Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 150gr | Prvi Partizan HP BT bullet and 49 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 Vihtavuori N570.
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% | 55,274 psi | 87% | 2861 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,576 psi | 81% | 2874 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 82% | 54,389 psi | 85% | 2956 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 82% | 56,043 psi | 88% | 2943 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,969 psi | 86% | 2959 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 92% | 54,621 psi | 86% | 2940 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 96% | 55,492 psi | 87% | 3054 fps | 98.8% |
| ADI AR 2225 | <<locked>> | 94% | 54,346 psi | 85% | 2959 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,217 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,666 psi | 87% | 2933 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,593 psi | 87% | 2953 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,479 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,592 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,682 psi | 90% | 3031 fps | 98.8% |
| Alliant Reloder-50 | <<locked>> | 96% | 53,853 psi | 84% | 2956 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,405 psi | 87% | 2917 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 55,027 psi | 86% | 2943 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,636 psi | 86% | 2953 fps | 99.9% |
| Bofors RP5 | <<locked>> | 84% | 55,593 psi | 87% | 2953 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,767 psi | 87% | 2953 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,435 psi | 90% | 2949 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,405 psi | 88% | 2933 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,273 psi | 85% | 3022 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 59% | 1952 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,421 psi | 90% | 2927 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 86% | 57,522 psi | 90% | 3002 fps | 100% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,246 psi | 90% | 2999 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 57,464 psi | 90% | 2887 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,810 psi | 86% | 2963 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,724 psi | 87% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,926 psi | 86% | 2959 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 86% | 53,476 psi | 84% | 2887 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,899 psi | 61% | 1995 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,230 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,549 psi | 85% | 2969 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 82% | 56,246 psi | 88% | 2913 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 55,492 psi | 87% | 2927 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 53,374 psi | 84% | 2887 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,129 psi | 86% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 55,709 psi | 87% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,014 psi | 88% | 2881 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,608 psi | 87% | 2900 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 55,506 psi | 87% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,998 psi | 86% | 2969 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 88% | 56,623 psi | 89% | 2966 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 54,781 psi | 86% | 2972 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 92% | 56,304 psi | 88% | 3035 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,795 psi | 86% | 2946 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,622 psi | 87% | 2887 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% | 48,254 psi | 76% | 2753 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 44,251 psi | 69% | 2743 fps | 95% |
| Accurate MAGPRO | <<locked>> | 80% | 50,633 psi | 79% | 2894 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 80% | 52,330 psi | 82% | 2887 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 47,601 psi | 75% | 2831 fps | 99% |
| ADI AR 2217 | <<locked>> | 80% | 35,592 psi | 56% | 2575 fps | 96.2% |
| ADI AR 2218 | 91.3 gr | 90% | 44,193 psi | 69% | 2831 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 80% | 32,895 psi | 52% | 2543 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,591 psi | 82% | 2884 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,083 psi | 82% | 2877 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,370 psi | 76% | 2835 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,021 psi | 74% | 2762 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,307 psi | 65% | 2713 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 45,861 psi | 72% | 2825 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 92% | 46,311 psi | 73% | 2818 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,266 psi | 71% | 2736 fps | 96.2% |
| Bofors RP15 | <<locked>> | 80% | 45,063 psi | 71% | 2772 fps | 99.2% |
| Bofors RP30 | <<locked>> | 80% | 38,580 psi | 60% | 2651 fps | 97.2% |
| Bofors RP5 | <<locked>> | 80% | 48,370 psi | 76% | 2835 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 80% | 38,696 psi | 61% | 2651 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 80% | 49,980 psi | 78% | 2828 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,095 psi | 77% | 2815 fps | 98.8% |
| Hodgdon Retumbo | 76.6 gr | 80% | 40,350 psi | 63% | 2766 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,500 psi | 45% | 1755 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,473 psi | 79% | 2815 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 80% | 46,383 psi | 73% | 2818 fps | 98.8% |
| IMR 8133 Enduron | <<locked>> | 84% | 35,215 psi | 55% | 2582 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 41,437 psi | 65% | 2631 fps | 99.9% |
| Norma 217 | <<locked>> | 80% | 30,806 psi | 48% | 2484 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 51,837 psi | 81% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,065 psi | 74% | 2831 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 80% | 42,598 psi | 67% | 2703 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,283 psi | 46% | 1795 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,190 psi | 63% | 2743 fps | 99.8% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 36,927 psi | 58% | 2625 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 52,620 psi | 82% | 2854 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 51,822 psi | 81% | 2867 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 46,340 psi | 73% | 2762 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,474 psi | 81% | 2864 fps | 99.9% |
| Somchem S385 | <<locked>> | 80% | 52,156 psi | 82% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,818 psi | 72% | 2720 fps | 99.7% |
| Vihtavuori N170 | <<locked>> | 86% | 48,588 psi | 76% | 2782 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 80% | 51,909 psi | 81% | 2841 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,213 psi | 80% | 2907 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 80% | 42,946 psi | 67% | 2726 fps | 97.8% |
| Vihtavuori N568 | <<locked>> | 82% | 40,901 psi | 64% | 2713 fps | 96% |
| Vihtavuori N570 | 85.5 gr | 86% | 45,252 psi | 71% | 2835 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,963 psi | 74% | 2835 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,356 psi | 76% | 2772 fps | 99.7% |
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 | 150gr | Prvi Partizan HP BT. ADI AR 2218 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,054 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 59–90 %, leaving at least 10 % headroom. The 150.0 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 150gr | Prvi Partizan HP 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.