Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 174gr | Prvi Partizan FMJ BT bullet and 41 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-50.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 56,985 psi | 89% | 2713 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 54,317 psi | 85% | 2772 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 82% | 56,652 psi | 89% | 2818 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 56,869 psi | 89% | 2808 fps | 100% |
| ADI AR 2218 | <<locked>> | 92% | 54,027 psi | 85% | 2874 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 92% | 57,232 psi | 90% | 2828 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 57,276 psi | 90% | 2808 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 55,811 psi | 87% | 2717 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 57,014 psi | 89% | 2795 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 56,130 psi | 88% | 2851 fps | 99.4% |
| Alliant Reloder-50 | <<locked>> | 94% | 56,956 psi | 89% | 2851 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 56,550 psi | 89% | 2779 fps | 99.5% |
| Bofors RP15 | <<locked>> | 84% | 56,913 psi | 89% | 2805 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 57,101 psi | 89% | 2822 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 57,276 psi | 90% | 2808 fps | 100% |
| Hodgdon H1000 | <<locked>> | 86% | 54,259 psi | 85% | 2769 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 57,725 psi | 90% | 2789 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 57,217 psi | 90% | 2887 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,145 psi | 60% | 1831 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 55,477 psi | 87% | 2802 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 57,406 psi | 90% | 2746 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 94% | 56,173 psi | 88% | 2818 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 55,477 psi | 87% | 2736 fps | 96.1% |
| Lovex S071 | <<locked>> | 86% | 55,593 psi | 87% | 2697 fps | 100% |
| Norma 217 | <<locked>> | 92% | 54,128 psi | 85% | 2785 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 57,188 psi | 90% | 2828 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 57,551 psi | 90% | 2867 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 84% | 55,680 psi | 87% | 2756 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,363 psi | 62% | 1873 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 53,780 psi | 84% | 2808 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 57,261 psi | 90% | 2851 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 55,477 psi | 87% | 2736 fps | 96.1% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 55,883 psi | 88% | 2779 fps | 98.8% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 53,243 psi | 83% | 2753 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 84% | 57,609 psi | 90% | 2740 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 57,319 psi | 90% | 2779 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 84% | 54,810 psi | 86% | 2776 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 57,363 psi | 90% | 2851 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 88% | 55,042 psi | 86% | 2858 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 82% | 57,725 psi | 90% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,956 psi | 89% | 2743 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% | 53,287 psi | 84% | 2667 fps | 100% |
| Accurate 8700 | <<locked>> | 90% | 40,393 psi | 63% | 2530 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 80% | 52,852 psi | 83% | 2762 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 39,827 psi | 62% | 2526 fps | 98.9% |
| ADI AR 2218 | 85.1 gr | 84% | 39,929 psi | 63% | 2602 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 37,347 psi | 59% | 2507 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 53,606 psi | 84% | 2756 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 52,185 psi | 82% | 2671 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 46,340 psi | 73% | 2638 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 80% | 38,508 psi | 60% | 2526 fps | 95.1% |
| Alliant Reloder-50 | 88.4 gr | 86% | 42,192 psi | 66% | 2595 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 49,603 psi | 78% | 2667 fps | 98.6% |
| Bofors RP15 | <<locked>> | 80% | 49,806 psi | 78% | 2697 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 43,468 psi | 68% | 2602 fps | 99.5% |
| Bofors RP5 | <<locked>> | 80% | 53,606 psi | 84% | 2756 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 43,569 psi | 68% | 2598 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,969 psi | 85% | 2736 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 46,006 psi | 72% | 2713 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,689 psi | 45% | 1640 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 51,735 psi | 81% | 2746 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 84% | 50,343 psi | 79% | 2631 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 80% | 34,751 psi | 54% | 2431 fps | 97.2% |
| Lovex D100 | <<locked>> | 88% | 51,561 psi | 81% | 2674 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 45,890 psi | 72% | 2556 fps | 100% |
| Norma 217 | <<locked>> | 80% | 35,534 psi | 56% | 2457 fps | 99.2% |
| Ramshot Grand | <<locked>> | 80% | 53,040 psi | 83% | 2766 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 53,563 psi | 84% | 2805 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 80% | 48,008 psi | 75% | 2644 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,544 psi | 46% | 1680 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 46,021 psi | 72% | 2690 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 42,250 psi | 66% | 2595 fps | 98.3% |
| Shooters World 50 BMG | <<locked>> | 88% | 51,561 psi | 81% | 2674 fps | 95.1% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 42,351 psi | 66% | 2549 fps | 95.7% |
| Vihtavuori 20N29 | <<locked>> | 96% | 46,021 psi | 72% | 2628 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 80% | 50,502 psi | 79% | 2638 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 43,714 psi | 69% | 2549 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 80% | 47,819 psi | 75% | 2664 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 80% | 43,018 psi | 67% | 2608 fps | 98.1% |
| Vihtavuori N570 | 79.4 gr | 80% | 41,176 psi | 65% | 2602 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 53,534 psi | 84% | 2753 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 53,272 psi | 83% | 2694 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 41 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 174gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,831 fps to 2,887 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 41 of the 41 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 174.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori 20N29 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-50 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 174gr | Prvi Partizan FMJ 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.