Load Specifications
Load data in caliber 7 mm WSM with .284 | 160gr | Speer Grand Slam bullet and 75 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.
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>> | 96% | 56,057 psi | 88% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,551 psi | 90% | 2890 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,534 psi | 85% | 2949 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 55,347 psi | 87% | 2802 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,549 psi | 85% | 2890 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 55,970 psi | 88% | 2949 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,847 psi | 73% | 2785 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,640 psi | 65% | 2743 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,536 psi | 89% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,824 psi | 86% | 2894 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,840 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,667 psi | 90% | 2933 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,782 psi | 87% | 2946 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,782 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,576 psi | 82% | 2923 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,580 psi | 90% | 3015 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,665 psi | 86% | 2927 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,341 psi | 76% | 2854 fps | 97.9% |
| Bofors RP5 | <<locked>> | 96% | 55,782 psi | 87% | 2946 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 56,637 psi | 89% | 2841 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2874 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 86% | 55,637 psi | 87% | 2894 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,781 psi | 86% | 2848 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 56,159 psi | 88% | 2890 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,853 psi | 86% | 2871 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,071 psi | 86% | 2818 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,387 psi | 81% | 2982 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 56,173 psi | 88% | 2933 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 58% | 1781 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,534 psi | 85% | 2825 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,563 psi | 86% | 2808 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 54,418 psi | 85% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,217 psi | 90% | 2874 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 98% | 57,609 psi | 90% | 2989 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 55,143 psi | 86% | 2808 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,753 psi | 89% | 2858 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2818 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,405 psi | 87% | 2881 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 37,159 psi | 58% | 2664 fps | 96.8% |
| Norma MRP | <<locked>> | 94% | 55,535 psi | 87% | 2969 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 56,028 psi | 88% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,346 psi | 85% | 2946 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 54,839 psi | 86% | 2881 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,521 psi | 89% | 2943 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,681 psi | 59% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,392 psi | 90% | 2848 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,405 psi | 87% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,580 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,985 psi | 88% | 2946 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,793 psi | 81% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 54,259 psi | 85% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,043 psi | 88% | 2861 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 94% | 57,406 psi | 90% | 2927 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 56,637 psi | 89% | 2841 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,143 psi | 86% | 2808 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,753 psi | 89% | 2858 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,796 psi | 87% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,433 psi | 85% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,447 psi | 85% | 2762 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,942 psi | 89% | 2923 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 57,653 psi | 90% | 2835 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,925 psi | 85% | 2799 fps | 97.6% |
| Somchem S365 | <<locked>> | 90% | 56,289 psi | 88% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,711 psi | 90% | 2897 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,303 psi | 87% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,331 psi | 85% | 2815 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,348 psi | 90% | 2877 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 57,145 psi | 90% | 2877 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,651 psi | 87% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,477 psi | 87% | 2963 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 2940 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,450 psi | 90% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,912 psi | 88% | 2897 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,128 psi | 85% | 3002 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,041 psi | 85% | 2838 fps | 99.1% |
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% | 32,735 psi | 51% | 2421 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 44,005 psi | 69% | 2674 fps | 99.9% |
| Accurate MAGPRO | 65.3 gr | 90% | 47,384 psi | 74% | 2822 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 52,112 psi | 82% | 2753 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,796 psi | 58% | 2546 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 42,815 psi | 67% | 2707 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 41,060 psi | 64% | 2664 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 94% | 34,360 psi | 54% | 2562 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,200 psi | 83% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,221 psi | 66% | 2680 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,646 psi | 76% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,767 psi | 58% | 2539 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,246 psi | 58% | 2595 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,372 psi | 49% | 2451 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,196 psi | 46% | 2405 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,055 psi | 53% | 2579 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 36,941 psi | 58% | 2585 fps | 95.1% |
| Bofors RP30 | <<locked>> | 94% | 39,450 psi | 62% | 2677 fps | 95.4% |
| Bofors RP5 | <<locked>> | 84% | 37,246 psi | 58% | 2595 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 46,992 psi | 74% | 2680 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,378 psi | 62% | 2631 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 45,600 psi | 71% | 2720 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 48,341 psi | 76% | 2740 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 88% | 45,788 psi | 72% | 2717 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,918 psi | 70% | 2697 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,784 psi | 62% | 2569 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,927 psi | 58% | 2664 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 44,889 psi | 70% | 2743 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 43% | 1591 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,467 psi | 67% | 2612 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,225 psi | 76% | 2703 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 41,843 psi | 66% | 2621 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,614 psi | 70% | 2657 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 41,075 psi | 64% | 2684 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,905 psi | 72% | 2654 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,208 psi | 69% | 2644 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 30,052 psi | 47% | 2352 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,351 psi | 66% | 2644 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 34,896 psi | 55% | 2605 fps | 95.8% |
| Norma MRP | 57 gr | 80% | 34,069 psi | 53% | 2546 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,250 psi | 68% | 2661 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 40,727 psi | 64% | 2690 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 42,134 psi | 66% | 2657 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 88% | 36,376 psi | 57% | 2569 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 44% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,867 psi | 84% | 2795 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,634 psi | 81% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,816 psi | 69% | 2694 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,959 psi | 66% | 2707 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,779 psi | 53% | 2575 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 50,981 psi | 80% | 2740 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,785 psi | 64% | 2585 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 36,056 psi | 56% | 2526 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 46,992 psi | 74% | 2680 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,905 psi | 72% | 2654 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,208 psi | 69% | 2644 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,315 psi | 82% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,184 psi | 80% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,889 psi | 70% | 2602 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,116 psi | 60% | 2575 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,836 psi | 80% | 2736 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,367 psi | 70% | 2631 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,103 psi | 63% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,637 psi | 57% | 2513 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,646 psi | 76% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,672 psi | 70% | 2661 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,114 psi | 57% | 2493 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 44,063 psi | 69% | 2661 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,172 psi | 55% | 2523 fps | 99.1% |
| Vihtavuori N560 | 61.2 gr | 86% | 42,090 psi | 66% | 2717 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 42,032 psi | 66% | 2700 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,555 psi | 68% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,832 psi | 72% | 2726 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,862 psi | 44% | 2454 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,247 psi | 60% | 2546 fps | 95.6% |
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 82 powders for 7 mm WSM loaded with the .284 | 160gr | Speer Grand Slam. Alliant Reloder-26 delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,015 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 1:13.0 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 WSM with the .284 | 160gr | Speer Grand Slam they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 7977 Enduron, IMR 8133 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.