Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 175gr | Speer Magnum Tip Soft Point bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Alliant Reloder-33 and Alliant Reloder-50.
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% | 57,246 psi | 90% | 2710 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 54,839 psi | 86% | 2772 fps | 99% |
| ADI AR 2213 | <<locked>> | 82% | 57,174 psi | 90% | 2818 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 57,392 psi | 90% | 2808 fps | 100% |
| ADI AR 2218 | <<locked>> | 92% | 54,549 psi | 85% | 2877 fps | 99.6% |
| ADI AR 2225 | <<locked>> | 90% | 53,940 psi | 85% | 2779 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 56,144 psi | 88% | 2713 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 57,566 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 56,652 psi | 89% | 2851 fps | 99.5% |
| Alliant Reloder-50 | <<locked>> | 94% | 57,522 psi | 90% | 2854 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 56,985 psi | 89% | 2779 fps | 99.6% |
| Bofors RP15 | <<locked>> | 84% | 57,188 psi | 90% | 2802 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 57,392 psi | 90% | 2822 fps | 100% |
| Hodgdon H1000 | <<locked>> | 86% | 54,592 psi | 86% | 2766 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 53,838 psi | 84% | 2831 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,159 psi | 60% | 1827 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 56,014 psi | 88% | 2805 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 57,609 psi | 90% | 2743 fps | 97.5% |
| IMR 8133 Enduron | <<locked>> | 94% | 56,724 psi | 89% | 2822 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 55,912 psi | 88% | 2736 fps | 96.3% |
| Lovex S071 | <<locked>> | 86% | 56,072 psi | 88% | 2697 fps | 100% |
| Norma 217 | <<locked>> | 92% | 54,650 psi | 86% | 2785 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 57,551 psi | 90% | 2825 fps | 100% |
| Ramshot Magnum | <<locked>> | 84% | 56,231 psi | 88% | 2756 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,378 psi | 62% | 1870 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 54,375 psi | 85% | 2808 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 53,563 psi | 84% | 2789 fps | 99.9% |
| Shooters World 50 BMG | <<locked>> | 90% | 55,912 psi | 88% | 2736 fps | 96.3% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 56,347 psi | 88% | 2779 fps | 98.9% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2753 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 82% | 54,230 psi | 85% | 2687 fps | 100% |
| Vihtavuori N170 | <<locked>> | 86% | 53,969 psi | 85% | 2720 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 84% | 55,317 psi | 87% | 2779 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 57,682 psi | 90% | 2848 fps | 100% |
| Vihtavuori N570 | <<locked>> | 88% | 55,593 psi | 87% | 2858 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 82% | 57,435 psi | 90% | 2743 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% | 53,577 psi | 84% | 2664 fps | 100% |
| Accurate 8700 | <<locked>> | 90% | 40,828 psi | 64% | 2533 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 80% | 53,185 psi | 83% | 2756 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 40,292 psi | 63% | 2530 fps | 99.1% |
| ADI AR 2218 | 85.3 gr | 84% | 40,190 psi | 63% | 2602 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 37,637 psi | 59% | 2503 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 52,475 psi | 82% | 2667 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 46,847 psi | 73% | 2641 fps | 100% |
| Alliant Reloder-33 | 82.8 gr | 80% | 38,943 psi | 61% | 2530 fps | 95.3% |
| Alliant Reloder-50 | 86.7 gr | 84% | 39,668 psi | 62% | 2533 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 49,995 psi | 78% | 2671 fps | 98.7% |
| Bofors RP15 | <<locked>> | 80% | 50,270 psi | 79% | 2697 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 43,743 psi | 69% | 2598 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 44,034 psi | 69% | 2598 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 80% | 46,398 psi | 73% | 2713 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,732 psi | 45% | 1640 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 52,069 psi | 82% | 2746 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 47,514 psi | 74% | 2579 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 80% | 35,041 psi | 55% | 2428 fps | 97.4% |
| Lovex D100 | <<locked>> | 88% | 51,982 psi | 81% | 2677 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 46,340 psi | 73% | 2556 fps | 100% |
| Norma 217 | <<locked>> | 80% | 35,824 psi | 56% | 2457 fps | 99.3% |
| Ramshot Grand | <<locked>> | 80% | 53,577 psi | 84% | 2769 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 48,312 psi | 76% | 2641 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,588 psi | 46% | 1677 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 46,543 psi | 73% | 2694 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 42,699 psi | 67% | 2598 fps | 98.5% |
| Shooters World 50 BMG | <<locked>> | 88% | 51,982 psi | 81% | 2677 fps | 95.3% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 42,757 psi | 67% | 2549 fps | 95.9% |
| Vihtavuori 20N29 | <<locked>> | 96% | 46,470 psi | 73% | 2631 fps | 95.3% |
| Vihtavuori N165 | <<locked>> | 80% | 50,778 psi | 80% | 2638 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 43,961 psi | 69% | 2549 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 80% | 48,298 psi | 76% | 2667 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 80% | 43,308 psi | 68% | 2608 fps | 98.2% |
| Vihtavuori N570 | <<locked>> | 80% | 41,481 psi | 65% | 2602 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 53,519 psi | 84% | 2690 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 36 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 175gr | Speer Magnum Tip Soft Point. ADI AR 2218 delivers the highest muzzle velocity at 2,877 fps; across all powders the maximum-charge window runs from 1,827 fps to 2,877 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 36 of the 36 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 175.0 gr projectile in 0.284" calls for a 1:12.5 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, Alliant Reloder-33, Alliant Reloder-50 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 175gr | Speer Magnum Tip Soft Point 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.