Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:125 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 | 125gr | Lehigh Defense Controlled Chaos bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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 2495 | <<locked>> | 84% | 55,288 psi | 87% | 3051 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,971 psi | 89% | 3114 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3081 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 55,521 psi | 87% | 3104 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,420 psi | 88% | 3212 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 54,795 psi | 86% | 3136 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,985 psi | 88% | 3136 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,896 psi | 84% | 3182 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,985 psi | 89% | 3133 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,013 psi | 86% | 3264 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,479 psi | 90% | 3241 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,710 psi | 89% | 3166 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,985 psi | 89% | 3189 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,884 psi | 89% | 3271 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,795 psi | 86% | 3245 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,623 psi | 89% | 3232 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 3159 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,427 psi | 74% | 3107 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,481 psi | 65% | 3002 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,491 psi | 85% | 3310 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,795 psi | 86% | 3146 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 57,725 psi | 90% | 3182 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 3159 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 57,130 psi | 90% | 3156 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,087 psi | 89% | 3163 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,607 psi | 86% | 3140 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 55,143 psi | 86% | 3205 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 55,085 psi | 86% | 3163 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 55,434 psi | 87% | 3146 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,261 psi | 90% | 3186 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,680 psi | 87% | 3182 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,448 psi | 87% | 3238 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 56% | 1982 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,579 psi | 89% | 3150 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,057 psi | 88% | 3130 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,448 psi | 87% | 3120 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,795 psi | 86% | 3097 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 54,317 psi | 85% | 3127 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,361 psi | 87% | 3130 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 56,724 psi | 89% | 3199 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 54,998 psi | 86% | 3166 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,985 psi | 89% | 3133 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,201 psi | 87% | 3107 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,159 psi | 90% | 3110 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,535 psi | 87% | 3117 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,245 psi | 87% | 3127 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 56,478 psi | 89% | 3166 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,858 psi | 66% | 2913 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 56,971 psi | 89% | 3130 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,653 psi | 90% | 3127 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,260 psi | 88% | 3173 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,013 psi | 86% | 3179 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 53,214 psi | 83% | 3251 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 55,056 psi | 86% | 3192 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 57,276 psi | 90% | 3202 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 57,508 psi | 90% | 3248 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 57,232 psi | 90% | 3156 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,392 psi | 90% | 3176 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 58% | 2031 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,433 psi | 85% | 3117 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,128 psi | 85% | 3199 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,099 psi | 85% | 3238 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,246 psi | 88% | 3232 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,926 psi | 86% | 3258 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 57,580 psi | 90% | 3130 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,522 psi | 90% | 3176 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,550 psi | 87% | 3153 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3215 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 57,130 psi | 90% | 3156 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,245 psi | 87% | 3127 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,201 psi | 87% | 3107 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,535 psi | 87% | 3117 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,478 psi | 89% | 3166 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,680 psi | 87% | 3182 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,072 psi | 88% | 3136 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,884 psi | 89% | 3159 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,476 psi | 85% | 3009 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,274 psi | 87% | 3009 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,216 psi | 87% | 3074 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 3209 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 57,537 psi | 90% | 3054 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,753 psi | 87% | 3120 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,609 psi | 90% | 3173 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,041 psi | 85% | 3196 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,478 psi | 89% | 3189 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 54,911 psi | 86% | 2992 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,433 psi | 85% | 3038 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,723 psi | 86% | 3051 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,332 psi | 87% | 3091 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,406 psi | 90% | 3189 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 3035 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 82% | 57,522 psi | 90% | 3133 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,724 psi | 89% | 3100 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,565 psi | 89% | 3192 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 3189 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,363 psi | 90% | 3156 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,143 psi | 86% | 3205 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,670 psi | 67% | 3143 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,029 psi | 89% | 3166 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,301 psi | 84% | 3123 fps | 96.5% |
