Load Specifications
Bullet:.284 | 120gr | Barnes Solid
Bullet Manufacturer:Barnes
Bullet Weight:120 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.1 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:10.0
Load data in caliber 7 mm WSM with .284 | 120gr | Barnes Solid bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Hodgdon Superformance.
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 2015 | <<locked>> | 82% | 57,479 psi | 90% | 3107 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,203 psi | 90% | 3136 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,492 psi | 87% | 3136 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,486 psi | 76% | 3094 fps | 97.7% |
| Accurate 4064 | <<locked>> | 88% | 57,609 psi | 90% | 3196 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,476 psi | 85% | 3235 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 56,971 psi | 89% | 3228 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,534 psi | 85% | 3169 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 3264 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,550 psi | 87% | 3169 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,058 psi | 89% | 3140 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,421 psi | 90% | 3363 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,666 psi | 87% | 3261 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,114 psi | 86% | 3196 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,405 psi | 87% | 3219 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,100 psi | 86% | 3294 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,811 psi | 89% | 3333 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,839 psi | 86% | 3251 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 3120 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 3320 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,855 psi | 89% | 3235 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 55,927 psi | 88% | 3212 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,550 psi | 87% | 3182 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,000 psi | 89% | 3146 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,477 psi | 87% | 3196 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,463 psi | 88% | 3225 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 56,840 psi | 89% | 3287 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 92% | 56,913 psi | 89% | 3245 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 84% | 57,638 psi | 90% | 3238 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,332 psi | 87% | 3212 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,740 psi | 90% | 3274 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,508 psi | 90% | 3327 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 56% | 2018 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,114 psi | 86% | 3182 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,389 psi | 85% | 3163 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,464 psi | 90% | 3209 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,087 psi | 89% | 3186 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 56,362 psi | 88% | 3212 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,305 psi | 90% | 3215 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 54,911 psi | 86% | 3225 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 56,855 psi | 89% | 3251 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,550 psi | 87% | 3169 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,305 psi | 90% | 3199 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,767 psi | 87% | 3143 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,435 psi | 90% | 3202 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,087 psi | 89% | 3209 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 54,868 psi | 86% | 3189 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 55,506 psi | 87% | 3163 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,130 psi | 88% | 3163 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,694 psi | 86% | 3202 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,159 psi | 90% | 3264 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 51,314 psi | 80% | 3268 fps | 97.4% |
| Norma URP | <<locked>> | 96% | 56,768 psi | 89% | 3274 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 55,564 psi | 87% | 3228 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,651 psi | 87% | 3271 fps | 98.9% |
| Ramshot TAC | <<locked>> | 82% | 55,782 psi | 87% | 3186 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,840 psi | 88% | 3209 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 57% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,550 psi | 89% | 3202 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,202 psi | 88% | 3291 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,057 psi | 88% | 3323 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,259 psi | 85% | 3255 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,971 psi | 89% | 3346 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 56,449 psi | 88% | 3146 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,101 psi | 88% | 3163 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,796 psi | 87% | 3205 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,896 psi | 84% | 3235 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 92% | 55,550 psi | 87% | 3182 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,087 psi | 89% | 3209 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,305 psi | 90% | 3199 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,435 psi | 90% | 3202 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,868 psi | 86% | 3189 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,725 psi | 90% | 3271 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,520 psi | 85% | 3163 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,376 psi | 87% | 3189 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,608 psi | 89% | 3097 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,363 psi | 90% | 3094 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,217 psi | 90% | 3156 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 3228 fps | 96.4% |
| Somchem S335 | <<locked>> | 84% | 56,144 psi | 88% | 3091 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,215 psi | 85% | 3153 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 55,999 psi | 88% | 3202 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,608 psi | 87% | 3278 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,607 psi | 86% | 3209 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 84% | 57,014 psi | 89% | 3077 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,347 psi | 88% | 3127 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,913 psi | 89% | 3140 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,537 psi | 90% | 3176 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,637 psi | 87% | 3215 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 56,028 psi | 88% | 3166 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,187 psi | 86% | 3133 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,549 psi | 85% | 3212 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 3212 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,622 psi | 87% | 3182 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,623 psi | 89% | 3222 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,130 psi | 90% | 3291 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,118 psi | 64% | 3153 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,434 psi | 87% | 3199 fps | 100% |
