Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | Sierra Tipped MatchKing bullet and 49 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>> | 84% | 56,391 psi | 88% | 2802 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,866 psi | 83% | 2838 fps | 98% |
| Accurate MAGPRO | <<locked>> | 82% | 55,477 psi | 87% | 2907 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 57,014 psi | 89% | 2887 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,970 psi | 88% | 2904 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,782 psi | 87% | 2887 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,753 psi | 89% | 3012 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 94% | 55,709 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,608 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,579 psi | 89% | 2900 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,013 psi | 86% | 2808 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,970 psi | 88% | 2881 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,708 psi | 86% | 2923 fps | 98.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,172 psi | 86% | 2917 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,289 psi | 88% | 2864 fps | 99% |
| Bofors RP15 | <<locked>> | 86% | 56,173 psi | 88% | 2890 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,898 psi | 88% | 2904 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,579 psi | 89% | 2900 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,145 psi | 90% | 2904 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,708 psi | 86% | 2838 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,334 psi | 90% | 2877 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,695 psi | 87% | 2969 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,971 psi | 60% | 1893 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,708 psi | 86% | 2815 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 54,636 psi | 86% | 2890 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,203 psi | 90% | 2825 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,636 psi | 86% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,984 psi | 86% | 2785 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,188 psi | 88% | 2917 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,971 psi | 89% | 2913 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,159 psi | 88% | 2910 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,766 psi | 86% | 2838 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,986 psi | 61% | 1936 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,710 psi | 89% | 2953 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,840 psi | 88% | 2927 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 57,101 psi | 89% | 2854 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,463 psi | 88% | 2871 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 2844 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,101 psi | 88% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,913 psi | 89% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,159 psi | 90% | 2828 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,637 psi | 89% | 2854 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 56,521 psi | 89% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,246 psi | 88% | 2920 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 88% | 57,682 psi | 90% | 2913 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 56,086 psi | 88% | 2930 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 92% | 57,725 psi | 90% | 2995 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,101 psi | 88% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,782 psi | 89% | 2835 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% | 49,298 psi | 77% | 2700 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,426 psi | 71% | 2707 fps | 96.1% |
| Accurate MAGPRO | <<locked>> | 80% | 51,822 psi | 81% | 2848 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 80% | 53,403 psi | 84% | 2835 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,718 psi | 76% | 2785 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 80% | 36,463 psi | 57% | 2539 fps | 97.2% |
| ADI AR 2218 | 87.4 gr | 88% | 42,032 psi | 66% | 2726 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 33,794 psi | 53% | 2510 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,127 psi | 83% | 2822 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,472 psi | 78% | 2789 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,037 psi | 75% | 2710 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,380 psi | 66% | 2667 fps | 100% |
| Alliant Reloder-33 | 87 gr | 86% | 43,642 psi | 68% | 2723 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 90% | 43,918 psi | 69% | 2717 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,137 psi | 72% | 2690 fps | 97% |
| Bofors RP15 | <<locked>> | 80% | 46,079 psi | 72% | 2726 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 39,595 psi | 62% | 2615 fps | 98.1% |
| Bofors RP5 | <<locked>> | 80% | 49,472 psi | 78% | 2789 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 39,711 psi | 62% | 2612 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 51,039 psi | 80% | 2779 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,125 psi | 79% | 2766 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,481 psi | 65% | 2726 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,500 psi | 45% | 1696 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,387 psi | 81% | 2762 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 47,500 psi | 74% | 2772 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,505 psi | 84% | 2766 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 82% | 33,678 psi | 53% | 2490 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 42,409 psi | 66% | 2585 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,763 psi | 50% | 2454 fps | 97.3% |
| Norma MRP | <<locked>> | 80% | 52,968 psi | 83% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,414 psi | 76% | 2789 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 43,685 psi | 68% | 2664 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,312 psi | 46% | 1739 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,205 psi | 65% | 2700 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,029 psi | 60% | 2595 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 53,577 psi | 84% | 2805 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 52,895 psi | 83% | 2815 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,164 psi | 69% | 2664 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,547 psi | 82% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,243 psi | 83% | 2785 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,804 psi | 73% | 2671 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 46,238 psi | 72% | 2677 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 52,982 psi | 83% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,301 psi | 82% | 2858 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 43,903 psi | 69% | 2684 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 38,957 psi | 61% | 2612 fps | 95.9% |
| Vihtavuori N570 | 81.7 gr | 84% | 43,062 psi | 67% | 2730 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,312 psi | 76% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,429 psi | 77% | 2723 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 49 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | Sierra Tipped MatchKing. ADI AR 2218 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,012 fps. Accurate 8700 gives the best case fill at 100 %, and 49 of the 49 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 | Sierra Tipped MatchKing 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.