Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 166gr | Peregrine VRG-2 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 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% | 57,188 psi | 90% | 2776 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,433 psi | 85% | 2822 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 82% | 56,782 psi | 89% | 2887 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 84% | 57,479 psi | 90% | 2884 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,522 psi | 90% | 2871 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 54,244 psi | 85% | 2933 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 94% | 57,493 psi | 90% | 2890 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,128 psi | 85% | 2822 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,173 psi | 88% | 2782 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,464 psi | 90% | 2858 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,362 psi | 88% | 2907 fps | 99.2% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,565 psi | 89% | 2897 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,682 psi | 90% | 2848 fps | 99.4% |
| Bofors RP15 | <<locked>> | 86% | 57,319 psi | 90% | 2867 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,203 psi | 90% | 2881 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 54,128 psi | 85% | 2822 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,607 psi | 86% | 2831 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,811 psi | 87% | 2818 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,795 psi | 86% | 2802 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,493 psi | 90% | 2949 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 59% | 1867 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,738 psi | 87% | 2795 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 56,173 psi | 88% | 2871 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,592 psi | 86% | 2749 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,130 psi | 88% | 2877 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,796 psi | 87% | 2756 fps | 100% |
| Norma 217 | <<locked>> | 94% | 53,998 psi | 85% | 2841 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,740 psi | 90% | 2890 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,304 psi | 88% | 2818 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,073 psi | 61% | 1909 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 53,983 psi | 85% | 2871 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,508 psi | 90% | 2910 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,653 psi | 90% | 2848 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2831 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,305 psi | 90% | 2841 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 54,418 psi | 85% | 2753 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,143 psi | 85% | 2782 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 57,566 psi | 90% | 2805 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 57,435 psi | 90% | 2897 fps | 100% |
| Vihtavuori N565 | <<locked>> | 86% | 55,042 psi | 86% | 2835 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 57,609 psi | 90% | 2910 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 90% | 55,158 psi | 86% | 2913 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 53,679 psi | 84% | 2815 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 53,983 psi | 85% | 2759 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% | 49,835 psi | 78% | 2671 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 43,323 psi | 68% | 2635 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 80% | 52,837 psi | 83% | 2825 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 49,893 psi | 78% | 2769 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 80% | 37,086 psi | 58% | 2516 fps | 97.8% |
| ADI AR 2218 | 86.8 gr | 86% | 39,798 psi | 62% | 2644 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 34,461 psi | 54% | 2490 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,517 psi | 79% | 2766 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,110 psi | 77% | 2684 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,250 psi | 68% | 2644 fps | 100% |
| Alliant Reloder-33 | 86.4 gr | 84% | 41,394 psi | 65% | 2638 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 88% | 41,568 psi | 65% | 2628 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,181 psi | 74% | 2677 fps | 97.7% |
| Bofors RP15 | <<locked>> | 80% | 46,862 psi | 73% | 2703 fps | 99.8% |
| Bofors RP30 | <<locked>> | 80% | 40,205 psi | 63% | 2589 fps | 98.6% |
| Bofors RP5 | <<locked>> | 80% | 50,517 psi | 79% | 2766 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 40,596 psi | 64% | 2595 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 80% | 52,098 psi | 82% | 2759 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,169 psi | 80% | 2746 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,641 psi | 67% | 2710 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,572 psi | 45% | 1677 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,214 psi | 82% | 2740 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 80% | 48,675 psi | 76% | 2753 fps | 99.7% |
| IMR 7977 Enduron | <<locked>> | 86% | 51,068 psi | 80% | 2694 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 80% | 31,850 psi | 50% | 2405 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 42,844 psi | 67% | 2556 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,358 psi | 51% | 2431 fps | 97.8% |
| Ramshot Grand | <<locked>> | 80% | 49,647 psi | 78% | 2769 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 44,599 psi | 70% | 2641 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,370 psi | 46% | 1716 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,438 psi | 67% | 2684 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,885 psi | 61% | 2579 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 80% | 54,012 psi | 85% | 2792 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,310 psi | 71% | 2651 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,664 psi | 84% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,514 psi | 74% | 2644 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 47,007 psi | 74% | 2661 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 80% | 53,954 psi | 85% | 2759 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 53,432 psi | 84% | 2835 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 80% | 44,643 psi | 70% | 2661 fps | 98.9% |
| Vihtavuori N568 | <<locked>> | 80% | 39,871 psi | 62% | 2595 fps | 96.7% |
| Vihtavuori N570 | 83.1 gr | 84% | 44,135 psi | 69% | 2713 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,617 psi | 78% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,386 psi | 79% | 2703 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 | 166gr | Peregrine VRG-2. Hodgdon Retumbo delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,867 fps to 2,949 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 59–90 %, leaving at least 10 % headroom. The 166.0 gr projectile in 0.284" calls for a 1:11.0 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 | 166gr | Peregrine VRG-2 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.