Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | Peregrine Bushmaster (VRG-3) bullet and 99 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 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 84% | 55,782 psi | 87% | 2799 fps | 100% |
| Accurate 3100 | <<locked>> | 84% | 55,811 psi | 87% | 2799 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2831 fps | 98% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 2828 fps | 98% |
| Accurate MAGPRO | <<locked>> | 82% | 55,274 psi | 87% | 2904 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 82% | 55,303 psi | 87% | 2904 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 56,927 psi | 89% | 2887 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 56,768 psi | 89% | 2884 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,999 psi | 88% | 2904 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,840 psi | 88% | 2904 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,869 psi | 88% | 2890 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,680 psi | 87% | 2887 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,739 psi | 89% | 3012 fps | 99.3% |
| ADI AR 2218 | <<locked>> | 96% | 56,608 psi | 89% | 3009 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 94% | 55,695 psi | 87% | 2907 fps | 100% |
| ADI AR 2225 | <<locked>> | 94% | 55,506 psi | 87% | 2904 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,072 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,463 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,507 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,478 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,275 psi | 88% | 2894 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,737 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,534 psi | 85% | 2802 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,854 psi | 88% | 2881 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,680 psi | 87% | 2877 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,578 psi | 86% | 2920 fps | 98.7% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,389 psi | 85% | 2913 fps | 98.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 54,694 psi | 86% | 2907 fps | 98.4% |
| Alliant Reloder-50 | <<locked>> | 96% | 54,563 psi | 86% | 2904 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,405 psi | 88% | 2867 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,275 psi | 88% | 2864 fps | 99% |
| Bofors RP15 | <<locked>> | 86% | 55,883 psi | 88% | 2887 fps | 100% |
| Bofors RP15 | <<locked>> | 86% | 55,898 psi | 88% | 2890 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,608 psi | 87% | 2897 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,419 psi | 87% | 2897 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,478 psi | 89% | 2897 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,275 psi | 88% | 2894 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,261 psi | 90% | 2910 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,072 psi | 89% | 2904 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,491 psi | 85% | 2838 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 54,331 psi | 85% | 2835 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,334 psi | 90% | 2881 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,145 psi | 90% | 2874 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,637 psi | 87% | 2969 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,434 psi | 87% | 2966 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,826 psi | 59% | 1896 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,942 psi | 59% | 1896 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,578 psi | 86% | 2818 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,418 psi | 85% | 2815 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 54,665 psi | 86% | 2890 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 54,462 psi | 85% | 2887 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,101 psi | 89% | 2828 fps | 96.5% |
| IMR 7977 Enduron | <<locked>> | 90% | 56,942 psi | 89% | 2822 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,433 psi | 85% | 2890 fps | 100% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,273 psi | 85% | 2887 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,418 psi | 85% | 2779 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,215 psi | 85% | 2776 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,956 psi | 88% | 2910 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,767 psi | 87% | 2907 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,623 psi | 89% | 2907 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,463 psi | 88% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,072 psi | 88% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 55,883 psi | 88% | 2907 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,694 psi | 86% | 2838 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,520 psi | 85% | 2835 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,972 psi | 61% | 1942 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,928 psi | 61% | 1939 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,637 psi | 89% | 2949 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,449 psi | 88% | 2946 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,724 psi | 87% | 2920 fps | 99.8% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,521 psi | 87% | 2920 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 57,014 psi | 89% | 2858 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 57,058 psi | 89% | 2858 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,289 psi | 88% | 2867 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,289 psi | 88% | 2867 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2841 fps | 98% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,085 psi | 85% | 2838 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,927 psi | 88% | 2864 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,927 psi | 88% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,594 psi | 89% | 2835 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,405 psi | 88% | 2831 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,840 psi | 89% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,666 psi | 89% | 2822 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,405 psi | 88% | 2854 fps | 97.8% |
| Vihtavuori N170 | <<locked>> | 90% | 56,260 psi | 88% | 2851 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 56,144 psi | 88% | 2831 fps | 100% |
| Vihtavuori N555 | <<locked>> | 82% | 55,927 psi | 88% | 2828 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,956 psi | 88% | 2917 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 55,767 psi | 87% | 2913 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 88% | 57,508 psi | 90% | 2913 fps | 100% |
| Vihtavuori N565 | <<locked>> | 88% | 57,348 psi | 90% | 2910 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 55,927 psi | 88% | 2927 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 90% | 55,753 psi | 87% | 2923 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 92% | 57,566 psi | 90% | 2989 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 92% | 57,392 psi | 90% | 2986 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,898 psi | 88% | 2890 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,724 psi | 87% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,681 psi | 89% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,492 psi | 89% | 2831 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% | 48,573 psi | 76% | 2690 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 48,573 psi | 76% | 2694 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,223 psi | 71% | 2703 fps | 96.1% |
| Accurate 8700 | <<locked>> | 96% | 45,092 psi | 71% | 2700 fps | 96% |
