Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 140gr | Woodleigh PP SN bullet and 51 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 Hodgdon Retumbo.
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% | 57,725 psi | 90% | 2969 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 49,966 psi | 78% | 2907 fps | 96.2% |
| Accurate MAGPRO | <<locked>> | 84% | 56,956 psi | 89% | 3071 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 82% | 54,679 psi | 86% | 2999 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 57,435 psi | 90% | 3071 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 57,029 psi | 89% | 3048 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 96% | 53,954 psi | 85% | 3091 fps | 98% |
| ADI AR 2225 | <<locked>> | 96% | 56,652 psi | 89% | 3064 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 54,882 psi | 86% | 2995 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 82% | 54,331 psi | 85% | 2986 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 84% | 54,244 psi | 85% | 3009 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,130 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 57,014 psi | 89% | 3045 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 57,101 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 56,014 psi | 88% | 3071 fps | 98.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 56,347 psi | 88% | 3061 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 54,259 psi | 85% | 2966 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 57,348 psi | 90% | 3054 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,927 psi | 89% | 3061 fps | 99.9% |
| Bofors RP5 | <<locked>> | 84% | 54,244 psi | 85% | 3009 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 90% | 54,462 psi | 85% | 3009 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,130 psi | 88% | 3002 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,143 psi | 86% | 2986 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 90% | 56,579 psi | 89% | 3133 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,753 psi | 59% | 2014 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,159 psi | 88% | 2979 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 86% | 56,028 psi | 88% | 3054 fps | 99.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,651 psi | 87% | 3048 fps | 99.9% |
| Lovex S071 | <<locked>> | 90% | 56,115 psi | 88% | 2946 fps | 100% |
| Norma 217 | <<locked>> | 98% | 57,087 psi | 89% | 3071 fps | 100% |
| Norma MRP | <<locked>> | 82% | 54,273 psi | 85% | 3018 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 57,464 psi | 90% | 3074 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 56,246 psi | 88% | 3002 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,856 psi | 61% | 2064 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 53,577 psi | 84% | 3051 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 57,174 psi | 90% | 3081 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 82% | 54,998 psi | 86% | 2969 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 82% | 54,128 psi | 85% | 2979 fps | 99.9% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 2923 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,667 psi | 90% | 3035 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,536 psi | 89% | 2953 fps | 99.5% |
| Somchem S385 | <<locked>> | 82% | 54,520 psi | 85% | 2949 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 54,708 psi | 86% | 2933 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 54,389 psi | 85% | 2949 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 82% | 54,143 psi | 85% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,522 psi | 90% | 3081 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 88% | 55,201 psi | 87% | 3015 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 92% | 57,319 psi | 90% | 3084 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 92% | 54,694 psi | 86% | 3081 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 57,130 psi | 90% | 3058 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 54,346 psi | 85% | 2943 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% | 47,036 psi | 74% | 2805 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 46,340 psi | 73% | 2841 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 80% | 49,313 psi | 77% | 2940 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 80% | 51,097 psi | 80% | 2940 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 46,325 psi | 73% | 2881 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 37,130 psi | 58% | 2674 fps | 96.1% |
| ADI AR 2218 | 95.2 gr | 92% | 46,369 psi | 73% | 2940 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 31,923 psi | 50% | 2575 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,372 psi | 81% | 2936 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,879 psi | 80% | 2930 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,094 psi | 74% | 2884 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,818 psi | 72% | 2818 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,059 psi | 63% | 2759 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,895 psi | 83% | 2992 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 48,066 psi | 75% | 2930 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 94% | 48,341 psi | 76% | 2920 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,295 psi | 69% | 2785 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 43,918 psi | 69% | 2818 fps | 98.6% |
| Bofors RP30 | <<locked>> | 80% | 37,420 psi | 59% | 2687 fps | 96.2% |
| Bofors RP5 | <<locked>> | 80% | 47,094 psi | 74% | 2884 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 37,724 psi | 59% | 2690 fps | 97% |
| Hodgdon H4831 | <<locked>> | 80% | 48,733 psi | 76% | 2877 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,877 psi | 75% | 2861 fps | 98.2% |
| Hodgdon Retumbo | 78.1 gr | 80% | 39,073 psi | 61% | 2802 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,398 psi | 45% | 1814 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,429 psi | 77% | 2867 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 45,078 psi | 71% | 2861 fps | 98.1% |
| IMR 8133 Enduron | <<locked>> | 86% | 36,521 psi | 57% | 2677 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 40,451 psi | 63% | 2680 fps | 99.6% |
| Norma 217 | <<locked>> | 82% | 31,995 psi | 50% | 2579 fps | 96% |
| Norma MRP | <<locked>> | 80% | 50,531 psi | 79% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,745 psi | 72% | 2877 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 80% | 41,379 psi | 65% | 2746 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,153 psi | 46% | 1854 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,885 psi | 61% | 2779 fps | 99.3% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 38,783 psi | 61% | 2730 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 51,532 psi | 81% | 2910 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 50,589 psi | 79% | 2920 fps | 99.7% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 48,312 psi | 76% | 2861 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,241 psi | 79% | 2917 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 52,939 psi | 83% | 2897 fps | 99.1% |
| Somchem S385 | <<locked>> | 80% | 50,952 psi | 80% | 2890 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 44,730 psi | 70% | 2769 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 88% | 50,807 psi | 80% | 2887 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 80% | 50,647 psi | 79% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,966 psi | 78% | 2956 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 80% | 41,698 psi | 65% | 2766 fps | 96.9% |
| Vihtavuori N568 | <<locked>> | 84% | 42,801 psi | 67% | 2818 fps | 96% |
| Vihtavuori N570 | 89.2 gr | 88% | 47,268 psi | 74% | 2943 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,281 psi | 71% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,297 psi | 74% | 2825 fps | 99.3% |
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 51 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 140gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 2,014 fps to 3,133 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 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 140.0 gr projectile in 0.284" calls for a 1:13.0 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, Hodgdon Retumbo rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 140gr | Woodleigh PP SN 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.