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 2015 | <<locked>> | 80% | 53,954 psi | 85% | 3058 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,094 psi | 74% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,498 psi | 71% | 2949 fps | 95% |
| Accurate 3100 | <<locked>> | 94% | 39,421 psi | 62% | 2907 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 44,570 psi | 70% | 2979 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,737 psi | 56% | 2844 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 50,183 psi | 79% | 3110 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 42,525 psi | 67% | 2936 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 52,272 psi | 82% | 3202 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,228 psi | 82% | 3114 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,447 psi | 84% | 3087 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,398 psi | 73% | 3156 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,243 psi | 82% | 3199 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,670 psi | 67% | 2966 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,730 psi | 72% | 3038 fps | 99% |
| Alliant Reloder-16 | 53.7 gr | 82% | 35,317 psi | 55% | 2858 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,246 psi | 58% | 2936 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,488 psi | 81% | 3189 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,096 psi | 49% | 2756 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 36,143 psi | 57% | 2953 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,864 psi | 78% | 3114 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 42,627 psi | 67% | 2969 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 45,876 psi | 72% | 2995 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,432 psi | 84% | 3091 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,909 psi | 81% | 3140 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,236 psi | 68% | 2972 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 43,482 psi | 68% | 3028 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 50,067 psi | 78% | 3117 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 50,691 psi | 79% | 3120 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,530 psi | 48% | 2684 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,137 psi | 74% | 3091 fps | 99.9% |
| Hodgdon Superformance | 65.6 gr | 88% | 46,282 psi | 73% | 3114 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 42% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,443 psi | 76% | 3061 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 50,923 psi | 80% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,701 psi | 70% | 2976 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,108 psi | 74% | 2999 fps | 96.3% |
| IMR 4350 | <<locked>> | 90% | 46,644 psi | 73% | 3031 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,759 psi | 70% | 2976 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 34,418 psi | 54% | 2795 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,905 psi | 74% | 3071 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 52,228 psi | 82% | 3114 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,024 psi | 78% | 3081 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,414 psi | 77% | 3031 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,817 psi | 70% | 2979 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 39,320 psi | 62% | 2858 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 42,627 psi | 67% | 2949 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,994 psi | 77% | 3051 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,501 psi | 78% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,107 psi | 71% | 3025 fps | 99.2% |
| Norma 204 | <<locked>> | 92% | 49,734 psi | 78% | 3130 fps | 95% |
| Norma MRP | <<locked>> | 96% | 44,599 psi | 70% | 3127 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 35,766 psi | 56% | 2844 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 45,165 psi | 71% | 3041 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 39,813 psi | 62% | 2949 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 52,301 psi | 82% | 3123 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,040 psi | 82% | 3143 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 43% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,439 psi | 68% | 2953 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,863 psi | 77% | 3159 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,581 psi | 62% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,404 psi | 55% | 2858 fps | 95.2% |
| ReloadSwiss RS 70 | 60.1 gr | 84% | 37,434 psi | 59% | 2930 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 53,084 psi | 83% | 3094 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,528 psi | 73% | 2995 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 40,219 psi | 63% | 2910 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 50,459 psi | 79% | 3169 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 86% | 45,876 psi | 72% | 2995 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 39,320 psi | 62% | 2858 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,024 psi | 78% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,817 psi | 70% | 2979 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 42,627 psi | 67% | 2949 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,176 psi | 65% | 2959 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,966 psi | 80% | 3100 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,559 psi | 76% | 3071 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,835 psi | 78% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,872 psi | 66% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,990 psi | 69% | 2917 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,980 psi | 78% | 3163 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 49,748 psi | 78% | 2989 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,705 psi | 79% | 3094 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,727 psi | 64% | 2913 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 30,052 psi | 47% | 2726 fps | 97% |
| Somchem S385 | <<locked>> | 94% | 44,904 psi | 70% | 3022 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 50,314 psi | 79% | 2976 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,427 psi | 73% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,978 psi | 74% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,870 psi | 61% | 2841 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 34,853 psi | 55% | 2785 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 52,344 psi | 82% | 3107 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,295 psi | 71% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,753 psi | 58% | 2848 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 34,055 psi | 53% | 2841 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,476 psi | 54% | 2759 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 52,939 psi | 83% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,700 psi | 68% | 3031 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,472 psi | 46% | 2782 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,472 psi | 76% | 3077 fps | 99.8% |
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 98 powders for 7 mm WSM loaded with the .284 | 120gr | Barnes Solid. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,363 fps; across all powders the maximum-charge window runs from 2,018 fps to 3,363 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. Alliant Reloder-16, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for 7 mm WSM with the .284 | 120gr | Barnes Solid 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.