Load Specifications
Load data in caliber 7 mm WSM with .284 | 139gr | Hornady InterLock FP 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% | 56,391 psi | 88% | 2989 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 55,898 psi | 88% | 3048 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 56,202 psi | 88% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,682 psi | 90% | 3097 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,114 psi | 85% | 3127 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 84% | 55,680 psi | 87% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,534 psi | 85% | 3081 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 98% | 55,999 psi | 88% | 3136 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2831 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,855 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,072 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,563 psi | 86% | 3097 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,796 psi | 87% | 3114 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,667 psi | 90% | 3127 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,477 psi | 87% | 3130 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 3110 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,704 psi | 76% | 3045 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,000 psi | 89% | 3209 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3110 fps | 98.3% |
| Bofors RP3 | <<locked>> | 82% | 54,273 psi | 85% | 2995 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,477 psi | 87% | 3130 fps | 98.6% |
| Bofors RP7 | <<locked>> | 88% | 57,043 psi | 89% | 3038 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,240 psi | 76% | 2982 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 82% | 54,389 psi | 85% | 3009 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,811 psi | 87% | 3091 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 55,201 psi | 87% | 3045 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 96% | 56,144 psi | 88% | 3077 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,071 psi | 86% | 3058 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,042 psi | 86% | 3015 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,747 psi | 75% | 3087 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 56,333 psi | 88% | 3127 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1916 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,347 psi | 87% | 2989 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,508 psi | 90% | 3025 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 54,766 psi | 86% | 3018 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,114 psi | 86% | 3009 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 54,157 psi | 85% | 3025 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,566 psi | 90% | 3064 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3173 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 55,622 psi | 87% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,492 psi | 87% | 3009 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,014 psi | 89% | 3054 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 2943 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 56,420 psi | 88% | 3038 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,796 psi | 87% | 3074 fps | 98.3% |
| Norma MRP | <<locked>> | 96% | 55,245 psi | 87% | 3159 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 56,072 psi | 88% | 3074 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,377 psi | 90% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,157 psi | 85% | 3127 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 90% | 54,940 psi | 86% | 3077 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,185 psi | 82% | 3058 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1965 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,259 psi | 85% | 2995 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,158 psi | 86% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,464 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,724 psi | 87% | 3143 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,022 psi | 75% | 3084 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 57,508 psi | 90% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,360 psi | 85% | 2989 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,275 psi | 88% | 3051 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 96% | 57,087 psi | 89% | 3114 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 57,043 psi | 89% | 3038 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,492 psi | 87% | 3009 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,622 psi | 87% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,014 psi | 89% | 3054 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,912 psi | 88% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,853 psi | 86% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,969 psi | 86% | 2956 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,681 psi | 89% | 3110 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 54,331 psi | 85% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,433 psi | 85% | 2986 fps | 96.5% |
| Somchem S365 | <<locked>> | 92% | 55,782 psi | 87% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,041 psi | 85% | 3028 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 86% | 55,724 psi | 87% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,273 psi | 85% | 3009 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,261 psi | 90% | 3064 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 56,202 psi | 88% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,305 psi | 90% | 3074 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,114 psi | 86% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,288 psi | 87% | 3146 fps | 97% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,937 psi | 80% | 3048 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,696 psi | 90% | 3028 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,811 psi | 87% | 3091 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,634 psi | 82% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,099 psi | 85% | 3022 fps | 98.2% |
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% | 52,779 psi | 83% | 2930 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 34,650 psi | 54% | 2631 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 52,750 psi | 83% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,756 psi | 64% | 2792 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 50,415 psi | 79% | 3058 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,342 psi | 77% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,989 psi | 66% | 2835 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 48,863 psi | 77% | 3002 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 98% | 36,289 psi | 57% | 2762 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,125 psi | 79% | 2923 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,345 psi | 84% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,421 psi | 62% | 2805 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,005 psi | 71% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,742 psi | 65% | 2825 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,453 psi | 67% | 2884 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,080 psi | 46% | 2543 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,025 psi | 52% | 2674 fps | 95.6% |
| Alliant Reloder-26 | 61.2 gr | 80% | 31,299 psi | 49% | 2661 fps | 95.6% |
| Bofors RP15 | <<locked>> | 92% | 41,872 psi | 66% | 2867 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 50,894 psi | 80% | 2940 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,453 psi | 67% | 2884 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 44,353 psi | 70% | 2805 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 98% | 44,904 psi | 70% | 2913 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 51,010 psi | 80% | 2953 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 42,612 psi | 67% | 2841 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,484 psi | 71% | 2864 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 48,965 psi | 77% | 2949 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,329 psi | 80% | 2992 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,999 psi | 58% | 2687 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,800 psi | 66% | 2949 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 41,626 psi | 65% | 2851 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 43% | 1716 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,924 psi | 81% | 2936 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,056 psi | 85% | 2969 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,827 psi | 62% | 2726 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,774 psi | 72% | 2838 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 39,117 psi | 61% | 2743 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,572 psi | 75% | 2887 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 46,847 psi | 73% | 2976 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 52,257 psi | 82% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,265 psi | 68% | 2785 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 41,481 psi | 65% | 2762 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 33,649 psi | 53% | 2605 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 52,707 psi | 83% | 2982 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,409 psi | 66% | 2818 fps | 95.2% |
| Norma MRP | 63.9 gr | 86% | 38,812 psi | 61% | 2828 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 40,306 psi | 63% | 2782 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 53,679 psi | 84% | 3009 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,731 psi | 73% | 2986 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 39,218 psi | 61% | 2772 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 38,841 psi | 61% | 2789 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 44% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,749 psi | 80% | 2933 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,776 psi | 75% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,741 psi | 64% | 2812 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,276 psi | 62% | 2822 fps | 98.3% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,711 psi | 61% | 2864 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 53,983 psi | 85% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,790 psi | 75% | 2881 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,470 psi | 73% | 2874 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 41,046 psi | 64% | 2808 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 44,353 psi | 70% | 2805 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,265 psi | 68% | 2785 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 52,257 psi | 82% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,481 psi | 65% | 2762 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,052 psi | 77% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,675 psi | 76% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,438 psi | 67% | 2726 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,669 psi | 64% | 2805 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 47,877 psi | 75% | 2877 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,720 psi | 79% | 2920 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,927 psi | 58% | 2740 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 38,899 psi | 61% | 2730 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 45,759 psi | 72% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,684 psi | 65% | 2782 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 41,118 psi | 64% | 2772 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 52,881 psi | 83% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,278 psi | 65% | 2785 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 32,372 psi | 51% | 2625 fps | 97.2% |
| Vihtavuori N560 | 68.3 gr | 92% | 48,080 psi | 75% | 3012 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 98% | 47,703 psi | 75% | 2989 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,872 psi | 64% | 2749 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,786 psi | 67% | 2844 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,759 psi | 40% | 2513 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,973 psi | 64% | 2772 fps | 95% |
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 | 139gr | Hornady InterLock FP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,209 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 139.0 gr projectile in 0.284" calls for a 1:15.5 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 | 139gr | Hornady InterLock FP 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.