Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | Prvi Partizan PSP BT bullet and 44 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>> | 84% | 57,595 psi | 90% | 2818 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 2854 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 82% | 56,840 psi | 89% | 2923 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 84% | 57,174 psi | 90% | 2920 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,116 psi | 90% | 2904 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 54,070 psi | 85% | 2966 fps | 99% |
| ADI AR 2225 | <<locked>> | 94% | 57,130 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,740 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,086 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,232 psi | 90% | 2897 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,304 psi | 88% | 2943 fps | 99% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,782 psi | 89% | 2936 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,319 psi | 90% | 2881 fps | 99.2% |
| Bofors RP15 | <<locked>> | 86% | 57,363 psi | 90% | 2907 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,232 psi | 90% | 2920 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,740 psi | 90% | 2913 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,491 psi | 85% | 2867 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,622 psi | 87% | 2851 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,665 psi | 86% | 2838 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,087 psi | 89% | 2986 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,029 psi | 60% | 1896 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,564 psi | 87% | 2828 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 55,898 psi | 88% | 2907 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,404 psi | 85% | 2779 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,144 psi | 88% | 2913 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,970 psi | 88% | 2795 fps | 100% |
| Norma 217 | <<locked>> | 94% | 53,882 psi | 84% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,450 psi | 90% | 2927 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,144 psi | 88% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,044 psi | 61% | 1942 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 53,925 psi | 85% | 2907 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,334 psi | 90% | 2943 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 57,696 psi | 90% | 2884 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,898 psi | 88% | 2864 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,334 psi | 90% | 2881 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 54,534 psi | 85% | 2789 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,099 psi | 85% | 2815 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 82% | 57,609 psi | 90% | 2848 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 57,232 psi | 90% | 2930 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 55,230 psi | 87% | 2874 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 57,392 psi | 90% | 2943 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 90% | 55,129 psi | 86% | 2949 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 53,548 psi | 84% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 53,882 psi | 84% | 2792 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% | 50,299 psi | 79% | 2713 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 43,250 psi | 68% | 2664 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 80% | 52,968 psi | 83% | 2864 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 49,748 psi | 78% | 2802 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 80% | 37,159 psi | 58% | 2552 fps | 97.5% |
| ADI AR 2218 | 89 gr | 88% | 43,047 psi | 67% | 2749 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 34,635 psi | 54% | 2526 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,502 psi | 79% | 2802 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,110 psi | 77% | 2723 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,236 psi | 68% | 2680 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 41,466 psi | 65% | 2674 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 90% | 45,237 psi | 71% | 2736 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,036 psi | 74% | 2707 fps | 97.3% |
| Bofors RP15 | <<locked>> | 80% | 46,905 psi | 74% | 2740 fps | 99.7% |
| Bofors RP30 | <<locked>> | 80% | 40,553 psi | 64% | 2631 fps | 98.4% |
| Bofors RP5 | <<locked>> | 80% | 50,502 psi | 79% | 2802 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 40,611 psi | 64% | 2628 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 80% | 51,982 psi | 81% | 2795 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,053 psi | 80% | 2779 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,583 psi | 67% | 2746 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,587 psi | 45% | 1703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,083 psi | 82% | 2772 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 80% | 48,530 psi | 76% | 2789 fps | 99.5% |
| IMR 7977 Enduron | <<locked>> | 86% | 51,111 psi | 80% | 2726 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 80% | 32,169 psi | 50% | 2444 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 43,221 psi | 68% | 2598 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,692 psi | 51% | 2474 fps | 97.7% |
| Ramshot Grand | <<locked>> | 80% | 49,516 psi | 78% | 2805 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 44,788 psi | 70% | 2677 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,399 psi | 46% | 1745 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,409 psi | 66% | 2720 fps | 100% |
| ReloadSwiss RS 80 | 82.4 gr | 80% | 39,088 psi | 61% | 2615 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 80% | 53,954 psi | 85% | 2831 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,368 psi | 71% | 2684 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,606 psi | 84% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,718 psi | 75% | 2684 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 47,152 psi | 74% | 2694 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 54,099 psi | 85% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 53,505 psi | 84% | 2874 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 80% | 44,817 psi | 70% | 2697 fps | 98.7% |
| Vihtavuori N568 | <<locked>> | 80% | 40,001 psi | 63% | 2631 fps | 96.3% |
| Vihtavuori N570 | 83.2 gr | 84% | 44,150 psi | 69% | 2749 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,530 psi | 78% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,357 psi | 79% | 2740 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 44 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | Prvi Partizan PSP BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,896 fps to 2,986 fps. Accurate 8700 gives the best case fill at 100 %, and 44 of the 44 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 1:11.5 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 | 160gr | Prvi Partizan PSP 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.