi | 90% | 2841 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,912 psi | 88% | 2858 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,159 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,667 psi | 90% | 2917 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,377 psi | 90% | 2822 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 54,882 psi | 86% | 2841 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,330 psi | 82% | 2831 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 55,912 psi | 88% | 2858 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,854 psi | 88% | 2740 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 2848 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,303 psi | 87% | 2795 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,331 psi | 85% | 2753 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 55,680 psi | 87% | 2799 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,578 psi | 86% | 2782 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,839 psi | 86% | 2723 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,143 psi | 86% | 2956 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,593 psi | 87% | 2831 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 58% | 1729 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,638 psi | 90% | 2785 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,392 psi | 90% | 2766 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,667 psi | 90% | 2785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,681 psi | 89% | 2782 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 57,493 psi | 90% | 2897 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,132 psi | 63% | 2625 fps | 96% |
| Lovex S065 | <<locked>> | 84% | 54,607 psi | 86% | 2713 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,289 psi | 88% | 2762 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,101 psi | 89% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,911 psi | 86% | 2782 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,364 psi | 63% | 2654 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 55,811 psi | 87% | 2877 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,753 psi | 87% | 2779 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,375 psi | 85% | 2858 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 54,505 psi | 85% | 2785 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,652 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 60% | 1772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,450 psi | 90% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,666 psi | 87% | 2848 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,043 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,821 psi | 80% | 2844 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 57,319 psi | 90% | 2740 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,492 psi | 87% | 2766 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 57,029 psi | 89% | 2831 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 55,854 psi | 88% | 2740 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,607 psi | 86% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,289 psi | 88% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,884 psi | 89% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,334 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,594 psi | 89% | 2828 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 56,913 psi | 89% | 2733 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,956 psi | 89% | 2762 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 56,304 psi | 88% | 2782 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,551 psi | 90% | 2805 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 54,534 psi | 85% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,421 psi | 90% | 2769 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,203 psi | 90% | 2789 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,507 psi | 89% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,680 psi | 87% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,622 psi | 87% | 2874 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 55,216 psi | 87% | 2851 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,025 psi | 82% | 2851 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,840 psi | 89% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,521 psi | 87% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,969 psi | 86% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,595 psi | 90% | 2802 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% | 34,998 psi | 55% | 2395 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 46,775 psi | 73% | 2635 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 44,121 psi | 69% | 2671 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 39,059 psi | 61% | 2516 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 39,769 psi | 62% | 2559 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 92% | 38,392 psi | 60% | 2530 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 32,358 psi | 51% | 2431 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,363 psi | 62% | 2516 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,773 psi | 70% | 2638 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,779 psi | 81% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,001 psi | 61% | 2510 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,838 psi | 55% | 2454 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,591 psi | 53% | 2421 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,298 psi | 46% | 2336 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,782 psi | 58% | 2556 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,763 psi | 80% | 2710 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 37,217 psi | 58% | 2507 fps | 95.9% |
| Bofors RP30 | <<locked>> | 90% | 37,362 psi | 59% | 2543 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 34,838 psi | 55% | 2454 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 49,298 psi | 77% | 2638 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,608 psi | 57% | 2490 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 48,356 psi | 76% | 2684 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,821 psi | 80% | 2694 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 42,583 psi | 67% | 2569 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,713 psi | 65% | 2552 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,322 psi | 66% | 2530 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,766 psi | 54% | 2526 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 48,022 psi | 75% | 2710 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 44% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,831 psi | 70% | 2575 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,763 psi | 80% | 2664 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,527 psi | 70% | 2582 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,466 psi | 65% | 2513 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 86% | 40,959 psi | 64% | 2598 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,565 psi | 59% | 2569 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 48,240 psi | 76% | 2612 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,572 psi | 73% | 2605 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 30,240 psi | 47% | 2277 fps | 96.1% |
| Norma 204 | <<locked>> | 80% | 44,933 psi | 70% | 2615 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 33,098 psi | 52% | 2480 fps | 95.6% |
| Norma MRP | 67.9 gr | 80% | 36,550 psi | 57% | 2523 fps | 97.3% |
| Norma URP | <<locked>> | 80% | 45,818 psi | 72% | 2621 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,985 psi | 60% | 2546 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 44,788 psi | 70% | 2621 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,852 psi | 53% | 2431 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,442 psi | 45% | 1581 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,876 psi | 73% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,918 psi | 70% | 2674 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,604 psi | 50% | 2438 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,758 psi | 69% | 2713 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,780 psi | 84% | 2690 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,350 psi | 63% | 2497 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 38,334 psi | 60% | 2497 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 49,298 psi | 77% | 2638 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,240 psi | 76% | 2612 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,572 psi | 73% | 2605 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,635 psi | 84% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,253 psi | 74% | 2566 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,029 psi | 60% | 2490 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 53,490 psi | 84% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,060 psi | 64% | 2487 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 42,989 psi | 67% | 2582 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,914 psi | 61% | 2480 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 51,184 psi | 80% | 2608 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,224 psi | 74% | 2615 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,707 psi | 53% | 2359 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 46,731 psi | 73% | 2621 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,826 psi | 59% | 2497 fps | 99.8% |
| Vihtavuori N560 | 71.3 gr | 84% | 42,206 psi | 66% | 2631 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 39,465 psi | 62% | 2562 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 96% | 45,179 psi | 71% | 2723 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,354 psi | 73% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,573 psi | 76% | 2687 fps | 99.6% |
| Winchester StaBALL HD | 67.2 gr | 80% | 29,936 psi | 47% | 2441 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,534 psi | 56% | 2408 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 75 powders for .300 Weath. Mag. loaded with the .308 | 200gr | Norma VULKAN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,956 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 | Norma VULKAN 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.