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 2495 | <<locked>> | 80% | 48,573 psi | 76% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,731 psi | 73% | 2930 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 38,159 psi | 60% | 2831 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,977 psi | 72% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,664 psi | 54% | 2769 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 51,547 psi | 81% | 3077 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,729 psi | 69% | 2910 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 50,517 psi | 79% | 3120 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,606 psi | 84% | 3081 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,877 psi | 75% | 3133 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 47,282 psi | 74% | 3054 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,961 psi | 69% | 2940 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,065 psi | 74% | 3012 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,156 psi | 54% | 2782 fps | 95.9% |
| Alliant Reloder-17 | 56.4 gr | 80% | 38,493 psi | 60% | 2920 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,702 psi | 73% | 3045 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,978 psi | 74% | 3097 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,066 psi | 47% | 2677 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,506 psi | 57% | 2871 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,027 psi | 55% | 2877 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,300 psi | 80% | 3091 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,237 psi | 69% | 2949 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 46,978 psi | 74% | 3097 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 44,353 psi | 70% | 2917 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,461 psi | 84% | 3107 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,541 psi | 70% | 2953 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 41,974 psi | 66% | 2943 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 48,211 psi | 76% | 3031 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 52,083 psi | 82% | 3091 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,575 psi | 49% | 2667 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,631 psi | 76% | 3064 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,469 psi | 70% | 3028 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,876 psi | 42% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,748 psi | 78% | 3035 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,533 psi | 82% | 3077 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,934 psi | 72% | 2949 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,298 psi | 76% | 2976 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 44,962 psi | 70% | 2949 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,221 psi | 68% | 2894 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,402 psi | 52% | 2720 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 48,283 psi | 76% | 3045 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 53,606 psi | 84% | 3081 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,561 psi | 81% | 3051 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,618 psi | 79% | 3002 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,093 psi | 72% | 2953 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,029 psi | 60% | 2779 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 41,118 psi | 64% | 2867 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,131 psi | 61% | 2854 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,314 psi | 79% | 3022 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,937 psi | 80% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,456 psi | 73% | 2999 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,182 psi | 76% | 3051 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 43,149 psi | 68% | 3045 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,664 psi | 54% | 2766 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 46,601 psi | 73% | 3015 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 38,493 psi | 60% | 2871 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 53,693 psi | 84% | 3097 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,766 psi | 84% | 3117 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 43% | 1818 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,686 psi | 70% | 2930 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,473 psi | 79% | 3133 fps | 99.7% |
| ReloadSwiss RS 60 | 56.4 gr | 80% | 40,915 psi | 64% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,258 psi | 54% | 2779 fps | 95.3% |
| ReloadSwiss RS 70 | 58.7 gr | 82% | 36,172 psi | 57% | 2851 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 47,848 psi | 75% | 2969 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,524 psi | 65% | 2887 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 52,185 psi | 82% | 3094 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 48,704 psi | 76% | 3087 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 44,353 psi | 70% | 2917 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,029 psi | 60% | 2779 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,561 psi | 81% | 3051 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,093 psi | 72% | 2953 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,118 psi | 64% | 2867 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,554 psi | 67% | 2940 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,417 psi | 82% | 3074 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,908 psi | 78% | 3041 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,358 psi | 80% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,265 psi | 68% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,496 psi | 67% | 2835 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,254 psi | 76% | 3081 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,010 psi | 80% | 2953 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,228 psi | 82% | 3064 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,959 psi | 66% | 2887 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,183 psi | 49% | 2717 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 43,410 psi | 68% | 2946 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,851 psi | 81% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,051 psi | 75% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,312 psi | 76% | 2949 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,059 psi | 63% | 2815 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,071 psi | 57% | 2769 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 45,687 psi | 72% | 2976 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 54,027 psi | 85% | 3081 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,572 psi | 73% | 2936 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,476 psi | 56% | 2766 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 31,009 psi | 49% | 2707 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,520 psi | 56% | 2740 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 42,192 psi | 66% | 2949 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,572 psi | 45% | 2710 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,908 psi | 78% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,588 psi | 78% | 3058 fps | 95.7% |
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 100 powders for 7 mm WSM loaded with the .284 | 125gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 3,310 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,310 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 125.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, Alliant Reloder-19 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7 mm WSM with the .284 | 125gr | Lehigh Defense Controlled Chaos 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.