Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 173gr | RWS H-Mantel 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-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>> | 82% | 55,869 psi | 88% | 2707 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 57,174 psi | 90% | 2818 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 82% | 55,535 psi | 87% | 2808 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 55,767 psi | 87% | 2799 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 56,811 psi | 89% | 2927 fps | 99.7% |
| ADI AR 2225 | <<locked>> | 92% | 56,101 psi | 88% | 2822 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,159 psi | 88% | 2802 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 54,665 psi | 86% | 2710 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 55,854 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 54,882 psi | 86% | 2838 fps | 99.2% |
| Alliant Reloder-50 | <<locked>> | 94% | 55,332 psi | 87% | 2835 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 55,680 psi | 87% | 2772 fps | 99.4% |
| Bofors RP15 | <<locked>> | 84% | 55,825 psi | 87% | 2795 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 55,767 psi | 87% | 2812 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,159 psi | 88% | 2802 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 56,913 psi | 89% | 2812 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 57,682 psi | 90% | 2795 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 56,652 psi | 89% | 2782 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 55,927 psi | 88% | 2877 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,145 psi | 60% | 1831 fps | 100% |
| Hodgdon US 869 | <<locked>> | 98% | 57,595 psi | 90% | 2818 fps | 96% |
| IMR 4955 Enduron | <<locked>> | 82% | 57,537 psi | 90% | 2772 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 54,331 psi | 85% | 2795 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,347 psi | 88% | 2733 fps | 97% |
| IMR 8133 Enduron | <<locked>> | 94% | 54,882 psi | 86% | 2808 fps | 100% |
| Lovex S071 | <<locked>> | 86% | 54,708 psi | 86% | 2690 fps | 100% |
| Norma 217 | <<locked>> | 94% | 56,637 psi | 89% | 2828 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 55,985 psi | 88% | 2818 fps | 100% |
| Ramshot Magnum | <<locked>> | 84% | 54,389 psi | 85% | 2743 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,218 psi | 61% | 1873 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 56,753 psi | 89% | 2858 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 55,767 psi | 87% | 2838 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 54,607 psi | 86% | 2766 fps | 98.6% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2740 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 84% | 56,565 psi | 89% | 2730 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,202 psi | 88% | 2766 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 86% | 57,464 psi | 90% | 2822 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 56,115 psi | 88% | 2841 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 88% | 53,766 psi | 84% | 2844 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 82% | 56,391 psi | 88% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,130 psi | 88% | 2740 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% | 52,199 psi | 82% | 2657 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 42,322 psi | 66% | 2575 fps | 96% |
| ADI AR 2213 | <<locked>> | 80% | 51,764 psi | 81% | 2749 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 80% | 39,015 psi | 61% | 2516 fps | 98.7% |
| ADI AR 2218 | 83.9 gr | 84% | 38,928 psi | 61% | 2585 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 36,390 psi | 57% | 2493 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 52,489 psi | 82% | 2746 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,242 psi | 80% | 2664 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 45,426 psi | 71% | 2635 fps | 100% |
| Alliant Reloder-33 | 83.4 gr | 82% | 40,524 psi | 64% | 2579 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 86% | 41,089 psi | 64% | 2579 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 48,762 psi | 76% | 2661 fps | 98.3% |
| Bofors RP15 | <<locked>> | 80% | 48,936 psi | 77% | 2690 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 42,424 psi | 66% | 2589 fps | 99.3% |
| Bofors RP5 | <<locked>> | 80% | 52,489 psi | 82% | 2746 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 42,670 psi | 67% | 2589 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 80% | 53,896 psi | 84% | 2740 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 52,953 psi | 83% | 2726 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 44,788 psi | 70% | 2703 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,718 psi | 45% | 1644 fps | 100% |
| Hodgdon US 869 | <<locked>> | 96% | 53,635 psi | 84% | 2756 fps | 95% |
| IMR 4955 Enduron | <<locked>> | 80% | 53,954 psi | 85% | 2717 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 80% | 50,792 psi | 80% | 2740 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 49,487 psi | 78% | 2625 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 80% | 33,939 psi | 53% | 2418 fps | 96.8% |
| Lovex S071 | <<locked>> | 80% | 45,179 psi | 71% | 2549 fps | 100% |
| Norma 217 | <<locked>> | 80% | 34,664 psi | 54% | 2444 fps | 98.9% |
| Ramshot Grand | <<locked>> | 80% | 51,866 psi | 81% | 2756 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 46,978 psi | 74% | 2635 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,573 psi | 46% | 1683 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 44,875 psi | 70% | 2680 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 41,249 psi | 65% | 2585 fps | 98% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 41,336 psi | 65% | 2533 fps | 95.1% |
| Vihtavuori 20N29 | <<locked>> | 98% | 48,298 psi | 76% | 2677 fps | 95.7% |
| Vihtavuori N165 | <<locked>> | 80% | 49,501 psi | 78% | 2631 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 42,844 psi | 67% | 2539 fps | 95% |
| Vihtavuori N565 | <<locked>> | 80% | 46,949 psi | 74% | 2657 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 80% | 42,032 psi | 66% | 2598 fps | 97.7% |
| Vihtavuori N570 | 78.3 gr | 80% | 40,176 psi | 63% | 2589 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 52,402 psi | 82% | 2746 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,228 psi | 82% | 2684 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 46 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 173gr | RWS H-Mantel. ADI AR 2218 delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,831 fps to 2,927 fps. Accurate 8700 gives the best case fill at 100 %, and 46 of the 46 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 173.0 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 | 173gr | RWS H-Mantel they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.