Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 175gr | A-Square MONO RN bullet and 31 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 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 8700 | <<locked>> | 96% | 53,577 psi | 84% | 2749 fps | 99% |
| ADI AR 2217 | <<locked>> | 88% | 55,912 psi | 88% | 2785 fps | 100% |
| ADI AR 2218 | <<locked>> | 92% | 57,377 psi | 90% | 2917 fps | 99.9% |
| ADI AR 2225 | <<locked>> | 90% | 56,608 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 84% | 55,927 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 55,245 psi | 87% | 2825 fps | 99.4% |
| Alliant Reloder-50 | <<locked>> | 92% | 56,202 psi | 88% | 2828 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 55,143 psi | 86% | 2749 fps | 99.5% |
| Bofors RP15 | <<locked>> | 82% | 55,622 psi | 87% | 2776 fps | 100% |
| Bofors RP30 | <<locked>> | 86% | 55,927 psi | 88% | 2795 fps | 100% |
| Hodgdon H1000 | <<locked>> | 86% | 57,072 psi | 89% | 2795 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 56,304 psi | 88% | 2861 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,334 psi | 60% | 1841 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 86% | 55,767 psi | 87% | 2717 fps | 97.3% |
| IMR 8133 Enduron | <<locked>> | 92% | 55,535 psi | 87% | 2799 fps | 100% |
| Lovex D100 | <<locked>> | 88% | 54,085 psi | 85% | 2710 fps | 96.1% |
| Lovex S071 | <<locked>> | 84% | 54,549 psi | 85% | 2674 fps | 100% |
| Norma 217 | <<locked>> | 92% | 57,363 psi | 90% | 2818 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 56,594 psi | 89% | 2844 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 82% | 54,433 psi | 85% | 2726 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,378 psi | 62% | 1880 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 57,203 psi | 90% | 2838 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 56,057 psi | 88% | 2818 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 88% | 54,085 psi | 85% | 2710 fps | 96.1% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 55,114 psi | 86% | 2756 fps | 98.9% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 2795 fps | 98% |
| Vihtavuori N165 | <<locked>> | 82% | 56,130 psi | 88% | 2710 fps | 100% |
| Vihtavuori N170 | <<locked>> | 86% | 55,956 psi | 88% | 2753 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 84% | 57,450 psi | 90% | 2805 fps | 100% |
| Vihtavuori N568 | <<locked>> | 86% | 56,275 psi | 88% | 2825 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 86% | 54,085 psi | 85% | 2831 fps | 99% |
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 8700 | <<locked>> | 88% | 39,885 psi | 63% | 2507 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 80% | 42,090 psi | 66% | 2559 fps | 99.4% |
| ADI AR 2218 | 86.3 gr | 82% | 39,175 psi | 61% | 2575 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 39,465 psi | 62% | 2533 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 48,834 psi | 77% | 2667 fps | 100% |
| Alliant Reloder-33 | 85.7 gr | 80% | 40,843 psi | 64% | 2566 fps | 96.2% |
| Alliant Reloder-50 | <<locked>> | 84% | 41,684 psi | 65% | 2569 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 51,605 psi | 81% | 2697 fps | 99.1% |
| Bofors RP15 | <<locked>> | 80% | 52,170 psi | 82% | 2726 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 45,629 psi | 72% | 2631 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 80% | 45,919 psi | 72% | 2628 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 48,631 psi | 76% | 2743 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,790 psi | 45% | 1650 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 48,965 psi | 77% | 2605 fps | 95.7% |
| IMR 8133 Enduron | 77.3 gr | 80% | 36,782 psi | 58% | 2464 fps | 98.1% |
| Lovex D100 | <<locked>> | 86% | 50,386 psi | 79% | 2648 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 47,892 psi | 75% | 2579 fps | 100% |
| Norma 217 | <<locked>> | 80% | 37,695 psi | 59% | 2490 fps | 99.6% |
| Ramshot LRT | <<locked>> | 90% | 52,649 psi | 83% | 2779 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 80% | 50,502 psi | 79% | 2671 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,631 psi | 46% | 1686 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 48,907 psi | 77% | 2720 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 44,744 psi | 70% | 2635 fps | 99% |
| Shooters World 50 BMG | <<locked>> | 86% | 50,386 psi | 79% | 2648 fps | 95.1% |
| SNPE Vectan SP 13 | <<locked>> | 88% | 41,785 psi | 65% | 2526 fps | 95.7% |
| Vihtavuori 20N29 | <<locked>> | 94% | 45,614 psi | 71% | 2608 fps | 95.2% |
| Vihtavuori N165 | <<locked>> | 80% | 52,518 psi | 82% | 2661 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 45,745 psi | 72% | 2582 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 80% | 50,241 psi | 79% | 2694 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 80% | 45,382 psi | 71% | 2644 fps | 98.7% |
| Vihtavuori N570 | <<locked>> | 80% | 43,598 psi | 68% | 2641 fps | 96.6% |
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 34 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 175gr | A-Square MONO RN. ADI AR 2218 delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,841 fps to 2,917 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 34 of the 34 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 1:16.5 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, IMR 8133 Enduron rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 175gr | A-Square MONO RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.