Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 160gr | Sierra Tipped MatchKing 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 94% | 54,694 psi | 86% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,347 psi | 88% | 2884 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,362 psi | 88% | 2999 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 57,348 psi | 90% | 3002 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 57,130 psi | 90% | 2838 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,043 psi | 89% | 2940 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 54,708 psi | 86% | 2940 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2835 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,656 psi | 68% | 2795 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,971 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,505 psi | 85% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,362 psi | 88% | 2927 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,752 psi | 86% | 2936 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,912 psi | 88% | 2910 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2969 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,260 psi | 88% | 2999 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,550 psi | 89% | 2900 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 57,276 psi | 90% | 2976 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 2907 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 54,752 psi | 86% | 2936 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 54,926 psi | 86% | 2825 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2927 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 54,215 psi | 85% | 2881 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,898 psi | 89% | 2890 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 54,737 psi | 86% | 2881 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,348 psi | 90% | 2923 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,319 psi | 90% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3038 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 54,404 psi | 85% | 2913 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1801 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,463 psi | 88% | 2864 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,391 psi | 88% | 2851 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,623 psi | 89% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,825 psi | 87% | 2864 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 56,333 psi | 88% | 2979 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 57,014 psi | 89% | 2848 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,288 psi | 87% | 2844 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2861 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,566 psi | 90% | 2923 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,233 psi | 61% | 2720 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 54,549 psi | 85% | 2959 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 54,665 psi | 86% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,971 psi | 89% | 2999 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 57,058 psi | 89% | 2923 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,477 psi | 87% | 2933 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 59% | 1841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,260 psi | 88% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,331 psi | 85% | 2930 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,650 psi | 86% | 3035 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 2913 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 56,449 psi | 88% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,592 psi | 86% | 2851 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 55,912 psi | 88% | 2913 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 54,926 psi | 86% | 2825 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,014 psi | 89% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,288 psi | 87% | 2844 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,999 psi | 88% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,405 psi | 88% | 2805 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,477 psi | 87% | 2910 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,898 psi | 88% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,115 psi | 88% | 2844 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 54,911 psi | 86% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,376 psi | 88% | 2887 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,276 psi | 90% | 2792 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,536 psi | 89% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,086 psi | 88% | 2867 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,637 psi | 87% | 2861 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,462 psi | 85% | 2884 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,418 psi | 85% | 2953 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 54,201 psi | 85% | 2933 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,778 psi | 80% | 2923 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,840 psi | 88% | 2812 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,476 psi | 85% | 2881 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,653 psi | 90% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,492 psi | 89% | 2884 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% | 34,272 psi | 54% | 2464 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 45,905 psi | 72% | 2717 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 39,639 psi | 62% | 2680 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 88% | 46,253 psi | 72% | 2808 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 53,679 psi | 84% | 2789 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,261 psi | 60% | 2589 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 41,713 psi | 65% | 2694 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 40,103 psi | 63% | 2651 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 33,765 psi | 53% | 2552 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,888 psi | 69% | 2720 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,778 psi | 80% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,290 psi | 60% | 2582 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,434 psi | 57% | 2579 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,909 psi | 52% | 2493 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,660 psi | 45% | 2395 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,926 psi | 56% | 2628 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,156 psi | 83% | 2844 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 36,289 psi | 57% | 2575 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 38,870 psi | 61% | 2667 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 36,434 psi | 57% | 2579 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 48,472 psi | 76% | 2717 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,363 psi | 60% | 2618 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 47,529 psi | 74% | 2766 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,009 psi | 78% | 2779 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 44,541 psi | 70% | 2700 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,714 psi | 69% | 2684 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,394 psi | 65% | 2605 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,260 psi | 57% | 2654 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 47,036 psi | 74% | 2789 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 44% | 1608 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,048 psi | 69% | 2651 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,864 psi | 78% | 2743 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 43,613 psi | 68% | 2661 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,352 psi | 68% | 2641 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 40,089 psi | 63% | 2671 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,572 psi | 75% | 2694 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,847 psi | 72% | 2684 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 29,515 psi | 46% | 2339 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,888 psi | 69% | 2684 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 34,345 psi | 54% | 2595 fps | 95.7% |
| Norma MRP | 59.4 gr | 80% | 35,708 psi | 56% | 2592 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 45,034 psi | 71% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,827 psi | 62% | 2677 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 43,729 psi | 69% | 2697 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 35,433 psi | 56% | 2552 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,355 psi | 44% | 1644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,730 psi | 72% | 2736 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,961 psi | 69% | 2749 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,112 psi | 52% | 2566 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,963 psi | 72% | 2848 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 52,939 psi | 83% | 2779 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,668 psi | 62% | 2569 fps | 95% |
| Rottweil R 905 | <<locked>> | 80% | 37,681 psi | 59% | 2572 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 48,472 psi | 76% | 2717 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,572 psi | 75% | 2694 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,847 psi | 72% | 2684 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,794 psi | 83% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,427 psi | 73% | 2641 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,347 psi | 59% | 2566 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 52,750 psi | 83% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,004 psi | 67% | 2615 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 42,032 psi | 66% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,145 psi | 60% | 2552 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 50,430 psi | 79% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,412 psi | 73% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,317 psi | 55% | 2480 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 45,716 psi | 72% | 2700 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,927 psi | 58% | 2569 fps | 99.5% |
| Vihtavuori N560 | 63.8 gr | 86% | 44,150 psi | 69% | 2766 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 90% | 41,162 psi | 65% | 2690 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 47,297 psi | 74% | 2858 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,382 psi | 71% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,529 psi | 74% | 2766 fps | 99.3% |
| Winchester StaBALL HD | 58.7 gr | 80% | 29,124 psi | 46% | 2500 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,217 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 75 powders for 7 mm Weath. Mag. loaded with the .284 | 160gr | Sierra Tipped MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 3,048 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,048 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 1:10.0 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 | Sierra Tipped MatchKing 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.