Load Specifications
Load data in caliber .300 Rem. Ultra Mag. with .310 | 215gr | Rhino Solid Shank bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Alliant Reloder-33 and Hodgdon Retumbo.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 58,784 psi | 90% | 2644 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 45,861 psi | 71% | 2556 fps | 96.2% |
| Accurate MAGPRO | <<locked>> | 86% | 57,798 psi | 89% | 2753 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 84% | 56,028 psi | 86% | 2677 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 58,349 psi | 90% | 2743 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 57,203 psi | 88% | 2723 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 2844 fps | 99.4% |
| ADI AR 2225 | <<locked>> | 98% | 56,246 psi | 87% | 2743 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 55,622 psi | 86% | 2667 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 58,769 psi | 90% | 2736 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,956 psi | 88% | 2648 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 57,464 psi | 88% | 2717 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 57,856 psi | 89% | 2730 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 55,564 psi | 86% | 2759 fps | 98.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 55,390 psi | 85% | 2753 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 58,726 psi | 90% | 2707 fps | 99.2% |
| Bofors RP15 | <<locked>> | 90% | 58,146 psi | 89% | 2726 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 57,276 psi | 88% | 2740 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 58,769 psi | 90% | 2736 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 54,926 psi | 85% | 2690 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 57,276 psi | 88% | 2680 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 56,246 psi | 87% | 2667 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 56,318 psi | 87% | 2585 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 56,666 psi | 87% | 2802 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,768 psi | 58% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,957 psi | 89% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 57,522 psi | 89% | 2661 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 88% | 56,826 psi | 87% | 2730 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 92% | 56,057 psi | 86% | 2612 fps | 96% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 55,317 psi | 85% | 2726 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 56,681 psi | 87% | 2618 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 56,637 psi | 87% | 2746 fps | 100% |
| Norma MRP | <<locked>> | 84% | 55,042 psi | 85% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 58,378 psi | 90% | 2753 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 56,724 psi | 87% | 2684 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,769 psi | 60% | 1745 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 57,769 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 56,898 psi | 88% | 2766 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 84% | 56,434 psi | 87% | 2648 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 55,390 psi | 85% | 2657 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 48,008 psi | 74% | 2569 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 58,711 psi | 90% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 57,812 psi | 89% | 2638 fps | 99.9% |
| Somchem S365 | <<locked>> | 82% | 58,450 psi | 90% | 2638 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 55,666 psi | 86% | 2628 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 55,811 psi | 86% | 2618 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 58,668 psi | 90% | 2697 fps | 98% |
| Vihtavuori N555 | <<locked>> | 84% | 55,201 psi | 85% | 2628 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 58,523 psi | 90% | 2759 fps | 100% |
| Vihtavuori N565 | <<locked>> | 90% | 55,550 psi | 85% | 2697 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 94% | 57,305 psi | 88% | 2766 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 96% | 58,581 psi | 90% | 2825 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 88% | 57,450 psi | 88% | 2733 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 55,448 psi | 85% | 2628 fps | 100% |
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% | 44,889 psi | 69% | 2454 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 42,511 psi | 65% | 2497 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 80% | 46,659 psi | 72% | 2579 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 48,921 psi | 75% | 2572 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 44,179 psi | 68% | 2526 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 80% | 32,938 psi | 51% | 2293 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 92% | 43,033 psi | 66% | 2582 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 30,313 psi | 47% | 2267 fps | 97.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,805 psi | 75% | 2566 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,947 psi | 69% | 2530 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,714 psi | 67% | 2467 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,942 psi | 58% | 2421 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,792 psi | 77% | 2625 fps | 100% |
| Alliant Reloder-33 | 87.6 gr | 88% | 41,089 psi | 63% | 2516 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 94% | 44,150 psi | 68% | 2566 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 42,467 psi | 65% | 2444 fps | 96% |
| Bofors RP15 | <<locked>> | 80% | 41,843 psi | 64% | 2470 fps | 99.1% |
| Bofors RP30 | <<locked>> | 80% | 35,433 psi | 55% | 2362 fps | 97.1% |
| Bofors RP5 | <<locked>> | 80% | 44,947 psi | 69% | 2530 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 35,781 psi | 55% | 2359 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 46,731 psi | 72% | 2523 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,905 psi | 71% | 2507 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,750 psi | 81% | 2539 fps | 100% |
| Hodgdon Retumbo | 73.8 gr | 80% | 37,057 psi | 57% | 2467 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,340 psi | 44% | 1526 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 54,476 psi | 84% | 2598 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,529 psi | 73% | 2510 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 42,931 psi | 66% | 2510 fps | 98.7% |
| IMR 7977 Enduron | <<locked>> | 90% | 52,591 psi | 81% | 2559 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 84% | 31,966 psi | 49% | 2300 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 38,696 psi | 60% | 2346 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 28,050 psi | 43% | 2215 fps | 96% |
| Norma MRP | <<locked>> | 80% | 47,863 psi | 74% | 2592 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 43,308 psi | 67% | 2523 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 80% | 39,001 psi | 60% | 2411 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,138 psi | 45% | 1565 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 36,419 psi | 56% | 2444 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 35,969 psi | 55% | 2402 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 49,661 psi | 76% | 2546 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 48,588 psi | 75% | 2559 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 44,744 psi | 69% | 2516 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,240 psi | 74% | 2556 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 50,633 psi | 78% | 2536 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 54,737 psi | 84% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 48,834 psi | 75% | 2533 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 42,772 psi | 66% | 2425 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 88% | 48,022 psi | 74% | 2533 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 48,457 psi | 75% | 2536 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,442 psi | 73% | 2592 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 80% | 39,552 psi | 61% | 2431 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 37,188 psi | 57% | 2418 fps | 95.5% |
| Vihtavuori N570 | 84.3 gr | 88% | 44,019 psi | 68% | 2589 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,438 psi | 65% | 2530 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,150 psi | 69% | 2474 fps | 99.6% |
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 54 powders for .300 Rem. Ultra Mag. loaded with the .310 | 215gr | Rhino Solid Shank. ADI AR 2218 delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,844 fps. Accurate 8700 gives the best case fill at 100 %, and 54 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 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. Accurate 8700, ADI AR 2218, Alliant Reloder-50 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. Vihtavuori N570, Alliant Reloder-33, Hodgdon Retumbo rank at the top here: for .300 Rem. Ultra 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.