Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Woodleigh PP SN bullet and 73 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% | 55,637 psi | 87% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,985 psi | 89% | 2789 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,201 psi | 85% | 2851 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 90% | 54,099 psi | 85% | 2792 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 55,361 psi | 87% | 2851 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,748 psi | 78% | 2756 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,324 psi | 69% | 2717 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,244 psi | 85% | 2789 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,129 psi | 86% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,232 psi | 90% | 2838 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,405 psi | 87% | 2848 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,623 psi | 89% | 2818 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,927 psi | 88% | 2877 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,348 psi | 90% | 2910 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,000 psi | 89% | 2812 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 54,592 psi | 86% | 2835 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2825 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 55,405 psi | 87% | 2848 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,753 psi | 87% | 2740 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 2838 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 54,955 psi | 86% | 2789 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,667 psi | 90% | 2802 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 55,390 psi | 87% | 2792 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,273 psi | 85% | 2776 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,476 psi | 85% | 2717 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,882 psi | 86% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,230 psi | 87% | 2825 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,334 psi | 90% | 2779 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,058 psi | 89% | 2759 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,319 psi | 90% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,434 psi | 88% | 2779 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 57,174 psi | 90% | 2890 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 57,725 psi | 90% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,014 psi | 88% | 2756 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,797 psi | 89% | 2779 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,607 psi | 86% | 2779 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 39,958 psi | 63% | 2644 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 55,259 psi | 87% | 2867 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,448 psi | 87% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,795 psi | 84% | 2848 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 54,201 psi | 85% | 2779 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,159 psi | 88% | 2844 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 60% | 1768 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,130 psi | 90% | 2815 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,332 psi | 87% | 2841 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2949 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,357 psi | 79% | 2835 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 57,174 psi | 90% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,201 psi | 87% | 2762 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 56,724 psi | 89% | 2825 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 55,753 psi | 87% | 2740 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,725 psi | 90% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,014 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,768 psi | 89% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,043 psi | 89% | 2713 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,289 psi | 88% | 2822 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 56,753 psi | 89% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,710 psi | 89% | 2759 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 55,927 psi | 88% | 2776 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,217 psi | 90% | 2799 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 54,404 psi | 85% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,072 psi | 89% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,695 psi | 89% | 2779 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,188 psi | 88% | 2769 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,347 psi | 87% | 2795 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,100 psi | 86% | 2864 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 98% | 54,984 psi | 86% | 2848 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 2841 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,507 psi | 89% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,187 psi | 86% | 2792 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,317 psi | 85% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,087 psi | 89% | 2795 fps | 99.6% |
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% | 34,867 psi | 55% | 2392 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 46,644 psi | 73% | 2631 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,845 psi | 69% | 2667 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 38,769 psi | 61% | 2507 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 39,668 psi | 62% | 2559 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 94% | 40,727 psi | 64% | 2579 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 90% | 32,155 psi | 50% | 2425 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,599 psi | 70% | 2638 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,401 psi | 81% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,885 psi | 61% | 2507 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,693 psi | 54% | 2451 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,431 psi | 52% | 2415 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,051 psi | 46% | 2326 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,477 psi | 57% | 2549 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,401 psi | 79% | 2700 fps | 95.1% |
| Bofors RP15 | <<locked>> | 84% | 36,912 psi | 58% | 2500 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 37,101 psi | 58% | 2536 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 34,693 psi | 54% | 2451 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 49,153 psi | 77% | 2635 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 90% | 39,030 psi | 61% | 2546 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 48,211 psi | 76% | 2680 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,720 psi | 79% | 2694 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 42,293 psi | 66% | 2562 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,582 psi | 65% | 2549 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,163 psi | 66% | 2523 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,505 psi | 54% | 2520 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 47,703 psi | 75% | 2703 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,512 psi | 70% | 2566 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,459 psi | 79% | 2657 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,367 psi | 70% | 2579 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,191 psi | 65% | 2507 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 86% | 40,669 psi | 64% | 2592 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 48,109 psi | 75% | 2608 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,470 psi | 73% | 2602 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,081 psi | 47% | 2274 fps | 96% |
| Norma 204 | <<locked>> | 80% | 44,628 psi | 70% | 2605 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 32,721 psi | 51% | 2467 fps | 95.4% |
| Norma MRP | 67.5 gr | 80% | 36,260 psi | 57% | 2513 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 45,658 psi | 72% | 2618 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,739 psi | 59% | 2539 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 44,454 psi | 70% | 2615 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,620 psi | 53% | 2425 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,528 psi | 73% | 2651 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,643 psi | 70% | 2667 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,401 psi | 49% | 2431 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,337 psi | 68% | 2703 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 53,606 psi | 84% | 2687 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,219 psi | 63% | 2493 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 38,203 psi | 60% | 2493 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 80% | 49,153 psi | 77% | 2635 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,109 psi | 75% | 2608 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,470 psi | 73% | 2602 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,490 psi | 84% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,963 psi | 74% | 2559 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,869 psi | 59% | 2487 fps | 96.3% |
| Somchem S355 | <<locked>> | 80% | 53,316 psi | 84% | 2680 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,555 psi | 68% | 2536 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 42,627 psi | 67% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,783 psi | 61% | 2477 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 51,053 psi | 80% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,094 psi | 74% | 2612 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,591 psi | 53% | 2356 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 46,427 psi | 73% | 2615 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,478 psi | 59% | 2487 fps | 99.7% |
| Vihtavuori N560 | 70.9 gr | 84% | 41,916 psi | 66% | 2625 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 90% | 41,843 psi | 66% | 2612 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 96% | 44,730 psi | 70% | 2713 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,064 psi | 72% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,211 psi | 76% | 2680 fps | 99.6% |
| Winchester StaBALL HD | 66.8 gr | 80% | 29,704 psi | 47% | 2434 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,418 psi | 56% | 2405 fps | 95.2% |
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 78 powders for .300 Weath. Mag. loaded with the .308 | 200gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,953 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 1:13.5 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 | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.