Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 145gr | CutEdge LZR MAX bullet and 49 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>> | 86% | 54,476 psi | 85% | 2890 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 53,882 psi | 84% | 2992 fps | 99% |
| ADI AR 2209 | <<locked>> | 84% | 55,767 psi | 87% | 2982 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 54,578 psi | 86% | 2995 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 94% | 53,766 psi | 84% | 2972 fps | 99.8% |
| ADI AR 2218 | <<locked>> | 98% | 54,476 psi | 85% | 3074 fps | 98.2% |
| ADI AR 2225 | <<locked>> | 98% | 57,014 psi | 89% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 55,535 psi | 87% | 2972 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,013 psi | 86% | 2989 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,840 psi | 89% | 2953 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 57,638 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 53,563 psi | 84% | 2976 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 56,420 psi | 88% | 3054 fps | 98.2% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3038 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,361 psi | 87% | 2953 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 54,447 psi | 85% | 2979 fps | 99.9% |
| Bofors RP30 | <<locked>> | 94% | 57,421 psi | 90% | 3038 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 55,013 psi | 86% | 2989 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 55,158 psi | 86% | 2992 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 57,334 psi | 90% | 2989 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 56,260 psi | 88% | 2969 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,825 psi | 87% | 2894 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 56,956 psi | 89% | 3110 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,623 psi | 59% | 1969 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 57,508 psi | 90% | 2969 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 88% | 56,884 psi | 89% | 3038 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3022 fps | 99.9% |
| Lovex S071 | <<locked>> | 92% | 56,362 psi | 88% | 2917 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3045 fps | 100% |
| Norma MRP | <<locked>> | 84% | 54,969 psi | 86% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 54,201 psi | 85% | 2995 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 90% | 56,942 psi | 89% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,566 psi | 60% | 2014 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 53,809 psi | 84% | 3031 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 57,609 psi | 90% | 3061 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 84% | 56,304 psi | 88% | 2956 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 84% | 55,187 psi | 86% | 2966 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 54,824 psi | 86% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 53,940 psi | 85% | 2881 fps | 99.2% |
| Somchem S385 | <<locked>> | 84% | 55,419 psi | 87% | 2930 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 55,709 psi | 87% | 2917 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,158 psi | 86% | 2933 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 54,563 psi | 86% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 54,433 psi | 85% | 3002 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 90% | 55,709 psi | 87% | 2995 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 92% | 53,635 psi | 84% | 2995 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 94% | 55,100 psi | 86% | 3061 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 57,580 psi | 90% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 55,419 psi | 87% | 2927 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% | 44,048 psi | 69% | 2723 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 46,354 psi | 73% | 2854 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 80% | 48,486 psi | 76% | 2864 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 43,903 psi | 69% | 2805 fps | 97.9% |
| ADI AR 2217 | <<locked>> | 82% | 34,809 psi | 55% | 2592 fps | 95.2% |
| ADI AR 2218 | <<locked>> | 94% | 46,731 psi | 73% | 2923 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 29,718 psi | 47% | 2490 fps | 95.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,327 psi | 76% | 2854 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,570 psi | 70% | 2808 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,076 psi | 68% | 2743 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,318 psi | 58% | 2677 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,516 psi | 78% | 2913 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 44,585 psi | 70% | 2841 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 96% | 47,993 psi | 75% | 2894 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,165 psi | 71% | 2772 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 41,234 psi | 65% | 2740 fps | 98.1% |
| Bofors RP30 | <<locked>> | 80% | 34,679 psi | 54% | 2602 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 44,570 psi | 70% | 2808 fps | 99% |
| Hodgdon H1000 | <<locked>> | 80% | 35,346 psi | 55% | 2608 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 80% | 46,296 psi | 73% | 2802 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,600 psi | 71% | 2789 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,170 psi | 82% | 2844 fps | 100% |
| Hodgdon Retumbo | 74.5 gr | 80% | 36,550 psi | 57% | 2720 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,239 psi | 44% | 1772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,108 psi | 74% | 2795 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 80% | 42,583 psi | 67% | 2785 fps | 97.6% |
| IMR 8133 Enduron | <<locked>> | 88% | 36,303 psi | 57% | 2651 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 37,739 psi | 59% | 2598 fps | 99.2% |
| Norma 217 | <<locked>> | 84% | 31,662 psi | 50% | 2549 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 47,572 psi | 75% | 2881 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 42,757 psi | 67% | 2795 fps | 98% |
| Ramshot Magnum | <<locked>> | 80% | 38,580 psi | 60% | 2667 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,834 psi | 45% | 1811 fps | 100% |
| ReloadSwiss RS 76 | 79.7 gr | 80% | 36,042 psi | 56% | 2690 fps | 98.7% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 38,609 psi | 61% | 2707 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 49,197 psi | 77% | 2838 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 80% | 48,008 psi | 75% | 2844 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,659 psi | 75% | 2841 fps | 99.4% |
| Somchem S361 | <<locked>> | 80% | 50,444 psi | 79% | 2825 fps | 98.7% |
| Somchem S385 | <<locked>> | 80% | 48,428 psi | 76% | 2818 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 42,177 psi | 66% | 2690 fps | 98.9% |
| Vihtavuori N170 | <<locked>> | 90% | 51,256 psi | 80% | 2867 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 47,659 psi | 75% | 2822 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,166 psi | 74% | 2874 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 80% | 38,972 psi | 61% | 2684 fps | 96.2% |
| Vihtavuori N568 | <<locked>> | 84% | 39,813 psi | 62% | 2733 fps | 95% |
| Vihtavuori N570 | 86.9 gr | 90% | 47,311 psi | 74% | 2920 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,032 psi | 66% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,643 psi | 70% | 2746 fps | 99% |
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 57 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 145gr | CutEdge LZR MAX. Hodgdon Retumbo delivers the highest muzzle velocity at 3,110 fps; across all powders the maximum-charge window runs from 1,969 fps to 3,110 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 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 145.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 145gr | CutEdge LZR MAX 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.