Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 140gr | Barnes X BT bullet and 49 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 ReloadSwiss RS 80.
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% | 56,811 psi | 89% | 2946 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2946 fps | 96.7% |
| Accurate MAGPRO | <<locked>> | 82% | 55,245 psi | 87% | 3038 fps | 99% |
| ADI AR 2209 | <<locked>> | 82% | 56,449 psi | 88% | 3018 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,390 psi | 87% | 3035 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 92% | 54,795 psi | 86% | 3012 fps | 99.8% |
| ADI AR 2218 | <<locked>> | 96% | 55,840 psi | 88% | 3123 fps | 98.3% |
| ADI AR 2225 | <<locked>> | 94% | 54,824 psi | 86% | 3041 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,681 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,173 psi | 88% | 3009 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,347 psi | 88% | 3038 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,766 psi | 86% | 2953 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,187 psi | 86% | 3018 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,302 psi | 85% | 3045 fps | 97.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,303 psi | 87% | 3045 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,419 psi | 87% | 2982 fps | 98% |
| Bofors RP15 | <<locked>> | 86% | 55,782 psi | 87% | 3025 fps | 99.9% |
| Bofors RP30 | <<locked>> | 90% | 55,593 psi | 87% | 3035 fps | 99.8% |
| Bofors RP5 | <<locked>> | 84% | 56,347 psi | 88% | 3038 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,115 psi | 88% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,056 psi | 85% | 2963 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,913 psi | 89% | 3009 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,404 psi | 85% | 3100 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2011 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,346 psi | 85% | 2946 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 86% | 57,696 psi | 90% | 3074 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,404 psi | 85% | 3028 fps | 99.8% |
| Lovex S071 | <<locked>> | 88% | 55,288 psi | 87% | 2927 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,854 psi | 88% | 3054 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,507 psi | 89% | 3051 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 55,448 psi | 87% | 3041 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 86% | 54,346 psi | 85% | 2969 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,160 psi | 61% | 2057 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,622 psi | 87% | 3084 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,448 psi | 87% | 3051 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 82% | 56,695 psi | 89% | 2989 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 82% | 56,202 psi | 88% | 3005 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 2963 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,825 psi | 87% | 3002 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,681 psi | 89% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,739 psi | 89% | 2959 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,637 psi | 89% | 2979 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 56,768 psi | 89% | 2986 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,637 psi | 87% | 3048 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 88% | 57,566 psi | 90% | 3048 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 90% | 55,680 psi | 87% | 3058 fps | 99% |
| Vihtavuori N570 | <<locked>> | 92% | 57,072 psi | 89% | 3120 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,622 psi | 87% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,347 psi | 88% | 2966 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% | 49,995 psi | 78% | 2844 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 48,559 psi | 76% | 2884 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 80% | 51,648 psi | 81% | 2979 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 52,837 psi | 83% | 2963 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 48,196 psi | 76% | 2910 fps | 98.7% |
| ADI AR 2217 | <<locked>> | 80% | 36,782 psi | 58% | 2661 fps | 95.9% |
| ADI AR 2218 | 90.9 gr | 90% | 45,049 psi | 71% | 2907 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 34,345 psi | 54% | 2641 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,185 psi | 83% | 2963 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,692 psi | 83% | 2953 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,327 psi | 77% | 2920 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,037 psi | 75% | 2851 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,322 psi | 66% | 2802 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 47,021 psi | 74% | 2913 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,993 psi | 75% | 2917 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,774 psi | 72% | 2808 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 46,093 psi | 72% | 2858 fps | 99% |
| Bofors RP30 | <<locked>> | 80% | 40,016 psi | 63% | 2746 fps | 97.2% |
| Bofors RP5 | <<locked>> | 80% | 49,327 psi | 77% | 2920 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 39,755 psi | 62% | 2733 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 50,662 psi | 79% | 2907 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,777 psi | 78% | 2890 fps | 98.5% |
| Hodgdon Retumbo | 76.3 gr | 80% | 41,379 psi | 65% | 2858 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,718 psi | 45% | 1808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,082 psi | 80% | 2890 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 80% | 47,094 psi | 74% | 2897 fps | 98.5% |
| IMR 8133 Enduron | <<locked>> | 84% | 36,767 psi | 58% | 2684 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 43,439 psi | 68% | 2730 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 32,576 psi | 51% | 2595 fps | 96.4% |
| Norma MRP | <<locked>> | 80% | 52,779 psi | 83% | 2992 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,877 psi | 75% | 2917 fps | 99% |
| Ramshot Magnum | <<locked>> | 80% | 43,787 psi | 69% | 2792 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,544 psi | 46% | 1850 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,408 psi | 65% | 2835 fps | 99.7% |
| ReloadSwiss RS 80 | 82.3 gr | 80% | 38,508 psi | 60% | 2726 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 53,185 psi | 83% | 2933 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 80% | 52,663 psi | 83% | 2949 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 50,850 psi | 80% | 2904 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,301 psi | 82% | 2946 fps | 99.8% |
| Somchem S385 | <<locked>> | 80% | 53,243 psi | 83% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,862 psi | 73% | 2802 fps | 99.5% |
| Vihtavuori N170 | <<locked>> | 88% | 53,040 psi | 83% | 2920 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 53,243 psi | 83% | 2933 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,996 psi | 81% | 2989 fps | 99% |
| Vihtavuori N565 | <<locked>> | 80% | 44,454 psi | 70% | 2818 fps | 97.7% |
| Vihtavuori N568 | <<locked>> | 82% | 42,192 psi | 66% | 2805 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 88% | 49,559 psi | 78% | 2986 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,066 psi | 75% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,284 psi | 77% | 2851 fps | 99.5% |
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 49 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 140gr | Barnes X BT. ADI AR 2218 delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 2,011 fps to 3,123 fps. Accurate 8700 gives the best case fill at 100 %, and 49 of the 49 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 140.0 gr projectile in 0.284" calls for a 1:10.5 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. Hodgdon Retumbo, ADI AR 2218, ReloadSwiss RS 80 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 140gr | Barnes X BT 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.