Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Rhino Solid Shank 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% | 55,317 psi | 87% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,826 psi | 89% | 2785 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 53,679 psi | 84% | 2841 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 57,537 psi | 90% | 2740 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,421 psi | 90% | 2841 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 55,042 psi | 86% | 2844 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2746 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,092 psi | 69% | 2710 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,595 psi | 90% | 2838 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,508 psi | 90% | 2835 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,955 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,913 psi | 89% | 2831 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,100 psi | 86% | 2841 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,275 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,768 psi | 89% | 2900 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,797 psi | 89% | 2808 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 54,288 psi | 85% | 2828 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2818 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 55,100 psi | 86% | 2841 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,419 psi | 87% | 2733 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2835 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 54,636 psi | 86% | 2782 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,319 psi | 90% | 2795 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 55,100 psi | 86% | 2789 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,653 psi | 90% | 2825 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,360 psi | 85% | 2713 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,563 psi | 86% | 2946 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,911 psi | 86% | 2818 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,159 psi | 58% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,000 psi | 89% | 2772 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,710 psi | 89% | 2753 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,971 psi | 89% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,144 psi | 88% | 2769 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 96% | 56,623 psi | 89% | 2881 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 57,580 psi | 90% | 2753 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,637 psi | 87% | 2749 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,246 psi | 88% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,273 psi | 85% | 2769 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,668 psi | 62% | 2638 fps | 98.1% |
| Norma MRP | <<locked>> | 92% | 54,940 psi | 86% | 2861 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,056 psi | 86% | 2766 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,653 psi | 90% | 2907 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 57,580 psi | 90% | 2825 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,811 psi | 87% | 2838 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,753 psi | 89% | 2808 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,984 psi | 86% | 2835 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2943 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,908 psi | 78% | 2825 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 56,753 psi | 89% | 2730 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,085 psi | 86% | 2759 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 56,391 psi | 88% | 2818 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 55,419 psi | 87% | 2733 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,580 psi | 90% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,637 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,623 psi | 89% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,710 psi | 89% | 2710 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,941 psi | 88% | 2815 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 56,405 psi | 88% | 2723 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,463 psi | 88% | 2753 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 55,550 psi | 87% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,913 psi | 89% | 2792 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,580 psi | 90% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,956 psi | 89% | 2759 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,420 psi | 88% | 2776 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,057 psi | 88% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,969 psi | 86% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,795 psi | 86% | 2858 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 54,665 psi | 86% | 2841 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,256 psi | 80% | 2835 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,202 psi | 88% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,868 psi | 86% | 2785 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,954 psi | 85% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,797 psi | 89% | 2789 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% | 34,563 psi | 54% | 2385 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 46,253 psi | 72% | 2625 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,540 psi | 68% | 2657 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 54,027 psi | 85% | 2687 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,638 psi | 61% | 2507 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 39,378 psi | 62% | 2549 fps | 95% |
| ADI AR 2217 | <<locked>> | 94% | 40,495 psi | 63% | 2572 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 31,937 psi | 50% | 2418 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,928 psi | 61% | 2507 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,411 psi | 70% | 2631 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,256 psi | 80% | 2743 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,580 psi | 60% | 2500 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,941 psi | 58% | 2503 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,141 psi | 52% | 2408 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,950 psi | 45% | 2323 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,332 psi | 57% | 2546 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,212 psi | 79% | 2697 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 36,622 psi | 57% | 2493 fps | 95.6% |
| Bofors RP30 | <<locked>> | 92% | 39,349 psi | 62% | 2585 fps | 95.9% |
| Bofors RP5 | <<locked>> | 82% | 36,941 psi | 58% | 2503 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 48,834 psi | 77% | 2625 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 38,783 psi | 61% | 2539 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 47,848 psi | 75% | 2674 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,357 psi | 79% | 2687 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 41,989 psi | 66% | 2556 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,292 psi | 65% | 2543 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,814 psi | 66% | 2516 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,272 psi | 54% | 2510 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 47,369 psi | 74% | 2697 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,382 psi | 70% | 2566 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,299 psi | 79% | 2651 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,034 psi | 69% | 2572 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,060 psi | 64% | 2503 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 86% | 40,553 psi | 64% | 2589 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,790 psi | 75% | 2602 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,108 psi | 72% | 2592 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,805 psi | 47% | 2264 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 44,324 psi | 69% | 2598 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 32,489 psi | 51% | 2461 fps | 95.3% |
| Norma MRP | 67.1 gr | 80% | 35,969 psi | 56% | 2507 fps | 97% |
| Norma URP | <<locked>> | 80% | 45,324 psi | 71% | 2612 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,263 psi | 63% | 2595 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 44,121 psi | 69% | 2608 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,388 psi | 52% | 2418 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,166 psi | 72% | 2644 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,309 psi | 69% | 2661 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,373 psi | 52% | 2487 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,931 psi | 67% | 2694 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 53,229 psi | 83% | 2680 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,929 psi | 63% | 2487 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 37,884 psi | 59% | 2484 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 48,834 psi | 77% | 2625 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,790 psi | 75% | 2602 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,108 psi | 72% | 2592 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,113 psi | 83% | 2559 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,862 psi | 73% | 2556 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,565 psi | 59% | 2480 fps | 96.1% |
| Somchem S355 | <<locked>> | 80% | 52,953 psi | 83% | 2674 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,323 psi | 68% | 2530 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 42,453 psi | 67% | 2569 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,479 psi | 60% | 2470 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 50,691 psi | 79% | 2602 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,746 psi | 73% | 2605 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,330 psi | 52% | 2349 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 46,079 psi | 72% | 2608 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,333 psi | 59% | 2484 fps | 99.7% |
| Vihtavuori N560 | 70.5 gr | 84% | 41,626 psi | 65% | 2618 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 90% | 41,553 psi | 65% | 2605 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 44,483 psi | 70% | 2710 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,774 psi | 72% | 2569 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,066 psi | 75% | 2674 fps | 99.5% |
| Winchester StaBALL HD | 66.4 gr | 80% | 29,443 psi | 46% | 2425 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,143 psi | 55% | 2395 fps | 95.1% |
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 | Rhino Solid Shank. Hodgdon Retumbo delivers the highest muzzle velocity at 2,946 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,946 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 1:13.0 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 | Rhino Solid Shank 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.