Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 150gr | Barnes X BT 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 ReloadSwiss RS 80.
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% | 55,245 psi | 87% | 2848 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,882 psi | 86% | 2923 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 82% | 57,537 psi | 90% | 2999 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 84% | 57,363 psi | 90% | 2989 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 92% | 57,334 psi | 90% | 2972 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 54,389 psi | 85% | 3028 fps | 98.5% |
| ADI AR 2225 | <<locked>> | 94% | 57,435 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,621 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,913 psi | 89% | 2900 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,653 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,884 psi | 89% | 3015 fps | 98.6% |
| Alliant Reloder-50 | <<locked>> | 94% | 54,012 psi | 85% | 2956 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,392 psi | 90% | 2940 fps | 98.8% |
| Bofors RP15 | <<locked>> | 84% | 54,302 psi | 85% | 2927 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 54,404 psi | 85% | 2943 fps | 99.9% |
| Bofors RP5 | <<locked>> | 82% | 54,621 psi | 86% | 2933 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,752 psi | 86% | 2936 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,970 psi | 88% | 2917 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 82% | 55,056 psi | 86% | 2904 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,217 psi | 90% | 3061 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,232 psi | 60% | 1952 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 56,028 psi | 88% | 2897 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 84% | 56,173 psi | 88% | 2976 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,797 psi | 89% | 2989 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 57,537 psi | 90% | 2881 fps | 100% |
| Norma 217 | <<locked>> | 94% | 54,911 psi | 86% | 2959 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 53,896 psi | 84% | 2940 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 86% | 56,840 psi | 89% | 2930 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,305 psi | 62% | 1995 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 54,230 psi | 85% | 2986 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 54,099 psi | 85% | 2959 fps | 99.5% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 2933 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 84% | 55,187 psi | 86% | 2861 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 55,129 psi | 86% | 2887 fps | 96.9% |
| Vihtavuori N565 | <<locked>> | 86% | 56,275 psi | 88% | 2953 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 88% | 54,230 psi | 85% | 2959 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 90% | 55,593 psi | 87% | 3022 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 54,302 psi | 85% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 54,694 psi | 86% | 2867 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% | 51,822 psi | 81% | 2799 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 44,353 psi | 70% | 2740 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 80% | 53,751 psi | 84% | 2940 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 50,169 psi | 79% | 2871 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 38,290 psi | 60% | 2631 fps | 97.3% |
| ADI AR 2218 | 88.4 gr | 88% | 44,005 psi | 69% | 2822 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 35,868 psi | 56% | 2615 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 51,213 psi | 80% | 2877 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 50,140 psi | 79% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 44,266 psi | 69% | 2766 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 42,714 psi | 67% | 2759 fps | 95% |
| Alliant Reloder-50 | <<locked>> | 90% | 47,050 psi | 74% | 2831 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,384 psi | 74% | 2769 fps | 96.8% |
| Bofors RP15 | <<locked>> | 80% | 47,906 psi | 75% | 2818 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 41,800 psi | 66% | 2717 fps | 98.2% |
| Bofors RP5 | <<locked>> | 80% | 51,213 psi | 80% | 2877 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 41,582 psi | 65% | 2707 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 52,460 psi | 82% | 2861 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,532 psi | 81% | 2848 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 80% | 43,323 psi | 68% | 2828 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,761 psi | 45% | 1752 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,649 psi | 83% | 2841 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 80% | 49,081 psi | 77% | 2861 fps | 99.3% |
| IMR 8133 Enduron | <<locked>> | 80% | 33,808 psi | 53% | 2546 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 45,092 psi | 71% | 2690 fps | 100% |
| Norma 217 | <<locked>> | 80% | 34,432 psi | 54% | 2575 fps | 97.9% |
| Ramshot Grand | <<locked>> | 80% | 50,067 psi | 78% | 2877 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 45,861 psi | 72% | 2759 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,617 psi | 46% | 1795 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 43,482 psi | 68% | 2805 fps | 100% |
| ReloadSwiss RS 80 | 81.8 gr | 80% | 40,524 psi | 64% | 2703 fps | 96.5% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 46,470 psi | 73% | 2759 fps | 95.3% |
| Vihtavuori N165 | <<locked>> | 80% | 48,559 psi | 76% | 2759 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 48,298 psi | 76% | 2769 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 80% | 46,325 psi | 73% | 2785 fps | 98.6% |
| Vihtavuori N568 | <<locked>> | 80% | 41,249 psi | 65% | 2717 fps | 96.1% |
| Vihtavuori N570 | 82.6 gr | 84% | 45,208 psi | 71% | 2831 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,604 psi | 79% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 51,053 psi | 80% | 2808 fps | 99.9% |
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 | 150gr | Barnes X BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,061 fps. Accurate 8700 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 150.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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, ReloadSwiss RS 80 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 150gr | Barnes X BT 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.