Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 160gr | Peregrine VRG-3 bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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>> | 94% | 54,563 psi | 86% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,985 psi | 88% | 2887 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,478 psi | 89% | 3009 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 57,551 psi | 90% | 3015 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 57,261 psi | 90% | 2848 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,145 psi | 90% | 2949 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 54,926 psi | 86% | 2953 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2848 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,656 psi | 68% | 2805 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,261 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,447 psi | 85% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,637 psi | 89% | 2940 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,839 psi | 86% | 2949 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,072 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,565 psi | 89% | 3009 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,710 psi | 89% | 2917 fps | 96.5% |
| Bofors RP15 | <<locked>> | 98% | 57,638 psi | 90% | 2989 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,256 psi | 80% | 2917 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 54,839 psi | 86% | 2949 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 54,824 psi | 86% | 2835 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,230 psi | 85% | 2940 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 84% | 54,331 psi | 85% | 2887 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,884 psi | 89% | 2900 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 54,926 psi | 86% | 2894 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,522 psi | 90% | 2933 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,435 psi | 90% | 2864 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,259 psi | 85% | 3051 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 54,621 psi | 86% | 2923 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,014 psi | 58% | 1808 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,579 psi | 89% | 2877 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,391 psi | 88% | 2861 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,594 psi | 89% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,796 psi | 87% | 2874 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 56,521 psi | 89% | 2989 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 57,058 psi | 89% | 2858 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,274 psi | 87% | 2854 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,056 psi | 85% | 2877 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 39,131 psi | 61% | 2723 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 54,636 psi | 86% | 2969 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 54,795 psi | 86% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,392 psi | 90% | 3012 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 57,319 psi | 90% | 2933 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,637 psi | 87% | 2943 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1850 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,202 psi | 88% | 2913 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,665 psi | 86% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,806 psi | 78% | 2927 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 82% | 56,231 psi | 88% | 2835 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,665 psi | 86% | 2864 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 56,101 psi | 88% | 2927 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 54,824 psi | 86% | 2835 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,058 psi | 89% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,274 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,188 psi | 88% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,362 psi | 88% | 2815 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,666 psi | 87% | 2923 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,796 psi | 87% | 2828 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,144 psi | 88% | 2854 fps | 98.3% |
| Somchem S365 | <<locked>> | 88% | 54,998 psi | 86% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,434 psi | 88% | 2897 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,145 psi | 90% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,391 psi | 88% | 2864 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,130 psi | 88% | 2877 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,579 psi | 87% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,534 psi | 85% | 2890 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,534 psi | 85% | 2963 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 98% | 54,244 psi | 85% | 2940 fps | 98.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,053 psi | 80% | 2933 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,072 psi | 88% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,331 psi | 85% | 2887 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,853 psi | 84% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,579 psi | 89% | 2897 fps | 99.5% |
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% | 33,736 psi | 53% | 2457 fps | 97.1% |
| Accurate 4350 | <<locked>> | 80% | 45,571 psi | 71% | 2720 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 39,523 psi | 62% | 2684 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 88% | 46,267 psi | 73% | 2815 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 53,838 psi | 84% | 2799 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,174 psi | 60% | 2595 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 41,640 psi | 65% | 2700 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 40,016 psi | 63% | 2661 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 92% | 33,518 psi | 53% | 2556 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,961 psi | 69% | 2730 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,763 psi | 80% | 2848 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,145 psi | 60% | 2589 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,332 psi | 57% | 2585 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,518 psi | 51% | 2487 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,311 psi | 44% | 2392 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,549 psi | 56% | 2625 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,345 psi | 84% | 2858 fps | 95.7% |
| Bofors RP15 | <<locked>> | 84% | 36,042 psi | 56% | 2575 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 38,798 psi | 61% | 2671 fps | 95.4% |
| Bofors RP5 | <<locked>> | 82% | 36,332 psi | 57% | 2585 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 48,370 psi | 76% | 2726 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,305 psi | 60% | 2625 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 47,427 psi | 74% | 2772 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 50,024 psi | 78% | 2789 fps | 99% |
| Hodgdon H4831 | <<locked>> | 86% | 44,527 psi | 70% | 2710 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,714 psi | 69% | 2694 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,321 psi | 65% | 2612 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,027 psi | 56% | 2657 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 47,079 psi | 74% | 2795 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 43% | 1614 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,990 psi | 69% | 2661 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,922 psi | 78% | 2753 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 43,410 psi | 68% | 2667 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,207 psi | 68% | 2648 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 39,987 psi | 63% | 2677 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,239 psi | 74% | 2700 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,469 psi | 71% | 2687 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 28,863 psi | 45% | 2329 fps | 95% |
| Norma 204 | <<locked>> | 80% | 43,976 psi | 69% | 2694 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 34,040 psi | 53% | 2595 fps | 95.7% |
| Norma MRP | 60.7 gr | 80% | 35,375 psi | 55% | 2589 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 44,744 psi | 70% | 2707 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,682 psi | 62% | 2684 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,758 psi | 69% | 2703 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 35,273 psi | 55% | 2556 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 44% | 1654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,701 psi | 72% | 2743 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,990 psi | 69% | 2759 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,837 psi | 51% | 2566 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,050 psi | 72% | 2858 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 52,489 psi | 82% | 2779 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,363 psi | 62% | 2572 fps | 95% |
| Rottweil R 905 | <<locked>> | 80% | 37,304 psi | 58% | 2572 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 48,370 psi | 76% | 2726 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,239 psi | 74% | 2700 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,469 psi | 71% | 2687 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,736 psi | 83% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,224 psi | 72% | 2648 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,985 psi | 58% | 2562 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 52,417 psi | 82% | 2779 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,873 psi | 67% | 2621 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 41,901 psi | 66% | 2664 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,855 psi | 59% | 2556 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 50,140 psi | 79% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,340 psi | 73% | 2703 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,012 psi | 55% | 2484 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 45,513 psi | 71% | 2703 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,419 psi | 57% | 2562 fps | 99.5% |
| Vihtavuori N560 | 63.7 gr | 84% | 41,060 psi | 64% | 2707 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 41,002 psi | 64% | 2694 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 98% | 47,311 psi | 74% | 2867 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,426 psi | 71% | 2664 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,427 psi | 74% | 2772 fps | 99.4% |
| Winchester StaBALL HD | 60.1 gr | 80% | 28,790 psi | 45% | 2500 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,130 psi | 58% | 2539 fps | 95.6% |
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 75 powders for 7 mm Weath. Mag. loaded with the .284 | 160gr | Peregrine VRG-3. Hodgdon Retumbo delivers the highest muzzle velocity at 3,051 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,051 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, 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. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for 7 mm Weath. Mag. with the .284 | 160gr | Peregrine 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.