Load Specifications
Load data in caliber 7 mm Weath. Mag. with .287 | 160gr | Woodleigh PP SN bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Ramshot Grand, Accurate MAGPRO 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,666 psi | 89% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,201 psi | 85% | 2854 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 54,534 psi | 85% | 2969 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 92% | 55,288 psi | 87% | 2972 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 55,114 psi | 86% | 2913 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 56,536 psi | 89% | 2976 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,633 psi | 79% | 2874 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,252 psi | 71% | 2831 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,100 psi | 86% | 2910 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,246 psi | 88% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,563 psi | 86% | 2900 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,594 psi | 89% | 2972 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,375 psi | 85% | 2890 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,174 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,578 psi | 86% | 2976 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,549 psi | 85% | 2877 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 55,535 psi | 87% | 2953 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,156 psi | 83% | 2946 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 56,594 psi | 89% | 2972 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 56,434 psi | 88% | 2858 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2966 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,767 psi | 87% | 2907 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,766 psi | 86% | 2864 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 56,507 psi | 89% | 2913 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,245 psi | 87% | 2894 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,564 psi | 87% | 2838 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,347 psi | 88% | 2946 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 58% | 1811 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,491 psi | 85% | 2841 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,273 psi | 85% | 2825 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 54,708 psi | 86% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,232 psi | 90% | 2894 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 54,302 psi | 85% | 2949 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,973 psi | 64% | 2733 fps | 96% |
| Lovex S065 | <<locked>> | 84% | 55,114 psi | 86% | 2825 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,753 psi | 89% | 2874 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,360 psi | 85% | 2844 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,434 psi | 87% | 2897 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,973 psi | 64% | 2759 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 56,492 psi | 89% | 2992 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,260 psi | 88% | 2890 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,013 psi | 86% | 2972 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 55,013 psi | 86% | 2897 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 53,388 psi | 84% | 2907 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,130 psi | 60% | 1854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,331 psi | 85% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,420 psi | 88% | 2963 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,014 psi | 89% | 3074 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2959 fps | 97.6% |
| Rottweil R 904 | <<locked>> | 90% | 56,188 psi | 88% | 2884 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 90% | 54,070 psi | 85% | 2890 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 56,434 psi | 88% | 2858 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,114 psi | 86% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,753 psi | 89% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,450 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,317 psi | 85% | 2779 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,406 psi | 90% | 2946 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 57,551 psi | 90% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,667 psi | 90% | 2874 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 56,869 psi | 89% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,549 psi | 85% | 2864 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 55,100 psi | 86% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,389 psi | 85% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,056 psi | 85% | 2841 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 57,305 psi | 90% | 2890 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,565 psi | 89% | 2917 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,260 psi | 88% | 2989 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 98% | 56,144 psi | 88% | 2966 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,866 psi | 83% | 2963 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,624 psi | 90% | 2838 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,028 psi | 88% | 2913 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,028 psi | 88% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,375 psi | 85% | 2858 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% | 35,476 psi | 56% | 2493 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 47,384 psi | 74% | 2743 fps | 100% |
| Accurate High Country | 62.7 gr | 82% | 41,249 psi | 65% | 2717 fps | 95.8% |
| Accurate MAGPRO | 67 gr | 86% | 44,875 psi | 70% | 2782 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 39,450 psi | 62% | 2618 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 40,306 psi | 63% | 2667 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 94% | 41,510 psi | 65% | 2690 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 90% | 32,808 psi | 51% | 2530 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,368 psi | 71% | 2749 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,518 psi | 82% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,479 psi | 62% | 2615 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,811 psi | 59% | 2615 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,997 psi | 53% | 2520 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,617 psi | 46% | 2428 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,405 psi | 59% | 2661 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,169 psi | 80% | 2818 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 37,652 psi | 59% | 2608 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 37,811 psi | 59% | 2644 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 37,811 psi | 59% | 2615 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 49,748 psi | 78% | 2746 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 88% | 37,144 psi | 58% | 2592 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 48,892 psi | 77% | 2792 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 51,314 psi | 80% | 2808 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 43,033 psi | 67% | 2674 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,235 psi | 66% | 2657 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,801 psi | 67% | 2635 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 35,157 psi | 55% | 2628 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 48,704 psi | 76% | 2822 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,266 psi | 71% | 2680 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,140 psi | 80% | 2772 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,991 psi | 71% | 2690 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,800 psi | 66% | 2615 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 86% | 41,553 psi | 65% | 2707 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,218 psi | 60% | 2671 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 48,660 psi | 76% | 2720 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 47,152 psi | 74% | 2713 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,560 psi | 48% | 2369 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 45,310 psi | 71% | 2717 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 33,547 psi | 53% | 2575 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 36,898 psi | 58% | 2621 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 46,441 psi | 73% | 2733 fps | 100% |
| Ramshot Grand | 63.7 gr | 84% | 38,493 psi | 60% | 2651 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 45,179 psi | 71% | 2726 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 34,243 psi | 54% | 2526 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 45% | 1657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,311 psi | 74% | 2766 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,411 psi | 71% | 2782 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,010 psi | 50% | 2533 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,628 psi | 70% | 2822 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 40,814 psi | 64% | 2602 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 38,740 psi | 61% | 2598 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 49,748 psi | 78% | 2746 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,660 psi | 76% | 2720 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 47,152 psi | 74% | 2713 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,027 psi | 85% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,601 psi | 75% | 2667 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,421 psi | 60% | 2592 fps | 96.2% |
| Somchem S355 | <<locked>> | 80% | 53,954 psi | 85% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,367 psi | 70% | 2648 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 43,526 psi | 68% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,349 psi | 62% | 2582 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 51,808 psi | 81% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,776 psi | 75% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,171 psi | 54% | 2457 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 47,181 psi | 74% | 2730 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,130 psi | 60% | 2595 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 42,685 psi | 67% | 2736 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 40,045 psi | 63% | 2664 fps | 95% |
| Vihtavuori N568 | <<locked>> | 96% | 46,035 psi | 72% | 2838 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,978 psi | 74% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,081 psi | 77% | 2799 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,269 psi | 47% | 2536 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,911 psi | 56% | 2503 fps | 95.1% |
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 74 powders for 7 mm Weath. Mag. loaded with the .287 | 160gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 3,077 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,077 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 0.287" calls for a 1:12.0 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. Ramshot Grand, Accurate MAGPRO, Accurate High Country rank at the top here: for 7 mm Weath. Mag. with the .287 | 160gr | Woodleigh PP SN 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.