Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | Barnes XLC S bullet and 40 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 Alliant Reloder-33.
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% | 56,985 psi | 89% | 2799 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2887 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 82% | 55,506 psi | 87% | 2887 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 55,419 psi | 87% | 2877 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 56,463 psi | 88% | 2999 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 92% | 55,680 psi | 87% | 2900 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,463 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 55,071 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 56,014 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 54,911 psi | 86% | 2917 fps | 98.7% |
| Alliant Reloder-50 | <<locked>> | 94% | 56,260 psi | 88% | 2927 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 55,317 psi | 87% | 2841 fps | 98.9% |
| Bofors RP15 | <<locked>> | 84% | 56,144 psi | 88% | 2881 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 56,260 psi | 88% | 2900 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,463 psi | 88% | 2887 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 56,753 psi | 89% | 2894 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 57,682 psi | 90% | 2874 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 56,724 psi | 89% | 2858 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 86% | 55,506 psi | 87% | 2959 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,261 psi | 60% | 1893 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 57,392 psi | 90% | 2848 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 82% | 54,346 psi | 85% | 2874 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,405 psi | 88% | 2802 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 94% | 55,172 psi | 86% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 86% | 55,622 psi | 87% | 2782 fps | 100% |
| Norma 217 | <<locked>> | 94% | 56,942 psi | 89% | 2917 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 55,825 psi | 87% | 2897 fps | 100% |
| Ramshot Magnum | <<locked>> | 84% | 54,824 psi | 86% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,363 psi | 62% | 1936 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 56,550 psi | 89% | 2943 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 56,130 psi | 88% | 2920 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 55,013 psi | 86% | 2844 fps | 98% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 52,359 psi | 82% | 2815 fps | 96% |
| Vihtavuori N165 | <<locked>> | 84% | 56,710 psi | 89% | 2812 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,637 psi | 89% | 2844 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 84% | 54,534 psi | 85% | 2854 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 88% | 56,289 psi | 88% | 2923 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 88% | 53,896 psi | 84% | 2923 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 56,695 psi | 89% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,202 psi | 88% | 2818 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% | 53,432 psi | 84% | 2753 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 42,946 psi | 67% | 2651 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 80% | 51,837 psi | 81% | 2831 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 80% | 39,653 psi | 62% | 2602 fps | 98.3% |
| ADI AR 2218 | 85.4 gr | 86% | 42,467 psi | 67% | 2730 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 37,275 psi | 58% | 2585 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 52,895 psi | 83% | 2831 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,750 psi | 81% | 2753 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 45,890 psi | 72% | 2723 fps | 100% |
| Alliant Reloder-33 | 82.9 gr | 82% | 41,321 psi | 65% | 2667 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 86% | 42,496 psi | 67% | 2680 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 48,646 psi | 76% | 2730 fps | 97.7% |
| Bofors RP15 | <<locked>> | 80% | 49,472 psi | 78% | 2779 fps | 99.9% |
| Bofors RP30 | <<locked>> | 80% | 43,366 psi | 68% | 2680 fps | 99% |
| Bofors RP5 | <<locked>> | 80% | 52,895 psi | 83% | 2831 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 42,960 psi | 67% | 2667 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 80% | 54,041 psi | 85% | 2818 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,142 psi | 83% | 2805 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 80% | 45,121 psi | 71% | 2792 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,819 psi | 45% | 1699 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 54,070 psi | 85% | 2795 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 80% | 50,778 psi | 80% | 2818 fps | 99.7% |
| IMR 7977 Enduron | <<locked>> | 86% | 52,866 psi | 83% | 2746 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 80% | 35,215 psi | 55% | 2520 fps | 96.7% |
| Lovex S071 | <<locked>> | 80% | 46,427 psi | 73% | 2641 fps | 100% |
| Norma 217 | <<locked>> | 80% | 35,984 psi | 56% | 2549 fps | 98.8% |
| Ramshot Grand | <<locked>> | 80% | 52,040 psi | 82% | 2838 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 47,471 psi | 74% | 2720 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,704 psi | 47% | 1739 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 45,339 psi | 71% | 2772 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 42,163 psi | 66% | 2677 fps | 97.7% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 45,121 psi | 71% | 2674 fps | 95.6% |
| Vihtavuori 20N29 | <<locked>> | 98% | 49,037 psi | 77% | 2759 fps | 95% |
| Vihtavuori N165 | <<locked>> | 80% | 50,038 psi | 78% | 2713 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 46,775 psi | 73% | 2677 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 80% | 47,805 psi | 75% | 2746 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 80% | 42,743 psi | 67% | 2684 fps | 97.3% |
| Vihtavuori N570 | 79.8 gr | 82% | 43,932 psi | 69% | 2740 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 52,678 psi | 83% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,634 psi | 82% | 2766 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 40 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | Barnes XLC S. ADI AR 2218 delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,893 fps to 2,999 fps. Accurate 8700 gives the best case fill at 100 %, and 40 of the 40 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 160.0 gr projectile in 0.284" calls for a 1:10.0 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, Alliant Reloder-33 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 160gr | Barnes XLC S 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.