Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 170gr | Norma ORYX bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N560.
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>> | 92% | 56,173 psi | 88% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,232 psi | 90% | 2818 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,070 psi | 85% | 2887 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 90% | 54,824 psi | 86% | 2890 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 88% | 54,244 psi | 85% | 2825 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,738 psi | 87% | 2887 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2858 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,578 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,392 psi | 90% | 2871 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,014 psi | 88% | 2884 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,624 psi | 90% | 2851 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,029 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,085 psi | 85% | 2884 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,913 psi | 89% | 2851 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 55,201 psi | 87% | 2871 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2923 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 56,014 psi | 88% | 2884 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 55,288 psi | 87% | 2762 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,332 psi | 87% | 2881 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 54,955 psi | 86% | 2818 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,392 psi | 90% | 2831 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 55,579 psi | 87% | 2828 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,360 psi | 85% | 2808 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,737 psi | 86% | 2743 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,927 psi | 88% | 2995 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,405 psi | 87% | 2854 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 59% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,072 psi | 89% | 2805 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,637 psi | 89% | 2785 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,522 psi | 90% | 2812 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,449 psi | 88% | 2812 fps | 99% |
| IMR 7828 SSC | <<locked>> | 92% | 53,940 psi | 85% | 2871 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,845 psi | 69% | 2726 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 57,609 psi | 90% | 2785 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,738 psi | 87% | 2782 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,464 psi | 90% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,520 psi | 85% | 2805 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 44,280 psi | 69% | 2753 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 56,028 psi | 88% | 2904 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,405 psi | 87% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,534 psi | 85% | 2887 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 84% | 54,288 psi | 85% | 2805 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,261 psi | 90% | 2884 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 60% | 1808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,363 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,521 psi | 87% | 2867 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,724 psi | 89% | 2992 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 2949 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 55,187 psi | 86% | 2792 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 57,043 psi | 89% | 2861 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,288 psi | 87% | 2762 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,609 psi | 90% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,738 psi | 87% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,521 psi | 89% | 2740 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,608 psi | 89% | 2854 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 56,739 psi | 89% | 2792 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 56,231 psi | 88% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,421 psi | 90% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,638 psi | 90% | 2723 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,101 psi | 89% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,232 psi | 90% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,420 psi | 88% | 2799 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,999 psi | 88% | 2825 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,724 psi | 87% | 2904 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 55,985 psi | 88% | 2890 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 2949 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 2940 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,521 psi | 89% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,201 psi | 87% | 2822 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,173 psi | 88% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,305 psi | 90% | 2828 fps | 99.8% |
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% | 37,681 psi | 59% | 2477 fps | 98.8% |
| Accurate 4350 | <<locked>> | 80% | 50,125 psi | 79% | 2713 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,814 psi | 64% | 2635 fps | 96.5% |
| Accurate MAGPRO | <<locked>> | 82% | 41,292 psi | 65% | 2638 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 41,481 psi | 65% | 2595 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 82% | 39,755 psi | 62% | 2589 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 90% | 38,479 psi | 60% | 2559 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 30,530 psi | 48% | 2405 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,776 psi | 75% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,684 psi | 65% | 2592 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,507 psi | 59% | 2539 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,289 psi | 57% | 2497 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,314 psi | 49% | 2415 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,147 psi | 63% | 2644 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,398 psi | 74% | 2680 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 34,882 psi | 55% | 2474 fps | 95.5% |
| Bofors RP30 | <<locked>> | 88% | 37,927 psi | 59% | 2579 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 37,507 psi | 59% | 2539 fps | 96.6% |
| Bofors RP7 | <<locked>> | 80% | 52,040 psi | 82% | 2710 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 36,709 psi | 58% | 2523 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 51,459 psi | 81% | 2762 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 53,795 psi | 84% | 2776 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 39,639 psi | 62% | 2536 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,655 psi | 65% | 2579 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,020 psi | 71% | 2595 fps | 100% |
| Hodgdon Retumbo | 60.7 gr | 82% | 32,793 psi | 51% | 2497 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 51,547 psi | 81% | 2795 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 44% | 1575 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,282 psi | 74% | 2648 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,374 psi | 84% | 2733 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,442 psi | 74% | 2654 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,104 psi | 64% | 2533 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 82% | 38,363 psi | 60% | 2569 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,348 psi | 60% | 2608 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 50,923 psi | 80% | 2684 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,240 psi | 77% | 2677 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,518 psi | 51% | 2356 fps | 97.4% |
| Norma 204 | <<locked>> | 80% | 47,703 psi | 75% | 2690 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 31,473 psi | 49% | 2454 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 39,392 psi | 62% | 2605 fps | 98.4% |
| Norma URP | <<locked>> | 80% | 48,718 psi | 76% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,985 psi | 60% | 2572 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 47,645 psi | 75% | 2697 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 31,575 psi | 49% | 2395 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,689 psi | 45% | 1614 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,038 psi | 78% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,196 psi | 76% | 2753 fps | 100% |
| ReloadSwiss RS 76 | 64.9 gr | 82% | 31,720 psi | 50% | 2467 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,162 psi | 65% | 2680 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 42,743 psi | 67% | 2572 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 80% | 41,031 psi | 64% | 2579 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 80% | 52,040 psi | 82% | 2710 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,923 psi | 80% | 2684 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,240 psi | 77% | 2677 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,806 psi | 78% | 2635 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,698 psi | 64% | 2572 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 43,511 psi | 68% | 2562 fps | 96.4% |
| Somchem S365 | <<locked>> | 80% | 46,006 psi | 72% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,553 psi | 65% | 2559 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 54,012 psi | 85% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,270 psi | 79% | 2690 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,172 psi | 57% | 2441 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 80% | 49,385 psi | 77% | 2690 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,538 psi | 64% | 2569 fps | 100% |
| Vihtavuori N560 | 61.4 gr | 80% | 39,407 psi | 62% | 2595 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 86% | 39,856 psi | 62% | 2592 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 92% | 42,641 psi | 67% | 2697 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 98% | 49,792 psi | 78% | 2871 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,226 psi | 77% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,692 psi | 81% | 2766 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,866 psi | 52% | 2530 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,029 psi | 60% | 2487 fps | 96.7% |
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 79 powders for 7 mm Weath. Mag. loaded with the .284 | 170gr | Norma ORYX. Hodgdon Retumbo delivers the highest muzzle velocity at 2,995 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,995 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 170.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, ReloadSwiss RS 76, Vihtavuori N560 rank at the top here: for 7 mm Weath. Mag. with the .284 | 170gr | Norma ORYX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron 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.