Load Specifications
Load data in caliber .300 Weath. Mag. with .310 | 215gr | Rhino Solid Shank bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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>> | 92% | 53,998 psi | 85% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,303 psi | 87% | 2664 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,318 psi | 88% | 2789 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 90% | 55,854 psi | 88% | 2723 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 57,479 psi | 90% | 2789 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,634 psi | 81% | 2697 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,180 psi | 72% | 2664 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,246 psi | 88% | 2717 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,363 psi | 90% | 2726 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,434 psi | 87% | 2713 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,551 psi | 90% | 2782 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,317 psi | 87% | 2697 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,433 psi | 85% | 2756 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,637 psi | 87% | 2782 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,143 psi | 86% | 2694 fps | 97.1% |
| Bofors RP15 | <<locked>> | 96% | 56,507 psi | 89% | 2766 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2762 fps | 99.5% |
| Bofors RP5 | <<locked>> | 94% | 57,551 psi | 90% | 2782 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 57,377 psi | 90% | 2664 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,869 psi | 89% | 2776 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 56,768 psi | 89% | 2717 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,680 psi | 87% | 2674 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 57,334 psi | 90% | 2726 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,130 psi | 88% | 2710 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,507 psi | 89% | 2641 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,232 psi | 90% | 2887 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,276 psi | 90% | 2753 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 58% | 1660 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,448 psi | 87% | 2654 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,129 psi | 86% | 2631 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,535 psi | 87% | 2657 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,520 psi | 85% | 2654 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 55,390 psi | 87% | 2766 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,655 psi | 65% | 2572 fps | 97.3% |
| Lovex S065 | <<locked>> | 84% | 55,854 psi | 88% | 2631 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,580 psi | 90% | 2680 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,158 psi | 86% | 2657 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,463 psi | 88% | 2707 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 41,843 psi | 66% | 2595 fps | 99.2% |
| Norma MRP | <<locked>> | 92% | 57,595 psi | 90% | 2802 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,174 psi | 90% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,246 psi | 88% | 2789 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 56,101 psi | 88% | 2707 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,505 psi | 85% | 2723 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,087 psi | 60% | 1699 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,317 psi | 87% | 2687 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,435 psi | 90% | 2766 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,795 psi | 84% | 2825 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 2782 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 90% | 56,971 psi | 89% | 2694 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 90% | 55,100 psi | 86% | 2703 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 57,377 psi | 90% | 2664 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,854 psi | 88% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,580 psi | 90% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,940 psi | 86% | 2589 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,679 psi | 86% | 2700 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 54,868 psi | 86% | 2638 fps | 98.8% |
| Somchem S365 | <<locked>> | 86% | 54,259 psi | 85% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,506 psi | 87% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 55,985 psi | 88% | 2575 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,390 psi | 87% | 2641 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,085 psi | 86% | 2661 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,462 psi | 85% | 2644 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,566 psi | 90% | 2723 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,319 psi | 90% | 2802 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 98% | 57,246 psi | 90% | 2785 fps | 99.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,896 psi | 84% | 2785 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,534 psi | 85% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,000 psi | 89% | 2720 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,159 psi | 90% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,376 psi | 87% | 2674 fps | 99.8% |
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% | 36,187 psi | 57% | 2336 fps | 98.7% |
| Accurate 4350 | <<locked>> | 80% | 48,283 psi | 76% | 2562 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 42,656 psi | 67% | 2556 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 40,219 psi | 63% | 2454 fps | 97.5% |
| ADI AR 2213 | <<locked>> | 82% | 38,348 psi | 60% | 2444 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 37,115 psi | 58% | 2418 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 29,356 psi | 46% | 2270 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,325 psi | 73% | 2569 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,388 psi | 84% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,219 psi | 63% | 2448 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,071 psi | 57% | 2398 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,925 psi | 55% | 2362 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,240 psi | 47% | 2283 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,334 psi | 60% | 2500 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,834 psi | 77% | 2589 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 33,576 psi | 53% | 2336 fps | 95.2% |
| Bofors RP30 | <<locked>> | 88% | 36,100 psi | 57% | 2428 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 36,071 psi | 57% | 2398 fps | 96.4% |
| Bofors RP7 | <<locked>> | 80% | 50,691 psi | 79% | 2566 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 35,331 psi | 55% | 2379 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 49,864 psi | 78% | 2612 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 52,228 psi | 82% | 2621 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 40,901 psi | 64% | 2451 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,234 psi | 63% | 2438 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,714 psi | 69% | 2457 fps | 100% |
| Hodgdon Retumbo | 66.7 gr | 84% | 33,591 psi | 53% | 2415 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 49,545 psi | 78% | 2641 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 44% | 1483 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,035 psi | 72% | 2503 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,953 psi | 81% | 2585 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,861 psi | 72% | 2510 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,987 psi | 63% | 2398 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 36,999 psi | 58% | 2425 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,521 psi | 57% | 2461 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 49,603 psi | 78% | 2539 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,790 psi | 75% | 2530 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 31,314 psi | 49% | 2224 fps | 97.3% |
| Norma 204 | <<locked>> | 80% | 46,166 psi | 72% | 2543 fps | 98.7% |
| Norma 217 | <<locked>> | 90% | 30,037 psi | 47% | 2316 fps | 95% |
| Norma MRP | <<locked>> | 80% | 37,855 psi | 59% | 2464 fps | 98.3% |
| Norma URP | <<locked>> | 80% | 47,152 psi | 74% | 2549 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,637 psi | 57% | 2434 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 46,050 psi | 72% | 2552 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 32,590 psi | 51% | 2320 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 45% | 1519 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,138 psi | 75% | 2582 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,267 psi | 73% | 2602 fps | 100% |
| ReloadSwiss RS 76 | 69.7 gr | 82% | 30,414 psi | 48% | 2329 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,163 psi | 66% | 2595 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 41,452 psi | 65% | 2434 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 80% | 39,566 psi | 62% | 2434 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 80% | 50,691 psi | 79% | 2566 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,603 psi | 78% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,790 psi | 75% | 2530 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,515 psi | 76% | 2493 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,247 psi | 62% | 2431 fps | 97.4% |
| Somchem S361 | <<locked>> | 80% | 42,076 psi | 66% | 2421 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 44,469 psi | 70% | 2510 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,132 psi | 63% | 2421 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 80% | 52,475 psi | 82% | 2530 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,602 psi | 76% | 2543 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,838 psi | 55% | 2303 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 47,964 psi | 75% | 2546 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,088 psi | 61% | 2431 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,971 psi | 60% | 2454 fps | 95% |
| Vihtavuori N565 | <<locked>> | 86% | 38,189 psi | 60% | 2451 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 43,555 psi | 68% | 2605 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,616 psi | 75% | 2503 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,864 psi | 78% | 2612 fps | 99.9% |
| Winchester StaBALL HD | 65.3 gr | 80% | 31,038 psi | 49% | 2392 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,753 psi | 58% | 2352 fps | 96.5% |
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 71 powders for .300 Weath. Mag. loaded with the .310 | 215gr | Rhino Solid Shank. Hodgdon Retumbo delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,887 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 215.0 gr projectile in 0.31" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for .300 Weath. Mag. with the .310 | 215gr | 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.