Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | NorthFork Bonded Core bullet and 49 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>> | 84% | 56,304 psi | 88% | 2802 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,779 psi | 83% | 2835 fps | 98% |
| Accurate MAGPRO | <<locked>> | 82% | 55,622 psi | 87% | 2907 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 57,159 psi | 90% | 2887 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,115 psi | 88% | 2904 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,898 psi | 88% | 2890 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,855 psi | 89% | 3012 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 94% | 55,825 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,724 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,695 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,940 psi | 86% | 2808 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,898 psi | 88% | 2881 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,810 psi | 86% | 2920 fps | 98.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,100 psi | 86% | 2917 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,376 psi | 88% | 2864 fps | 99% |
| Bofors RP15 | <<locked>> | 86% | 56,130 psi | 88% | 2890 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,840 psi | 88% | 2900 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,695 psi | 89% | 2897 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,319 psi | 90% | 2907 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,636 psi | 86% | 2838 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,464 psi | 90% | 2877 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,608 psi | 87% | 2969 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,927 psi | 59% | 1890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,824 psi | 86% | 2818 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 54,781 psi | 86% | 2890 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,130 psi | 90% | 2822 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,781 psi | 86% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,911 psi | 86% | 2782 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,318 psi | 88% | 2913 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,927 psi | 89% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,289 psi | 88% | 2913 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,926 psi | 86% | 2838 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,957 psi | 61% | 1936 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,652 psi | 89% | 2949 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,956 psi | 88% | 2923 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 57,246 psi | 90% | 2858 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,608 psi | 89% | 2871 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2841 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,246 psi | 88% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,855 psi | 89% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,072 psi | 89% | 2825 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,782 psi | 89% | 2858 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 82% | 56,652 psi | 89% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,144 psi | 88% | 2917 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 54,027 psi | 85% | 2858 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 56,217 psi | 88% | 2930 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 92% | 57,667 psi | 90% | 2992 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,260 psi | 88% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,724 psi | 89% | 2835 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% | 49,240 psi | 77% | 2700 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,353 psi | 71% | 2707 fps | 96.1% |
| Accurate MAGPRO | <<locked>> | 80% | 51,750 psi | 81% | 2844 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 53,330 psi | 84% | 2831 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,675 psi | 76% | 2785 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 36,419 psi | 57% | 2536 fps | 97.1% |
| ADI AR 2218 | 87.4 gr | 88% | 41,945 psi | 66% | 2723 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 33,765 psi | 53% | 2510 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,084 psi | 83% | 2822 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,429 psi | 77% | 2785 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,182 psi | 76% | 2710 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,337 psi | 66% | 2667 fps | 100% |
| Alliant Reloder-33 | 87 gr | 86% | 43,598 psi | 68% | 2720 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 90% | 44,048 psi | 69% | 2717 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,253 psi | 72% | 2694 fps | 97% |
| Bofors RP15 | <<locked>> | 80% | 46,035 psi | 72% | 2723 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 39,552 psi | 62% | 2612 fps | 98.1% |
| Bofors RP5 | <<locked>> | 80% | 49,429 psi | 77% | 2785 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 39,668 psi | 62% | 2608 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 80% | 50,995 psi | 80% | 2779 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,067 psi | 78% | 2762 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,437 psi | 65% | 2726 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,471 psi | 45% | 1696 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,343 psi | 80% | 2759 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 47,456 psi | 74% | 2769 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,606 psi | 84% | 2766 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 82% | 33,634 psi | 53% | 2487 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 42,525 psi | 67% | 2589 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,850 psi | 50% | 2454 fps | 97.3% |
| Norma MRP | <<locked>> | 80% | 53,113 psi | 83% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,370 psi | 76% | 2785 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 43,801 psi | 69% | 2664 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,298 psi | 46% | 1739 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,336 psi | 65% | 2703 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,985 psi | 60% | 2592 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 53,708 psi | 84% | 2805 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 53,040 psi | 83% | 2818 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,280 psi | 69% | 2664 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,707 psi | 83% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,200 psi | 83% | 2782 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,746 psi | 73% | 2671 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 46,311 psi | 73% | 2680 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 53,098 psi | 83% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,446 psi | 82% | 2858 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 43,859 psi | 69% | 2680 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 39,059 psi | 61% | 2615 fps | 95.9% |
| Vihtavuori N570 | 81.8 gr | 84% | 43,163 psi | 68% | 2730 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,443 psi | 76% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,356 psi | 77% | 2723 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 56 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | NorthFork Bonded Core. ADI AR 2218 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,012 fps. Accurate 8700 gives the best case fill at 100 %, and 56 of the 56 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 160.0 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, Alliant Reloder-33 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 160gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG, Hodgdon US 869, Lovex D100 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.