Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 139gr | Hasler ARIETE bullet and 52 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, 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>> | 88% | 56,753 psi | 89% | 2969 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,173 psi | 88% | 3074 fps | 99% |
| ADI AR 2209 | <<locked>> | 84% | 54,375 psi | 85% | 3009 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 88% | 56,913 psi | 89% | 3077 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 55,999 psi | 88% | 3048 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,087 psi | 89% | 3159 fps | 98.3% |
| ADI AR 2225 | <<locked>> | 98% | 55,056 psi | 86% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 53,983 psi | 85% | 2995 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,217 psi | 90% | 3071 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,085 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,912 psi | 88% | 3048 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,869 psi | 88% | 3058 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 54,491 psi | 85% | 3064 fps | 97.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 3045 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,696 psi | 90% | 3031 fps | 98.2% |
| Bofors RP15 | <<locked>> | 90% | 56,623 psi | 89% | 3058 fps | 99.9% |
| Bofors RP30 | <<locked>> | 94% | 55,680 psi | 87% | 3054 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 57,217 psi | 90% | 3071 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,464 psi | 90% | 3068 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 55,709 psi | 87% | 3005 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,679 psi | 86% | 2989 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,491 psi | 85% | 2923 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,998 psi | 86% | 3130 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,492 psi | 59% | 2005 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,391 psi | 88% | 2982 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,159 psi | 90% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,072 psi | 88% | 2989 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 88% | 55,274 psi | 87% | 3058 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,824 psi | 84% | 3035 fps | 99.6% |
| Lovex S071 | <<locked>> | 92% | 54,853 psi | 86% | 2943 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,013 psi | 86% | 3061 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,392 psi | 90% | 3084 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,449 psi | 88% | 3074 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 90% | 55,216 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 60% | 2051 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,260 psi | 88% | 3114 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,463 psi | 87% | 3071 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 84% | 54,839 psi | 86% | 2976 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 86% | 57,522 psi | 90% | 3045 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,130 psi | 90% | 3041 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,507 psi | 89% | 2963 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 56,434 psi | 88% | 2976 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,711 psi | 90% | 3009 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,114 psi | 85% | 2940 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,508 psi | 90% | 3009 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 86% | 56,753 psi | 89% | 3009 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,811 psi | 89% | 3084 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 90% | 53,940 psi | 85% | 3012 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 94% | 55,854 psi | 88% | 3077 fps | 98.9% |
| Vihtavuori N570 | <<locked>> | 96% | 57,363 psi | 90% | 3140 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,506 psi | 87% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 53,998 psi | 85% | 2949 fps | 99.8% |
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% | 42,815 psi | 67% | 2743 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 80% | 44,976 psi | 70% | 2871 fps | 96.7% |
| ADI AR 2209 | <<locked>> | 80% | 47,268 psi | 74% | 2887 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 42,482 psi | 67% | 2818 fps | 97.1% |
| ADI AR 2217 | <<locked>> | 84% | 36,260 psi | 57% | 2667 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 96% | 48,762 psi | 76% | 3002 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 82% | 30,864 psi | 48% | 2559 fps | 96.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,137 psi | 74% | 2877 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,149 psi | 68% | 2822 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,829 psi | 66% | 2766 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,129 psi | 57% | 2690 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,935 psi | 75% | 2933 fps | 100% |
| Alliant Reloder-33 | 92.4 gr | 92% | 46,354 psi | 73% | 2917 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,053 psi | 78% | 2972 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,094 psi | 74% | 2851 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 40,045 psi | 63% | 2756 fps | 97.4% |
| Bofors RP30 | <<locked>> | 82% | 36,187 psi | 57% | 2677 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 43,149 psi | 68% | 2822 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 80% | 34,185 psi | 54% | 2615 fps | 95% |
| Hodgdon H4831 | <<locked>> | 80% | 45,121 psi | 71% | 2822 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,266 psi | 69% | 2805 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,908 psi | 80% | 2871 fps | 100% |
| Hodgdon Retumbo | 74.5 gr | 80% | 35,244 psi | 55% | 2723 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 44% | 1804 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,881 psi | 83% | 2930 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,330 psi | 84% | 2933 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,050 psi | 72% | 2815 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 80% | 41,133 psi | 64% | 2795 fps | 96.8% |
| IMR 8133 Enduron | <<locked>> | 90% | 37,507 psi | 59% | 2720 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 36,651 psi | 57% | 2615 fps | 98.7% |
| Norma 217 | <<locked>> | 86% | 32,663 psi | 51% | 2615 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 45,992 psi | 72% | 2897 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 41,350 psi | 65% | 2808 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 80% | 37,144 psi | 58% | 2674 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,848 psi | 45% | 1847 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,664 psi | 54% | 2690 fps | 97.8% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 40,321 psi | 63% | 2785 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 48,066 psi | 75% | 2861 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 46,586 psi | 73% | 2864 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,253 psi | 72% | 2858 fps | 99% |
| Somchem S361 | <<locked>> | 80% | 49,110 psi | 77% | 2841 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 52,721 psi | 83% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,050 psi | 74% | 2838 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 41,075 psi | 64% | 2710 fps | 98.4% |
| Vihtavuori N170 | <<locked>> | 92% | 53,476 psi | 84% | 2943 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 46,180 psi | 72% | 2844 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,672 psi | 72% | 2887 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 37,637 psi | 59% | 2690 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 86% | 41,452 psi | 65% | 2808 fps | 95.2% |
| Vihtavuori N570 | 88.9 gr | 92% | 49,255 psi | 77% | 2999 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,190 psi | 63% | 2812 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,482 psi | 68% | 2766 fps | 98.5% |
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 52 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 139gr | Hasler ARIETE. ADI AR 2218 delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,159 fps. ADI AR 2218 gives the best case fill at 100 %, and 52 of the 52 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 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, Hodgdon TrailBoss 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, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 139gr | Hasler ARIETE 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.