Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 139gr | 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 Vihtavuori N570, Hodgdon Retumbo and ReloadSwiss RS 76.
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>> | 88% | 57,203 psi | 90% | 2972 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,637 psi | 89% | 3077 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 84% | 54,853 psi | 86% | 3015 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 88% | 57,363 psi | 90% | 3084 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 56,449 psi | 88% | 3054 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 3169 fps | 98.5% |
| ADI AR 2225 | <<locked>> | 98% | 55,724 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,447 psi | 85% | 3002 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,711 psi | 90% | 3077 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,593 psi | 87% | 2982 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,391 psi | 88% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,594 psi | 89% | 3068 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 55,100 psi | 86% | 3074 fps | 97.7% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3051 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 54,404 psi | 85% | 2979 fps | 97.6% |
| Bofors RP15 | <<locked>> | 90% | 57,101 psi | 89% | 3064 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 56,144 psi | 88% | 3064 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 57,711 psi | 90% | 3077 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 53,896 psi | 84% | 3015 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 86% | 56,347 psi | 88% | 3015 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,100 psi | 86% | 2999 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,781 psi | 86% | 2927 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 55,506 psi | 87% | 3136 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 2005 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,840 psi | 89% | 2989 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,464 psi | 90% | 2992 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,478 psi | 89% | 2995 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 88% | 55,753 psi | 87% | 3064 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,447 psi | 85% | 3045 fps | 99.7% |
| Lovex S071 | <<locked>> | 92% | 55,317 psi | 87% | 2949 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 3068 fps | 100% |
| Norma MRP | <<locked>> | 84% | 53,896 psi | 84% | 3031 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,174 psi | 90% | 3087 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 90% | 55,854 psi | 88% | 3012 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,522 psi | 60% | 2054 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,956 psi | 89% | 3120 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 56,304 psi | 88% | 3084 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 84% | 55,303 psi | 87% | 2982 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 84% | 54,056 psi | 85% | 2992 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,609 psi | 90% | 3048 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,898 psi | 89% | 2969 fps | 99.4% |
| Somchem S365 | <<locked>> | 82% | 57,000 psi | 89% | 2982 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,331 psi | 85% | 2959 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,549 psi | 85% | 2943 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,276 psi | 90% | 3012 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,464 psi | 90% | 3097 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 90% | 54,534 psi | 85% | 3018 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 94% | 56,492 psi | 89% | 3087 fps | 99% |
| Vihtavuori N570 | <<locked>> | 94% | 53,708 psi | 84% | 3081 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,144 psi | 88% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,418 psi | 85% | 2956 fps | 99.9% |
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% | 43,279 psi | 68% | 2749 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 80% | 45,426 psi | 71% | 2881 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 80% | 47,718 psi | 75% | 2894 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 42,931 psi | 67% | 2828 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 36,492 psi | 57% | 2671 fps | 95.5% |
| ADI AR 2218 | <<locked>> | 94% | 45,745 psi | 72% | 2940 fps | 95% |
| ADI AR 2225 | <<locked>> | 82% | 31,082 psi | 49% | 2566 fps | 96.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,572 psi | 75% | 2884 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,584 psi | 68% | 2831 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,119 psi | 66% | 2772 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,550 psi | 57% | 2700 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,428 psi | 76% | 2940 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 46,920 psi | 74% | 2923 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,618 psi | 79% | 2979 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,587 psi | 75% | 2861 fps | 96% |
| Bofors RP15 | <<locked>> | 80% | 40,495 psi | 63% | 2766 fps | 97.6% |
| Bofors RP30 | <<locked>> | 82% | 36,463 psi | 57% | 2684 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 43,584 psi | 68% | 2831 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 34,548 psi | 54% | 2625 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 45,527 psi | 71% | 2828 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,672 psi | 70% | 2812 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,213 psi | 80% | 2877 fps | 100% |
| Hodgdon Retumbo | 75.1 gr | 80% | 35,650 psi | 56% | 2733 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,166 psi | 44% | 1808 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,345 psi | 84% | 2936 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,838 psi | 84% | 2940 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,456 psi | 73% | 2822 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 41,582 psi | 65% | 2805 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 90% | 38,072 psi | 60% | 2730 fps | 96.1% |
| Lovex S071 | <<locked>> | 80% | 36,941 psi | 58% | 2621 fps | 98.8% |
| Norma 217 | <<locked>> | 84% | 30,705 psi | 48% | 2559 fps | 95% |
| Norma MRP | <<locked>> | 80% | 46,470 psi | 73% | 2904 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 41,800 psi | 66% | 2815 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 80% | 37,579 psi | 59% | 2684 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 45% | 1847 fps | 100% |
| ReloadSwiss RS 76 | 80.3 gr | 80% | 35,056 psi | 55% | 2700 fps | 98% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 40,901 psi | 64% | 2799 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 48,312 psi | 76% | 2864 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 47,079 psi | 74% | 2871 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,731 psi | 73% | 2867 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 49,487 psi | 78% | 2848 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 53,272 psi | 83% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,485 psi | 74% | 2844 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 41,466 psi | 65% | 2720 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 46,688 psi | 73% | 2851 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,122 psi | 72% | 2897 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 38,043 psi | 60% | 2697 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 86% | 41,872 psi | 66% | 2815 fps | 95.4% |
| Vihtavuori N570 | 89.6 gr | 92% | 49,879 psi | 78% | 3009 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,756 psi | 64% | 2822 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,874 psi | 69% | 2772 fps | 98.6% |
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 59 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 139gr | Barnes LRX BT. ADI AR 2218 delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,169 fps. Accurate 8700 gives the best case fill at 100 %, and 59 of the 59 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 139.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, Alliant Reloder-50 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 139gr | Barnes LRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, IMR 7977 Enduron, 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.