Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 156gr | Lapua Naturalis 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 IMR 8133 Enduron.
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% | 57,696 psi | 90% | 2851 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 2877 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 82% | 56,608 psi | 89% | 2953 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 84% | 56,869 psi | 89% | 2946 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 56,623 psi | 89% | 2933 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 57,609 psi | 90% | 3054 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 94% | 56,695 psi | 89% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,537 psi | 90% | 2920 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,595 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,927 psi | 88% | 2851 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,797 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,811 psi | 87% | 2966 fps | 98.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,695 psi | 89% | 2969 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,898 psi | 89% | 2900 fps | 98.9% |
| Bofors RP15 | <<locked>> | 86% | 57,043 psi | 89% | 2933 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,072 psi | 89% | 2949 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,595 psi | 90% | 2943 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,012 psi | 85% | 2890 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,405 psi | 87% | 2877 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,418 psi | 85% | 2864 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,434 psi | 88% | 3015 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,029 psi | 60% | 1919 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,506 psi | 87% | 2858 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 84% | 55,593 psi | 87% | 2933 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,740 psi | 90% | 2858 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,840 psi | 88% | 2943 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 56,289 psi | 88% | 2831 fps | 100% |
| Norma 217 | <<locked>> | 96% | 57,479 psi | 90% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,116 psi | 90% | 2956 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,883 psi | 88% | 2884 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,233 psi | 61% | 1965 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 53,359 psi | 84% | 2936 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,029 psi | 89% | 2972 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 57,522 psi | 90% | 2913 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2890 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,145 psi | 90% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 54,288 psi | 85% | 2815 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,172 psi | 85% | 2841 fps | 97% |
| Vihtavuori N560 | <<locked>> | 82% | 57,014 psi | 89% | 2959 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 55,187 psi | 86% | 2907 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 57,188 psi | 90% | 2972 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 90% | 54,708 psi | 86% | 2976 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 57,392 psi | 90% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,566 psi | 90% | 2874 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% | 50,662 psi | 79% | 2749 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 43,221 psi | 68% | 2690 fps | 95% |
| Accurate MAGPRO | <<locked>> | 80% | 52,794 psi | 83% | 2894 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 49,487 psi | 78% | 2828 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 37,463 psi | 59% | 2585 fps | 97.2% |
| ADI AR 2218 | 87.8 gr | 88% | 43,120 psi | 68% | 2776 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 34,954 psi | 55% | 2566 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,896 psi | 84% | 2864 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,430 psi | 79% | 2831 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,255 psi | 77% | 2756 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,410 psi | 68% | 2717 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 44,773 psi | 70% | 2769 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 90% | 45,585 psi | 71% | 2776 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,862 psi | 73% | 2733 fps | 96.9% |
| Bofors RP15 | <<locked>> | 80% | 47,065 psi | 74% | 2772 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,785 psi | 64% | 2667 fps | 98.2% |
| Bofors RP5 | <<locked>> | 80% | 50,430 psi | 79% | 2831 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,640 psi | 64% | 2657 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 51,822 psi | 81% | 2822 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,908 psi | 80% | 2805 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,496 psi | 67% | 2779 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,616 psi | 45% | 1722 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,083 psi | 82% | 2802 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 48,356 psi | 76% | 2815 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,302 psi | 85% | 2805 fps | 95.4% |
| IMR 8133 Enduron | 73.3 gr | 80% | 32,721 psi | 51% | 2490 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 43,859 psi | 69% | 2638 fps | 100% |
| Norma 217 | <<locked>> | 80% | 33,272 psi | 52% | 2520 fps | 97.7% |
| Ramshot Grand | <<locked>> | 80% | 49,313 psi | 77% | 2835 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 44,918 psi | 70% | 2710 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,457 psi | 46% | 1765 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,467 psi | 67% | 2756 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,479 psi | 62% | 2654 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 53,780 psi | 84% | 2861 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,426 psi | 71% | 2713 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,432 psi | 84% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,747 psi | 75% | 2713 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 47,456 psi | 74% | 2726 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 80% | 53,330 psi | 84% | 2904 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 45,121 psi | 71% | 2733 fps | 98.6% |
| Vihtavuori N568 | <<locked>> | 80% | 40,292 psi | 63% | 2667 fps | 96.1% |
| Vihtavuori N570 | 82.1 gr | 84% | 44,324 psi | 69% | 2782 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,487 psi | 78% | 2835 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,328 psi | 79% | 2769 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 44 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 156gr | Lapua Naturalis. ADI AR 2218 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,054 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 60–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:10.0 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, IMR 8133 Enduron rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 156gr | Lapua Naturalis 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.