Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | Winchester Silvertip bullet and 39 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.
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% | 56,043 psi | 88% | 2795 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2900 fps | 99% |
| ADI AR 2213 | <<locked>> | 82% | 55,811 psi | 87% | 2897 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 55,927 psi | 88% | 2884 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 57,319 psi | 90% | 3012 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 92% | 56,420 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,420 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 54,781 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 56,130 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 55,172 psi | 86% | 2917 fps | 98.9% |
| Alliant Reloder-50 | <<locked>> | 94% | 55,912 psi | 88% | 2917 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 55,854 psi | 88% | 2854 fps | 99.1% |
| Bofors RP15 | <<locked>> | 84% | 56,057 psi | 88% | 2884 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 56,043 psi | 88% | 2897 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,420 psi | 88% | 2890 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 57,305 psi | 90% | 2900 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 56,927 psi | 89% | 2867 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 86% | 56,101 psi | 88% | 2966 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,159 psi | 60% | 1909 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 57,740 psi | 90% | 2861 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 54,447 psi | 85% | 2881 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,608 psi | 89% | 2818 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 55,230 psi | 87% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 86% | 54,723 psi | 86% | 2776 fps | 100% |
| Norma 217 | <<locked>> | 94% | 56,942 psi | 89% | 2913 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 56,072 psi | 88% | 2904 fps | 100% |
| Ramshot Magnum | <<locked>> | 84% | 54,810 psi | 86% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,160 psi | 61% | 1952 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 57,072 psi | 89% | 2943 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 56,217 psi | 88% | 2920 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 55,042 psi | 86% | 2844 fps | 98.3% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 2815 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 84% | 56,753 psi | 89% | 2818 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,536 psi | 89% | 2851 fps | 98% |
| Vihtavuori N565 | <<locked>> | 84% | 53,940 psi | 85% | 2848 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 88% | 56,420 psi | 88% | 2923 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 88% | 54,085 psi | 85% | 2927 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 56,579 psi | 89% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,115 psi | 88% | 2822 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% | 52,344 psi | 82% | 2743 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 42,656 psi | 67% | 2644 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 80% | 51,982 psi | 81% | 2838 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 80% | 39,146 psi | 61% | 2592 fps | 98.2% |
| ADI AR 2218 | 90.5 gr | 86% | 42,221 psi | 66% | 2726 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 36,448 psi | 57% | 2562 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 52,721 psi | 83% | 2835 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,314 psi | 80% | 2749 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 45,571 psi | 71% | 2713 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 40,828 psi | 64% | 2651 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 88% | 44,657 psi | 70% | 2717 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 48,892 psi | 77% | 2740 fps | 97.9% |
| Bofors RP15 | <<locked>> | 80% | 49,095 psi | 77% | 2772 fps | 99.9% |
| Bofors RP30 | <<locked>> | 80% | 42,540 psi | 67% | 2664 fps | 98.9% |
| Bofors RP5 | <<locked>> | 80% | 52,721 psi | 83% | 2835 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 42,743 psi | 67% | 2664 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,171 psi | 83% | 2812 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 80% | 44,889 psi | 70% | 2782 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,631 psi | 45% | 1716 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 54,070 psi | 85% | 2805 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 80% | 50,894 psi | 80% | 2822 fps | 99.8% |
| IMR 7977 Enduron | <<locked>> | 86% | 52,953 psi | 83% | 2759 fps | 95.8% |
| IMR 8133 Enduron | 77.3 gr | 80% | 33,997 psi | 53% | 2484 fps | 96.1% |
| Lovex S071 | <<locked>> | 80% | 45,107 psi | 71% | 2628 fps | 100% |
| Norma 217 | <<locked>> | 80% | 34,679 psi | 54% | 2510 fps | 98.4% |
| Ramshot Grand | <<locked>> | 80% | 52,127 psi | 82% | 2841 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 47,108 psi | 74% | 2713 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 46% | 1755 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 45,063 psi | 71% | 2756 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 41,379 psi | 65% | 2654 fps | 97.5% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 44,585 psi | 70% | 2664 fps | 95.6% |
| Vihtavuori 20N29 | <<locked>> | 98% | 48,718 psi | 76% | 2749 fps | 95.2% |
| Vihtavuori N165 | <<locked>> | 80% | 49,603 psi | 78% | 2713 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 46,021 psi | 72% | 2671 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 80% | 47,079 psi | 74% | 2736 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 80% | 42,177 psi | 66% | 2671 fps | 97.2% |
| Vihtavuori N570 | 84.5 gr | 82% | 43,381 psi | 68% | 2726 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 52,533 psi | 82% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,388 psi | 82% | 2769 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 45 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | Winchester Silvertip. ADI AR 2218 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,012 fps. Accurate 8700 gives the best case fill at 100 %, and 45 of the 45 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 160.0 gr projectile in 0.284" calls for a 1:16.0 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 | 160gr | Winchester Silvertip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG, Hodgdon US 869, Vihtavuori 24N41 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.