Load Specifications
Load data in caliber 7 mm WSM with .284 | 145gr | Speer Boat-Tail bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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 2700 | <<locked>> | 82% | 56,492 psi | 89% | 2930 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 55,550 psi | 87% | 2982 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 56,217 psi | 88% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,450 psi | 90% | 3028 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,983 psi | 85% | 3064 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 55,811 psi | 87% | 2943 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,462 psi | 85% | 3018 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 56,028 psi | 88% | 3077 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,653 psi | 61% | 2779 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,739 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,956 psi | 89% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,476 psi | 85% | 3031 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,825 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,479 psi | 90% | 3061 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,419 psi | 87% | 3071 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 3048 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,472 psi | 76% | 2982 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,623 psi | 89% | 3140 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3051 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 54,201 psi | 85% | 2930 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,419 psi | 87% | 3071 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 56,927 psi | 89% | 2972 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,095 psi | 75% | 2923 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 54,331 psi | 85% | 2946 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,622 psi | 87% | 3025 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 55,100 psi | 86% | 2982 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 56,028 psi | 88% | 3015 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,940 psi | 86% | 2999 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,766 psi | 86% | 2949 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,572 psi | 75% | 3028 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 55,941 psi | 88% | 3061 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 57% | 1867 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,085 psi | 86% | 2923 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,682 psi | 90% | 2963 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 54,766 psi | 86% | 2956 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,911 psi | 86% | 2943 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 54,128 psi | 85% | 2966 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,363 psi | 90% | 3002 fps | 97.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,232 psi | 90% | 3110 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 55,622 psi | 87% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,317 psi | 87% | 2943 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 56,724 psi | 89% | 2989 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2887 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 56,260 psi | 88% | 2972 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,405 psi | 87% | 3009 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 54,969 psi | 86% | 3094 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 55,796 psi | 87% | 3009 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,261 psi | 90% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,012 psi | 85% | 3064 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 90% | 54,607 psi | 86% | 3009 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2999 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,273 psi | 85% | 2933 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,085 psi | 86% | 3038 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,450 psi | 90% | 3054 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,796 psi | 87% | 3081 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,674 psi | 75% | 3022 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 82% | 57,479 psi | 90% | 2930 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,273 psi | 85% | 2927 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,202 psi | 88% | 2989 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 56,898 psi | 89% | 3048 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 56,927 psi | 89% | 2972 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,317 psi | 87% | 2943 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,622 psi | 87% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,724 psi | 89% | 2989 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,028 psi | 88% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,839 psi | 86% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,911 psi | 86% | 2897 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,420 psi | 88% | 3045 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,230 psi | 85% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,099 psi | 85% | 2920 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 55,593 psi | 87% | 3012 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,740 psi | 90% | 3025 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 55,448 psi | 87% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,201 psi | 85% | 2946 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,014 psi | 89% | 2999 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 56,159 psi | 88% | 2894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,174 psi | 90% | 3012 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,085 psi | 86% | 3025 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,071 psi | 86% | 3084 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,836 psi | 80% | 2992 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,566 psi | 90% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,840 psi | 88% | 3028 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,214 psi | 82% | 3123 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,056 psi | 85% | 2963 fps | 98.4% |
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 2700 | <<locked>> | 80% | 52,750 psi | 83% | 2871 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 32,285 psi | 51% | 2520 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 52,692 psi | 83% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,770 psi | 64% | 2736 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 50,183 psi | 79% | 2999 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,269 psi | 77% | 2838 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,843 psi | 66% | 2776 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 45,701 psi | 72% | 2884 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 36,230 psi | 57% | 2713 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,082 psi | 78% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,388 psi | 84% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,378 psi | 62% | 2746 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,947 psi | 70% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,800 psi | 66% | 2772 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,523 psi | 62% | 2762 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,022 psi | 45% | 2493 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,967 psi | 52% | 2621 fps | 96% |
| Alliant Reloder-26 | 59.3 gr | 80% | 31,328 psi | 49% | 2615 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 41,698 psi | 65% | 2812 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 50,720 psi | 79% | 2874 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 39,523 psi | 62% | 2762 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 44,295 psi | 69% | 2746 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 44,889 psi | 70% | 2861 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 50,894 psi | 80% | 2890 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,714 psi | 67% | 2785 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,353 psi | 71% | 2802 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 48,907 psi | 77% | 2890 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,964 psi | 75% | 2874 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,912 psi | 58% | 2631 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,044 psi | 61% | 2825 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 41,611 psi | 65% | 2799 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,499 psi | 43% | 1670 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,851 psi | 81% | 2871 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,114 psi | 85% | 2907 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 39,827 psi | 62% | 2671 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,759 psi | 72% | 2779 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 39,131 psi | 61% | 2687 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,558 psi | 75% | 2831 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 46,601 psi | 73% | 2917 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 52,141 psi | 82% | 2864 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,192 psi | 68% | 2726 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 41,466 psi | 65% | 2707 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 33,591 psi | 53% | 2552 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 52,750 psi | 83% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,221 psi | 66% | 2762 fps | 95.5% |
| Norma MRP | 60.4 gr | 84% | 36,114 psi | 57% | 2710 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 40,292 psi | 63% | 2730 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 53,447 psi | 84% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,468 psi | 68% | 2861 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,117 psi | 61% | 2717 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 38,740 psi | 61% | 2733 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,691 psi | 79% | 2871 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,747 psi | 75% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,669 psi | 64% | 2756 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,102 psi | 61% | 2766 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,926 psi | 56% | 2736 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 53,882 psi | 84% | 2877 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,776 psi | 75% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,340 psi | 73% | 2815 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 40,872 psi | 64% | 2753 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 44,295 psi | 69% | 2746 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,192 psi | 68% | 2726 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 52,141 psi | 82% | 2864 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,466 psi | 65% | 2707 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,936 psi | 77% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,486 psi | 76% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,250 psi | 66% | 2671 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,524 psi | 64% | 2746 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 47,848 psi | 75% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,471 psi | 74% | 2805 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 36,883 psi | 58% | 2684 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,870 psi | 61% | 2677 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 45,730 psi | 72% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,698 psi | 65% | 2726 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,290 psi | 60% | 2657 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 52,707 psi | 83% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,147 psi | 64% | 2726 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 32,300 psi | 51% | 2572 fps | 97.5% |
| Vihtavuori N560 | 66.1 gr | 92% | 47,892 psi | 75% | 2956 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 98% | 47,514 psi | 74% | 2930 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,727 psi | 64% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,714 psi | 67% | 2785 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,701 psi | 40% | 2467 fps | 96.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,814 psi | 64% | 2717 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 91 powders for 7 mm WSM loaded with the .284 | 145gr | Speer Boat-Tail. Alliant Reloder-26 delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,140 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 7 mm WSM with the .284 | 145gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.