| Accurate MAGPRO | <<locked>> | 80% | 51,416 psi | 81% | 2841 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 80% | 51,242 psi | 80% | 2838 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 53,127 psi | 83% | 2831 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 53,127 psi | 83% | 2831 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,573 psi | 76% | 2785 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 48,385 psi | 76% | 2782 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 35,998 psi | 56% | 2526 fps | 97% |
| ADI AR 2217 | <<locked>> | 80% | 35,998 psi | 56% | 2530 fps | 97% |
| ADI AR 2218 | 90.7 gr | 88% | 41,742 psi | 65% | 2723 fps | 95.4% |
| ADI AR 2218 | 88.7 gr | 88% | 41,611 psi | 65% | 2717 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 33,359 psi | 52% | 2500 fps | 98.8% |
| ADI AR 2225 | <<locked>> | 80% | 33,228 psi | 52% | 2497 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,345 psi | 84% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,808 psi | 83% | 2822 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,837 psi | 83% | 2822 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,197 psi | 77% | 2785 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,037 psi | 77% | 2779 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,805 psi | 75% | 2707 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,616 psi | 75% | 2703 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,959 psi | 66% | 2661 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,945 psi | 66% | 2661 fps | 100% |
| Alliant Reloder-33 | 88.2 gr | 86% | 43,163 psi | 68% | 2710 fps | 95.8% |
| Alliant Reloder-33 | 88.2 gr | 86% | 43,018 psi | 67% | 2707 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 90% | 43,439 psi | 68% | 2703 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 90% | 43,294 psi | 68% | 2700 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,122 psi | 72% | 2694 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,977 psi | 72% | 2690 fps | 97% |
| Bofors RP15 | <<locked>> | 80% | 45,629 psi | 72% | 2720 fps | 99.6% |
| Bofors RP15 | <<locked>> | 80% | 45,629 psi | 72% | 2720 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 38,986 psi | 61% | 2598 fps | 97.9% |
| Bofors RP30 | <<locked>> | 80% | 38,986 psi | 61% | 2598 fps | 97.9% |
| Bofors RP5 | <<locked>> | 80% | 49,197 psi | 77% | 2785 fps | 99.9% |
| Bofors RP5 | <<locked>> | 80% | 49,037 psi | 77% | 2779 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 39,392 psi | 62% | 2605 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 80% | 39,247 psi | 62% | 2602 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 80% | 50,850 psi | 80% | 2779 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 80% | 50,705 psi | 79% | 2776 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,937 psi | 78% | 2762 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,792 psi | 78% | 2762 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,220 psi | 65% | 2720 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,031 psi | 64% | 2720 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,500 psi | 45% | 1703 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,442 psi | 45% | 1703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,097 psi | 80% | 2762 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,111 psi | 80% | 2759 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 47,326 psi | 74% | 2769 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 80% | 47,137 psi | 74% | 2766 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,403 psi | 84% | 2766 fps | 95.6% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,243 psi | 83% | 2766 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 82% | 33,156 psi | 52% | 2474 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 82% | 33,011 psi | 52% | 2470 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 41,713 psi | 65% | 2575 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 41,698 psi | 65% | 2572 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,183 psi | 49% | 2438 fps | 97% |
| Norma 217 | <<locked>> | 80% | 31,053 psi | 49% | 2431 fps | 96.9% |
| Norma MRP | <<locked>> | 80% | 52,649 psi | 83% | 2851 fps | 100% |
| Norma MRP | <<locked>> | 80% | 52,663 psi | 83% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,153 psi | 75% | 2785 fps | 99.6% |
| Ramshot Grand | <<locked>> | 80% | 47,950 psi | 75% | 2782 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 43,250 psi | 68% | 2654 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 43,265 psi | 68% | 2654 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,283 psi | 46% | 1745 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,225 psi | 46% | 1742 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,944 psi | 64% | 2694 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,756 psi | 64% | 2690 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,565 psi | 59% | 2582 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,420 psi | 59% | 2579 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 53,505 psi | 84% | 2802 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 80% | 53,330 psi | 84% | 2799 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 52,707 psi | 83% | 2815 fps | 100% |
| Rottweil R 905 | <<locked>> | 80% | 52,533 psi | 82% | 2812 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 43,918 psi | 69% | 2657 fps | 95.2% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 43,627 psi | 68% | 2654 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,359 psi | 82% | 2812 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,199 psi | 82% | 2808 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 52,924 psi | 83% | 2782 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 52,765 psi | 83% | 2779 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,354 psi | 73% | 2667 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 46,354 psi | 73% | 2664 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 45,803 psi | 72% | 2674 fps | 95.1% |
| Vihtavuori N170 | <<locked>> | 84% | 45,687 psi | 72% | 2667 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 52,591 psi | 82% | 2782 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 52,417 psi | 82% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,040 psi | 82% | 2854 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 80% | 52,040 psi | 82% | 2854 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 43,381 psi | 68% | 2674 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 80% | 43,207 psi | 68% | 2671 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 80% | 38,609 psi | 61% | 2605 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 80% | 38,435 psi | 60% | 2598 fps | 95.7% |
| Vihtavuori N570 | 82.9 gr | 84% | 42,714 psi | 67% | 2720 fps | 95.1% |
| Vihtavuori N570 | 82.9 gr | 84% | 42,569 psi | 67% | 2717 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 47,921 psi | 75% | 2776 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 47,718 psi | 75% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,153 psi | 77% | 2723 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,979 psi | 77% | 2720 fps | 99.9% |
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 99 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | Peregrine Bushmaster (VRG-3). ADI AR 2218 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,012 fps. Accurate 8700 gives the best case fill at 100 %, and 99 of the 99 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 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Accurate 8700, 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. ADI AR 2218, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 160gr | Peregrine Bushmaster (VRG-3) 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.