Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 164gr | Apex Outdoors Afterburner bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Accurate High Country.
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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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>> | 96% | 57,493 psi | 90% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,332 psi | 87% | 2818 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,868 psi | 86% | 2927 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 94% | 55,593 psi | 87% | 2927 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 56,289 psi | 88% | 2772 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,709 psi | 87% | 2867 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 96% | 57,000 psi | 89% | 2927 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,979 psi | 75% | 2766 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,815 psi | 67% | 2733 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,825 psi | 87% | 2864 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,682 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,796 psi | 87% | 2867 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,000 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,201 psi | 87% | 2854 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,942 psi | 89% | 2923 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,433 psi | 85% | 2844 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,519 psi | 84% | 2897 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,781 psi | 86% | 2933 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,317 psi | 87% | 2828 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 55,825 psi | 87% | 2907 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,763 psi | 78% | 2838 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 56,942 psi | 89% | 2923 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 57,595 psi | 90% | 2812 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2851 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 56,768 psi | 89% | 2867 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,956 psi | 88% | 2825 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 57,188 psi | 90% | 2867 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,811 psi | 87% | 2848 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,173 psi | 88% | 2792 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,663 psi | 83% | 2969 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 57,232 psi | 90% | 2907 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,521 psi | 87% | 2799 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,579 psi | 87% | 2785 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 55,666 psi | 87% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,679 psi | 86% | 2795 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 96% | 54,853 psi | 86% | 2907 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 56,159 psi | 88% | 2782 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,534 psi | 85% | 2782 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,536 psi | 89% | 2854 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 38,493 psi | 60% | 2664 fps | 97.4% |
| Norma MRP | <<locked>> | 94% | 56,797 psi | 89% | 2946 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,145 psi | 90% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,317 psi | 87% | 2923 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 56,014 psi | 88% | 2858 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2920 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 59% | 1791 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,492 psi | 89% | 2871 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,201 psi | 87% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,985 psi | 89% | 2920 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2963 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,066 psi | 75% | 2844 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 82% | 55,608 psi | 87% | 2766 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,869 psi | 89% | 2835 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 54,868 psi | 86% | 2848 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 57,595 psi | 90% | 2812 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,159 psi | 88% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,534 psi | 85% | 2782 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,826 psi | 89% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,361 psi | 87% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,492 psi | 87% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,433 psi | 85% | 2841 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 55,201 psi | 87% | 2759 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,969 psi | 86% | 2776 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 57,609 psi | 90% | 2854 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,419 psi | 87% | 2822 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 56,275 psi | 88% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,376 psi | 87% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,766 psi | 86% | 2799 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,766 psi | 86% | 2799 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,898 psi | 89% | 2871 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,666 psi | 89% | 2943 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2920 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2854 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,723 psi | 86% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,029 psi | 89% | 2871 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,390 psi | 87% | 2979 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,143 psi | 86% | 2815 fps | 99.3% |
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% | 34,127 psi | 53% | 2418 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 45,440 psi | 71% | 2661 fps | 100% |
| Accurate High Country | 58.8 gr | 84% | 41,800 psi | 66% | 2687 fps | 95.9% |
| Accurate MAGPRO | 62.8 gr | 88% | 45,382 psi | 71% | 2746 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 52,997 psi | 83% | 2723 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,782 psi | 59% | 2533 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 40,988 psi | 64% | 2631 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 96% | 42,047 psi | 66% | 2648 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 92% | 33,373 psi | 52% | 2500 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,159 psi | 60% | 2533 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,317 psi | 85% | 2746 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,250 psi | 68% | 2661 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,690 psi | 78% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,811 psi | 59% | 2530 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,969 psi | 56% | 2526 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,503 psi | 51% | 2441 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,529 psi | 45% | 2349 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,288 psi | 55% | 2572 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,112 psi | 82% | 2772 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 38,174 psi | 60% | 2579 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 38,145 psi | 60% | 2612 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 35,969 psi | 56% | 2526 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 48,037 psi | 75% | 2657 fps | 99% |
| Hodgdon H1000 | <<locked>> | 92% | 40,335 psi | 63% | 2615 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 46,775 psi | 73% | 2703 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 49,342 psi | 77% | 2717 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 43,787 psi | 69% | 2638 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,931 psi | 67% | 2621 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,843 psi | 64% | 2549 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,824 psi | 56% | 2598 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 46,006 psi | 72% | 2723 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 44% | 1568 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,468 psi | 68% | 2592 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,124 psi | 77% | 2680 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 43,062 psi | 67% | 2605 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,656 psi | 67% | 2579 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 42,148 psi | 66% | 2671 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 46,992 psi | 74% | 2635 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 45,382 psi | 71% | 2628 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 29,588 psi | 46% | 2303 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 43,250 psi | 68% | 2625 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 33,808 psi | 53% | 2543 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 35,114 psi | 55% | 2536 fps | 96.4% |
| Norma URP | <<locked>> | 80% | 44,396 psi | 70% | 2644 fps | 99.9% |
| Ramshot Grand | 59.7 gr | 86% | 39,102 psi | 61% | 2615 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 43,091 psi | 68% | 2638 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 34,983 psi | 55% | 2500 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 45% | 1601 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,663 psi | 83% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,962 psi | 70% | 2674 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,192 psi | 68% | 2694 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,721 psi | 51% | 2510 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,599 psi | 70% | 2776 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 52,301 psi | 82% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,626 psi | 65% | 2566 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 37,159 psi | 58% | 2513 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,037 psi | 75% | 2657 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,992 psi | 74% | 2635 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 45,382 psi | 71% | 2628 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,229 psi | 83% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,301 psi | 82% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,006 psi | 72% | 2585 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,883 psi | 58% | 2510 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 51,982 psi | 81% | 2710 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,453 psi | 67% | 2556 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 41,336 psi | 65% | 2605 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,884 psi | 59% | 2503 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 49,792 psi | 78% | 2638 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,803 psi | 72% | 2638 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,882 psi | 55% | 2428 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 45,092 psi | 71% | 2641 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,477 psi | 57% | 2516 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 86% | 43,250 psi | 68% | 2703 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 92% | 43,294 psi | 68% | 2690 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 98% | 46,122 psi | 72% | 2792 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,701 psi | 70% | 2602 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,775 psi | 73% | 2703 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,964 psi | 45% | 2457 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,840 psi | 58% | 2480 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 79 powders for 7 mm Weath. Mag. loaded with the .284 | 164gr | Apex Outdoors Afterburner. Winchester StaBALL HD delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,979 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 58–90 %, leaving at least 10 % headroom. The 164.0 gr projectile in 0.284" calls for a 1:7.5 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. Accurate MAGPRO, Ramshot Grand, Accurate High Country rank at the top here: for 7 mm Weath. Mag. with the .284 | 164gr | Apex Outdoors Afterburner 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.