Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 152gr | Barnes LRX BT bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 and Vihtavuori N570.
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>> | 86% | 55,999 psi | 88% | 2861 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 48,051 psi | 75% | 2808 fps | 96.2% |
| Accurate MAGPRO | <<locked>> | 84% | 55,535 psi | 87% | 2966 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 84% | 57,464 psi | 90% | 2956 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,217 psi | 88% | 2966 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 55,593 psi | 87% | 2943 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 56,463 psi | 88% | 3061 fps | 98.9% |
| ADI AR 2225 | <<locked>> | 96% | 54,897 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,956 psi | 89% | 2943 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,608 psi | 89% | 2959 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,723 psi | 86% | 2867 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 55,579 psi | 87% | 2940 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 55,361 psi | 87% | 2946 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 54,172 psi | 85% | 2966 fps | 98.2% |
| Alliant Reloder-50 | <<locked>> | 98% | 54,056 psi | 85% | 2953 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,782 psi | 89% | 2927 fps | 98.7% |
| Bofors RP15 | <<locked>> | 88% | 56,014 psi | 88% | 2949 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 55,390 psi | 87% | 2956 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 56,608 psi | 89% | 2959 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 57,029 psi | 89% | 2966 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 54,824 psi | 86% | 2897 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 53,824 psi | 84% | 2881 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,421 psi | 90% | 2858 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,984 psi | 86% | 3028 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,739 psi | 59% | 1929 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,216 psi | 87% | 2881 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 86% | 54,694 psi | 86% | 2949 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,624 psi | 90% | 2999 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 54,346 psi | 85% | 2838 fps | 100% |
| Norma 217 | <<locked>> | 98% | 55,100 psi | 86% | 2963 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,681 psi | 89% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,028 psi | 88% | 2969 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 54,621 psi | 86% | 2897 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,696 psi | 61% | 1975 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 55,941 psi | 88% | 3005 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 55,288 psi | 87% | 2976 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 84% | 57,682 psi | 90% | 2923 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 84% | 56,666 psi | 89% | 2933 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 2822 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,289 psi | 88% | 2927 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,448 psi | 87% | 2854 fps | 99.6% |
| Somchem S385 | <<locked>> | 84% | 56,855 psi | 89% | 2897 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,203 psi | 90% | 2887 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,550 psi | 89% | 2907 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 84% | 56,304 psi | 88% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 56,028 psi | 88% | 2976 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 90% | 57,450 psi | 90% | 2969 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 92% | 55,521 psi | 87% | 2976 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 94% | 57,145 psi | 90% | 3045 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,376 psi | 87% | 2949 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,913 psi | 89% | 2897 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% | 45,498 psi | 71% | 2700 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 44,512 psi | 70% | 2743 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 80% | 47,805 psi | 75% | 2835 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 80% | 49,995 psi | 78% | 2838 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 45,223 psi | 71% | 2782 fps | 98.5% |
| ADI AR 2217 | <<locked>> | 80% | 33,431 psi | 52% | 2513 fps | 95.1% |
| ADI AR 2218 | 90.4 gr | 92% | 44,759 psi | 70% | 2838 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 30,719 psi | 48% | 2477 fps | 97.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,792 psi | 78% | 2828 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,905 psi | 72% | 2782 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,541 psi | 70% | 2713 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,754 psi | 61% | 2657 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,227 psi | 80% | 2884 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 46,354 psi | 73% | 2831 fps | 96.2% |
| Alliant Reloder-50 | <<locked>> | 94% | 46,209 psi | 72% | 2812 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,323 psi | 68% | 2690 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 42,612 psi | 67% | 2720 fps | 98.8% |
| Bofors RP30 | <<locked>> | 80% | 36,071 psi | 57% | 2589 fps | 96.3% |
| Bofors RP5 | <<locked>> | 80% | 45,905 psi | 72% | 2782 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 80% | 36,477 psi | 57% | 2592 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 80% | 47,747 psi | 75% | 2779 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,847 psi | 73% | 2762 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,708 psi | 84% | 2808 fps | 100% |
| Hodgdon Retumbo | 74.2 gr | 80% | 37,855 psi | 59% | 2703 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 44% | 1736 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,399 psi | 76% | 2769 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 80% | 43,932 psi | 69% | 2762 fps | 98.3% |
| IMR 8133 Enduron | <<locked>> | 86% | 35,056 psi | 55% | 2575 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 38,986 psi | 61% | 2575 fps | 99.6% |
| Norma 217 | <<locked>> | 82% | 30,574 psi | 48% | 2474 fps | 96% |
| Norma MRP | <<locked>> | 80% | 49,052 psi | 77% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,469 psi | 70% | 2776 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 80% | 39,972 psi | 63% | 2648 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,935 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,391 psi | 59% | 2674 fps | 99.3% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 37,043 psi | 58% | 2625 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 50,386 psi | 79% | 2808 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 80% | 49,327 psi | 77% | 2818 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,659 psi | 73% | 2762 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,979 psi | 77% | 2815 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 51,677 psi | 81% | 2795 fps | 99.2% |
| Somchem S385 | <<locked>> | 80% | 49,705 psi | 78% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 43,497 psi | 68% | 2667 fps | 99.4% |
| Vihtavuori N170 | <<locked>> | 88% | 49,255 psi | 77% | 2785 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 49,052 psi | 77% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,602 psi | 76% | 2851 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 80% | 40,248 psi | 63% | 2664 fps | 97% |
| Vihtavuori N568 | <<locked>> | 84% | 41,278 psi | 65% | 2717 fps | 96.1% |
| Vihtavuori N570 | 84.7 gr | 88% | 45,585 psi | 71% | 2838 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,729 psi | 69% | 2776 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,079 psi | 72% | 2723 fps | 99.4% |
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 58 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 152gr | Barnes LRX BT. ADI AR 2218 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,061 fps. Accurate 8700 gives the best case fill at 100 %, and 58 of the 58 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 152.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 152gr | Barnes LRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, Lovex D100, Ramshot LRT 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.