Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 157gr | CutEdge MTAC bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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>> | 96% | 55,288 psi | 87% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,014 psi | 89% | 2920 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 57,130 psi | 90% | 3038 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 54,186 psi | 85% | 2979 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 55,042 psi | 86% | 2835 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,215 psi | 85% | 2920 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 55,593 psi | 87% | 2979 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,528 psi | 73% | 2812 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,104 psi | 64% | 2762 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,043 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,491 psi | 85% | 2927 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,608 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,421 psi | 90% | 2969 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,332 psi | 87% | 2976 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,405 psi | 88% | 2946 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,996 psi | 81% | 2949 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,159 psi | 90% | 3041 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,447 psi | 85% | 2959 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 57,072 psi | 89% | 2871 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,921 psi | 75% | 2877 fps | 97.7% |
| Bofors RP5 | <<locked>> | 96% | 55,332 psi | 87% | 2976 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 56,231 psi | 88% | 2871 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,242 psi | 80% | 2904 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 82% | 57,130 psi | 90% | 2890 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,361 psi | 87% | 2923 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,462 psi | 85% | 2881 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 55,840 psi | 88% | 2923 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,534 psi | 85% | 2900 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,578 psi | 86% | 2848 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,995 psi | 80% | 3012 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 86% | 55,825 psi | 87% | 2963 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1808 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,609 psi | 90% | 2910 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,375 psi | 85% | 2841 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 57,406 psi | 90% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,768 psi | 89% | 2904 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 98% | 57,188 psi | 90% | 3015 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 54,694 psi | 86% | 2838 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,159 psi | 88% | 2887 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 2841 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 55,056 psi | 86% | 2910 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 36,564 psi | 57% | 2680 fps | 96.4% |
| Norma MRP | <<locked>> | 94% | 55,303 psi | 87% | 2999 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 55,521 psi | 87% | 2904 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,085 psi | 85% | 2976 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 54,389 psi | 85% | 2910 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,159 psi | 88% | 2969 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,681 psi | 59% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,985 psi | 89% | 2881 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,013 psi | 86% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,000 psi | 89% | 2946 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,506 psi | 87% | 2976 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3009 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 57,203 psi | 90% | 2867 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,695 psi | 87% | 2894 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 56,840 psi | 89% | 2956 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 56,231 psi | 88% | 2871 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,694 psi | 86% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,159 psi | 88% | 2887 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,216 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,580 psi | 90% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,508 psi | 90% | 2844 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,391 psi | 88% | 2949 fps | 99.4% |
| Somchem S355 | <<locked>> | 84% | 57,029 psi | 89% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,261 psi | 90% | 2884 fps | 98.1% |
| Somchem S365 | <<locked>> | 90% | 55,593 psi | 87% | 2907 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,261 psi | 90% | 2927 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 54,650 psi | 86% | 2785 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,508 psi | 90% | 2900 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,840 psi | 89% | 2907 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 56,449 psi | 88% | 2900 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,955 psi | 86% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,259 psi | 87% | 2995 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 2966 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,174 psi | 90% | 2858 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,361 psi | 87% | 2923 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,737 psi | 84% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,696 psi | 90% | 2927 fps | 99.4% |
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% | 31,792 psi | 50% | 2428 fps | 96% |
| Accurate 4350 | <<locked>> | 80% | 43,207 psi | 68% | 2697 fps | 99.8% |
| Accurate High Country | <<locked>> | 86% | 42,946 psi | 67% | 2779 fps | 95.9% |
| Accurate MAGPRO | 67.3 gr | 90% | 46,876 psi | 73% | 2844 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,605 psi | 81% | 2782 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,827 psi | 61% | 2625 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 88% | 42,438 psi | 67% | 2733 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 96% | 40,582 psi | 64% | 2687 fps | 95% |
| ADI AR 2225 | <<locked>> | 94% | 33,765 psi | 53% | 2575 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,533 psi | 82% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,669 psi | 65% | 2703 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,037 psi | 75% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,740 psi | 61% | 2618 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 84% | 36,666 psi | 57% | 2612 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,603 psi | 48% | 2457 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,458 psi | 48% | 2474 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,330 psi | 52% | 2589 fps | 98% |
| Bofors RP15 | <<locked>> | 88% | 38,928 psi | 61% | 2661 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 53,403 psi | 84% | 2818 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 38,914 psi | 61% | 2694 fps | 95% |
| Bofors RP5 | <<locked>> | 84% | 36,666 psi | 57% | 2612 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 46,325 psi | 73% | 2703 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 92% | 38,754 psi | 61% | 2648 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 53,548 psi | 84% | 2838 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,034 psi | 71% | 2746 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 47,877 psi | 75% | 2766 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 45,426 psi | 71% | 2740 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,541 psi | 70% | 2723 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,102 psi | 61% | 2589 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,347 psi | 57% | 2680 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 44,498 psi | 70% | 2769 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 43% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,032 psi | 66% | 2635 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,892 psi | 75% | 2733 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 41,220 psi | 65% | 2641 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,005 psi | 69% | 2677 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 90% | 43,511 psi | 68% | 2769 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 45,165 psi | 71% | 2677 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 43,424 psi | 68% | 2664 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 31,183 psi | 49% | 2411 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 41,756 psi | 65% | 2667 fps | 96.4% |
| Norma 217 | <<locked>> | 98% | 34,142 psi | 54% | 2615 fps | 95.2% |
| Norma MRP | 58.7 gr | 80% | 33,315 psi | 52% | 2552 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 42,511 psi | 67% | 2684 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 40,161 psi | 63% | 2707 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 41,495 psi | 65% | 2677 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 35,650 psi | 56% | 2582 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,050 psi | 44% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,272 psi | 83% | 2825 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,082 psi | 80% | 2871 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,033 psi | 67% | 2713 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,495 psi | 65% | 2730 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,199 psi | 52% | 2589 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,111 psi | 79% | 2766 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,844 psi | 67% | 2661 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 82% | 37,811 psi | 59% | 2598 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,325 psi | 73% | 2703 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,165 psi | 71% | 2677 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 43,424 psi | 68% | 2664 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,764 psi | 81% | 2825 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,749 psi | 80% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,295 psi | 69% | 2628 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,478 psi | 59% | 2592 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,111 psi | 79% | 2759 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,700 psi | 68% | 2651 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 39,479 psi | 62% | 2641 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,940 psi | 56% | 2530 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 47,935 psi | 75% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,164 psi | 69% | 2684 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,578 psi | 56% | 2513 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,424 psi | 68% | 2684 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 34,403 psi | 54% | 2536 fps | 98.9% |
| Vihtavuori N560 | 64.6 gr | 88% | 44,715 psi | 70% | 2802 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 92% | 41,408 psi | 65% | 2720 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,091 psi | 68% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,237 psi | 71% | 2749 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,064 psi | 42% | 2454 fps | 98.7% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,637 psi | 59% | 2566 fps | 95.3% |
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 78 powders for 7 mm Weath. Mag. loaded with the .284 | 157gr | CutEdge MTAC. Alliant Reloder-26 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,041 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 157.0 gr projectile in 0.284" calls for a 1:9.0 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for 7 mm Weath. Mag. with the .284 | 157gr | CutEdge MTAC 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.