Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 165gr | Osprey Virtus bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 and ReloadSwiss RS 76.
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% | 54,752 psi | 86% | 2753 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2782 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 82% | 53,954 psi | 85% | 2854 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 55,767 psi | 87% | 2838 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,766 psi | 86% | 2854 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 54,230 psi | 85% | 2838 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 55,056 psi | 86% | 2956 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 94% | 53,925 psi | 85% | 2858 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 55,927 psi | 88% | 2835 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,376 psi | 87% | 2825 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,245 psi | 87% | 2848 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,276 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,476 psi | 85% | 2831 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,043 psi | 89% | 2930 fps | 99.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 57,145 psi | 90% | 2920 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,129 psi | 86% | 2818 fps | 98.9% |
| Bofors RP15 | <<locked>> | 86% | 54,694 psi | 86% | 2838 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,157 psi | 85% | 2848 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 55,245 psi | 87% | 2848 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,608 psi | 87% | 2854 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,232 psi | 90% | 2844 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,159 psi | 88% | 2828 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 53,925 psi | 85% | 2913 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,840 psi | 59% | 1860 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,145 psi | 90% | 2822 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 86% | 57,232 psi | 90% | 2897 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 55,912 psi | 88% | 2776 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 98% | 56,782 psi | 89% | 2897 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 56,840 psi | 89% | 2779 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,404 psi | 85% | 2861 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,390 psi | 87% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,607 psi | 86% | 2858 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 57,246 psi | 90% | 2844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,856 psi | 61% | 1903 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 54,824 psi | 86% | 2900 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 53,969 psi | 85% | 2867 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 56,115 psi | 88% | 2808 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 55,317 psi | 87% | 2822 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 2789 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 54,955 psi | 86% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,493 psi | 90% | 2795 fps | 99.9% |
| Somchem S385 | <<locked>> | 82% | 55,332 psi | 87% | 2785 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,753 psi | 87% | 2776 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,172 psi | 86% | 2805 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 82% | 55,042 psi | 86% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,752 psi | 86% | 2867 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 88% | 56,144 psi | 88% | 2861 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 54,288 psi | 85% | 2874 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 92% | 55,941 psi | 88% | 2940 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,447 psi | 85% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,361 psi | 87% | 2785 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% | 47,601 psi | 75% | 2648 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 43,700 psi | 68% | 2651 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 80% | 50,241 psi | 79% | 2792 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 52,098 psi | 82% | 2782 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 47,398 psi | 74% | 2736 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 35,143 psi | 55% | 2484 fps | 96.9% |
| ADI AR 2218 | 85.4 gr | 88% | 40,466 psi | 63% | 2667 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 32,430 psi | 51% | 2454 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,344 psi | 82% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,837 psi | 81% | 2772 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,066 psi | 75% | 2736 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,688 psi | 73% | 2661 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,915 psi | 64% | 2615 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 41,872 psi | 66% | 2664 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 90% | 41,930 psi | 66% | 2651 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,179 psi | 71% | 2648 fps | 96.9% |
| Bofors RP15 | <<locked>> | 80% | 44,643 psi | 70% | 2674 fps | 99.5% |
| Bofors RP30 | <<locked>> | 80% | 38,043 psi | 60% | 2556 fps | 97.8% |
| Bofors RP5 | <<locked>> | 80% | 48,066 psi | 75% | 2736 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 38,377 psi | 60% | 2559 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 80% | 49,821 psi | 78% | 2730 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,878 psi | 77% | 2713 fps | 99.2% |
| Hodgdon Retumbo | 73.3 gr | 80% | 40,030 psi | 63% | 2671 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 45% | 1670 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,212 psi | 79% | 2713 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 46,137 psi | 72% | 2720 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 52,344 psi | 82% | 2720 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 82% | 32,140 psi | 50% | 2428 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 40,770 psi | 64% | 2530 fps | 100% |
| Norma 217 | <<locked>> | 80% | 30,240 psi | 47% | 2392 fps | 96.8% |
| Norma MRP | <<locked>> | 80% | 51,532 psi | 81% | 2802 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,804 psi | 73% | 2733 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 80% | 42,250 psi | 66% | 2612 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 46% | 1706 fps | 100% |
| ReloadSwiss RS 76 | 78.5 gr | 80% | 39,769 psi | 62% | 2648 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 36,419 psi | 57% | 2536 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 52,518 psi | 82% | 2756 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 51,677 psi | 81% | 2766 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 45,716 psi | 72% | 2671 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,329 psi | 80% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 53,780 psi | 84% | 2743 fps | 99.7% |
| Somchem S385 | <<locked>> | 80% | 51,822 psi | 81% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,455 psi | 71% | 2621 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 44,773 psi | 70% | 2628 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 51,459 psi | 81% | 2736 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 50,981 psi | 80% | 2805 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 42,351 psi | 66% | 2628 fps | 98.3% |
| Vihtavuori N568 | <<locked>> | 80% | 37,507 psi | 59% | 2556 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 86% | 44,759 psi | 70% | 2740 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,572 psi | 73% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,138 psi | 75% | 2674 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 51 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 165gr | Osprey Virtus. ADI AR 2218 delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,860 fps to 2,956 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 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 165.0 gr projectile in 0.284" calls for a 1:8.5 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. Hodgdon Retumbo, ADI AR 2218, ReloadSwiss RS 76 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 165gr | Osprey Virtus 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.