Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 160gr | Nosler AccuBond bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-25, Winchester StaBALL HD 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% | 54,824 psi | 86% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,217 psi | 88% | 2881 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,478 psi | 89% | 2999 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 57,421 psi | 90% | 3002 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 57,276 psi | 90% | 2841 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,145 psi | 90% | 2940 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 54,824 psi | 86% | 2943 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2838 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,743 psi | 69% | 2799 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,072 psi | 89% | 2936 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,360 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,478 psi | 89% | 2927 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,839 psi | 86% | 2940 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,043 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 2969 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,347 psi | 88% | 2999 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,623 psi | 89% | 2904 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 57,334 psi | 90% | 2976 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,213 psi | 80% | 2910 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 54,839 psi | 86% | 2940 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 55,071 psi | 86% | 2828 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2927 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 54,346 psi | 85% | 2881 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,029 psi | 89% | 2894 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 54,578 psi | 86% | 2877 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,464 psi | 90% | 2923 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,435 psi | 90% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,143 psi | 85% | 3038 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 54,520 psi | 85% | 2917 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1798 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,579 psi | 89% | 2867 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,492 psi | 89% | 2851 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,710 psi | 89% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,883 psi | 88% | 2864 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 56,449 psi | 88% | 2982 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 57,101 psi | 89% | 2848 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,361 psi | 87% | 2844 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 2864 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,696 psi | 90% | 2923 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,320 psi | 62% | 2720 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 54,665 psi | 86% | 2959 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 54,752 psi | 86% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,087 psi | 89% | 2999 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 57,174 psi | 90% | 2923 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,579 psi | 87% | 2936 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,014 psi | 60% | 1844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,391 psi | 88% | 2907 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,462 psi | 85% | 2930 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3035 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,559 psi | 78% | 2913 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 56,550 psi | 89% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,679 psi | 86% | 2854 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 55,985 psi | 88% | 2913 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 55,071 psi | 86% | 2828 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,101 psi | 89% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,361 psi | 87% | 2844 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,144 psi | 88% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,449 psi | 88% | 2805 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,550 psi | 87% | 2910 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,999 psi | 88% | 2822 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,217 psi | 88% | 2844 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 55,056 psi | 86% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,507 psi | 89% | 2887 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,363 psi | 90% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,391 psi | 88% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,202 psi | 88% | 2871 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,709 psi | 87% | 2861 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,592 psi | 86% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,534 psi | 85% | 2956 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 54,244 psi | 85% | 2933 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,865 psi | 80% | 2923 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,956 psi | 88% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,346 psi | 85% | 2881 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,577 psi | 84% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,608 psi | 89% | 2887 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% | 34,360 psi | 54% | 2464 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 46,035 psi | 72% | 2717 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 39,711 psi | 62% | 2680 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 88% | 46,369 psi | 73% | 2808 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 53,824 psi | 84% | 2789 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,377 psi | 60% | 2592 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 41,771 psi | 65% | 2694 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 40,176 psi | 63% | 2654 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 33,823 psi | 53% | 2556 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,034 psi | 69% | 2723 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,923 psi | 80% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,392 psi | 60% | 2585 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,521 psi | 57% | 2582 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,837 psi | 51% | 2490 fps | 99.6% |
| Alliant Reloder-25 | 56.7 gr | 80% | 28,732 psi | 45% | 2395 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,839 psi | 56% | 2625 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,243 psi | 83% | 2844 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 36,405 psi | 57% | 2579 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 38,972 psi | 61% | 2671 fps | 95.4% |
| Bofors RP5 | <<locked>> | 82% | 36,521 psi | 57% | 2582 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 48,559 psi | 76% | 2720 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,464 psi | 60% | 2618 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 47,659 psi | 75% | 2766 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,140 psi | 79% | 2779 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 44,657 psi | 70% | 2703 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,830 psi | 69% | 2684 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,510 psi | 65% | 2605 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,361 psi | 57% | 2654 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 47,166 psi | 74% | 2789 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1608 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,121 psi | 69% | 2654 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,937 psi | 78% | 2746 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 43,700 psi | 68% | 2661 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,468 psi | 68% | 2644 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 40,176 psi | 63% | 2671 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,456 psi | 74% | 2694 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,774 psi | 72% | 2684 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 29,602 psi | 46% | 2343 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,976 psi | 69% | 2687 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 34,418 psi | 54% | 2598 fps | 95.8% |
| Norma MRP | 59.4 gr | 80% | 35,607 psi | 56% | 2585 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 44,918 psi | 70% | 2700 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,943 psi | 63% | 2680 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 43,801 psi | 69% | 2697 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 35,505 psi | 56% | 2556 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 45% | 1647 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,847 psi | 72% | 2736 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,034 psi | 69% | 2753 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,156 psi | 52% | 2566 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,050 psi | 72% | 2848 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 52,794 psi | 83% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,740 psi | 62% | 2572 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,579 psi | 59% | 2569 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 48,559 psi | 76% | 2720 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,456 psi | 74% | 2694 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,774 psi | 72% | 2684 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,924 psi | 83% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,514 psi | 73% | 2644 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,260 psi | 58% | 2562 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 52,620 psi | 82% | 2769 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,120 psi | 68% | 2615 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,134 psi | 66% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,247 psi | 60% | 2552 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 50,328 psi | 79% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,528 psi | 73% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,389 psi | 55% | 2484 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 45,818 psi | 72% | 2700 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,028 psi | 58% | 2569 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 86% | 44,208 psi | 69% | 2766 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 90% | 41,263 psi | 65% | 2690 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 47,398 psi | 74% | 2858 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,498 psi | 71% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,659 psi | 75% | 2766 fps | 99.3% |
| Winchester StaBALL HD | 58.8 gr | 80% | 29,182 psi | 46% | 2503 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,318 psi | 58% | 2533 fps | 95.5% |
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 80 powders for 7 mm Weath. Mag. loaded with the .284 | 160gr | Nosler AccuBond. Hodgdon Retumbo delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,038 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 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 1:10.5 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. Alliant Reloder-25, Winchester StaBALL HD, Norma MRP rank at the top here: for 7 mm Weath. Mag. with the .284 | 160gr | Nosler AccuBond they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.