Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 173gr | Sellier & Bellot SPCE bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and IMR 8133 Enduron.
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>> | 82% | 56,318 psi | 88% | 2713 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 53,679 psi | 84% | 2766 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 82% | 56,173 psi | 88% | 2818 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 56,362 psi | 88% | 2805 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 57,580 psi | 90% | 2940 fps | 99.8% |
| ADI AR 2225 | <<locked>> | 92% | 56,521 psi | 89% | 2825 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,782 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 55,114 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 56,478 psi | 89% | 2792 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 55,419 psi | 87% | 2848 fps | 99.3% |
| Alliant Reloder-50 | <<locked>> | 94% | 56,072 psi | 88% | 2844 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 56,014 psi | 88% | 2776 fps | 99.4% |
| Bofors RP15 | <<locked>> | 84% | 56,434 psi | 88% | 2805 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 56,391 psi | 88% | 2818 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,782 psi | 89% | 2812 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 57,551 psi | 90% | 2818 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 57,276 psi | 90% | 2789 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 56,434 psi | 88% | 2884 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,247 psi | 60% | 1834 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 54,984 psi | 86% | 2802 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,840 psi | 89% | 2740 fps | 97.2% |
| IMR 8133 Enduron | <<locked>> | 94% | 55,492 psi | 87% | 2818 fps | 100% |
| Lovex S071 | <<locked>> | 86% | 55,129 psi | 86% | 2697 fps | 100% |
| Norma 217 | <<locked>> | 94% | 57,276 psi | 90% | 2838 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 56,463 psi | 88% | 2825 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 56,927 psi | 89% | 2864 fps | 96% |
| Ramshot Magnum | <<locked>> | 84% | 54,984 psi | 86% | 2749 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,305 psi | 62% | 1877 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 57,421 psi | 90% | 2867 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 56,333 psi | 88% | 2844 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 55,259 psi | 87% | 2772 fps | 98.7% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 52,620 psi | 82% | 2749 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 84% | 56,971 psi | 89% | 2736 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,724 psi | 89% | 2776 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 84% | 54,331 psi | 85% | 2776 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 56,666 psi | 89% | 2848 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 88% | 54,375 psi | 85% | 2854 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 82% | 57,101 psi | 89% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,536 psi | 89% | 2746 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% | 52,634 psi | 82% | 2664 fps | 100% |
| Accurate 8700 | <<locked>> | 90% | 39,827 psi | 62% | 2523 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 80% | 52,402 psi | 82% | 2759 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 39,421 psi | 62% | 2523 fps | 98.8% |
| ADI AR 2218 | 84.6 gr | 84% | 39,378 psi | 62% | 2592 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 36,767 psi | 58% | 2500 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 53,113 psi | 83% | 2756 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,706 psi | 81% | 2671 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 45,876 psi | 72% | 2638 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 41,031 psi | 64% | 2589 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 86% | 41,582 psi | 65% | 2585 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 49,066 psi | 77% | 2667 fps | 98.4% |
| Bofors RP15 | <<locked>> | 80% | 49,356 psi | 77% | 2697 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 42,844 psi | 67% | 2595 fps | 99.3% |
| Bofors RP5 | <<locked>> | 80% | 53,113 psi | 83% | 2756 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 43,091 psi | 68% | 2595 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,534 psi | 84% | 2733 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 45,310 psi | 71% | 2710 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,732 psi | 45% | 1644 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 51,256 psi | 80% | 2749 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 49,980 psi | 78% | 2631 fps | 95.6% |
| IMR 8133 Enduron | 74 gr | 80% | 34,345 psi | 54% | 2425 fps | 97% |
| Lovex S071 | <<locked>> | 80% | 45,455 psi | 71% | 2556 fps | 100% |
| Norma 217 | <<locked>> | 80% | 35,085 psi | 55% | 2454 fps | 99% |
| Ramshot Grand | <<locked>> | 80% | 52,504 psi | 82% | 2766 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 52,939 psi | 83% | 2802 fps | 95% |
| Ramshot Magnum | <<locked>> | 80% | 47,369 psi | 74% | 2641 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,588 psi | 46% | 1683 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 45,484 psi | 71% | 2687 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 41,611 psi | 65% | 2592 fps | 98.1% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 41,800 psi | 66% | 2543 fps | 95.3% |
| Vihtavuori 20N29 | <<locked>> | 98% | 48,921 psi | 77% | 2687 fps | 95.9% |
| Vihtavuori N165 | <<locked>> | 80% | 49,893 psi | 78% | 2635 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 43,192 psi | 68% | 2546 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 80% | 47,369 psi | 74% | 2664 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 80% | 42,424 psi | 66% | 2605 fps | 97.8% |
| Vihtavuori N570 | 78.9 gr | 80% | 40,567 psi | 64% | 2595 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 52,910 psi | 83% | 2753 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,823 psi | 83% | 2694 fps | 100% |
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 39 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 173gr | Sellier & Bellot SPCE. ADI AR 2218 delivers the highest muzzle velocity at 2,940 fps; across all powders the maximum-charge window runs from 1,834 fps to 2,940 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 173.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori 20N29 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. ADI AR 2218, Vihtavuori N570, IMR 8133 Enduron rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 173gr | Sellier & Bellot SPCE 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.