Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 120gr | Barnes TTSX BT bullet and 91 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-26 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 2495 | <<locked>> | 84% | 57,159 psi | 90% | 3156 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,332 psi | 87% | 3169 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,156 psi | 83% | 3196 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 57,493 psi | 90% | 3212 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,143 psi | 86% | 3264 fps | 99.8% |
| Accurate High Country | <<locked>> | 98% | 54,708 psi | 86% | 3350 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 82% | 56,927 psi | 89% | 3251 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,563 psi | 86% | 3196 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 56,826 psi | 89% | 3314 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,896 psi | 84% | 3320 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,711 psi | 90% | 3261 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,376 psi | 87% | 3222 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,477 psi | 87% | 3245 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,188 psi | 88% | 3333 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,911 psi | 84% | 3301 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,057 psi | 88% | 3297 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 3287 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 3219 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,482 psi | 68% | 3117 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,070 psi | 85% | 3369 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,246 psi | 90% | 3264 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 56,144 psi | 88% | 3238 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 3287 fps | 96.9% |
| Bofors RP7 | <<locked>> | 90% | 55,608 psi | 87% | 3212 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 56,739 psi | 89% | 3255 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 53,998 psi | 85% | 3258 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 90% | 57,464 psi | 90% | 3284 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 57,551 psi | 90% | 3261 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,594 psi | 89% | 3251 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,172 psi | 85% | 3235 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,476 psi | 85% | 3297 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 56% | 2060 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,129 psi | 86% | 3205 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,450 psi | 90% | 3235 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,710 psi | 89% | 3215 fps | 98.7% |
| IMR 4350 | <<locked>> | 94% | 56,826 psi | 89% | 3248 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,595 psi | 90% | 3251 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 55,651 psi | 87% | 3255 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 56,956 psi | 89% | 3274 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,334 psi | 90% | 3219 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,564 psi | 87% | 3169 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,653 psi | 90% | 3228 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,508 psi | 90% | 3245 fps | 99.5% |
| Lovex S070 | <<locked>> | 92% | 55,245 psi | 87% | 3225 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,787 psi | 69% | 3018 fps | 97.1% |
| Norma 201 | <<locked>> | 82% | 55,201 psi | 87% | 3186 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,217 psi | 88% | 3186 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,766 psi | 86% | 3225 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,998 psi | 85% | 3238 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3383 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 57,638 psi | 90% | 3310 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,956 psi | 88% | 3255 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,826 psi | 89% | 3310 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,666 psi | 57% | 2110 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,840 psi | 89% | 3238 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,594 psi | 89% | 3320 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,363 psi | 90% | 3360 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,419 psi | 87% | 3287 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,157 psi | 85% | 3320 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 55,985 psi | 88% | 3186 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,275 psi | 88% | 3232 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 55,056 psi | 86% | 3278 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 55,608 psi | 87% | 3212 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,508 psi | 90% | 3245 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,334 psi | 90% | 3219 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,653 psi | 90% | 3228 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,245 psi | 87% | 3225 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,520 psi | 85% | 3238 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,303 psi | 87% | 3215 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,275 psi | 88% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,493 psi | 90% | 3117 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,392 psi | 90% | 3192 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,578 psi | 86% | 3271 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 55,767 psi | 87% | 3110 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,260 psi | 88% | 3232 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 57,232 psi | 90% | 3314 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,637 psi | 87% | 3248 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 56,855 psi | 89% | 3097 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,463 psi | 88% | 3146 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,971 psi | 89% | 3163 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,682 psi | 90% | 3202 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,188 psi | 88% | 3245 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,445 psi | 81% | 3156 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 55,158 psi | 86% | 3153 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,361 psi | 87% | 3248 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 3310 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,347 psi | 88% | 3212 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,244 psi | 85% | 3261 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,208 psi | 71% | 3268 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,477 psi | 87% | 3219 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 3245 fps | 97.3% |
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% | 49,937 psi | 78% | 3045 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,283 psi | 76% | 3038 fps | 96.4% |
| Accurate 3100 | <<locked>> | 90% | 37,333 psi | 59% | 2871 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 47,297 psi | 74% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,940 psi | 56% | 2864 fps | 96.3% |
| Accurate High Country | <<locked>> | 96% | 50,952 psi | 80% | 3278 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 53,301 psi | 84% | 3189 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,063 psi | 71% | 3015 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 49,458 psi | 78% | 3176 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,038 psi | 78% | 3248 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 54,027 psi | 85% | 3202 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,484 psi | 71% | 3041 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,733 psi | 76% | 3120 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,259 psi | 55% | 2881 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,248 psi | 63% | 3028 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,936 psi | 77% | 3163 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,195 psi | 72% | 3146 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,254 psi | 46% | 2710 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 38,130 psi | 60% | 2979 fps | 96% |
| Alliant Reloder-26 | 68.2 gr | 86% | 34,171 psi | 54% | 2913 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,388 psi | 84% | 3202 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 45,658 psi | 72% | 3051 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 46,195 psi | 72% | 3146 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 42,902 psi | 67% | 2959 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 46,282 psi | 73% | 3061 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 40,872 psi | 64% | 2989 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 47,094 psi | 74% | 3087 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 53,882 psi | 84% | 3199 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,793 psi | 51% | 2766 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,618 psi | 79% | 3173 fps | 100% |
| Hodgdon Superformance | 68.7 gr | 84% | 43,381 psi | 68% | 3074 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 42% | 1847 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,576 psi | 81% | 3143 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,384 psi | 74% | 3054 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,966 psi | 78% | 3091 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 44,019 psi | 69% | 3002 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,872 psi | 66% | 2940 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 34,650 psi | 54% | 2815 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 50,024 psi | 78% | 3153 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 53,519 psi | 84% | 3159 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,272 psi | 82% | 3110 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,616 psi | 75% | 3054 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,160 psi | 61% | 2877 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 39,929 psi | 63% | 2913 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 38,247 psi | 60% | 2894 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 51,851 psi | 81% | 3127 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,576 psi | 82% | 3127 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,109 psi | 75% | 3104 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 50,386 psi | 79% | 3169 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 42,525 psi | 67% | 3097 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 35,882 psi | 56% | 2861 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 48,486 psi | 76% | 3123 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 40,089 psi | 63% | 2972 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 43% | 1890 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,441 psi | 73% | 3045 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,779 psi | 83% | 3255 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,815 psi | 67% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,868 psi | 56% | 2881 fps | 95.9% |
| ReloadSwiss RS 70 | 64.4 gr | 82% | 37,652 psi | 59% | 2956 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,400 psi | 77% | 3074 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,815 psi | 67% | 2986 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 94% | 48,051 psi | 75% | 3143 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 82% | 42,902 psi | 67% | 2959 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,160 psi | 61% | 2877 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,519 psi | 84% | 3159 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,616 psi | 75% | 3054 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,929 psi | 63% | 2913 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,324 psi | 69% | 3048 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,808 psi | 81% | 3153 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,823 psi | 83% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,541 psi | 70% | 2910 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,075 psi | 64% | 2877 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,616 psi | 75% | 3140 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,518 psi | 82% | 3058 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,337 psi | 68% | 2989 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 32,430 psi | 51% | 2812 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 45,556 psi | 71% | 3058 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 53,403 psi | 84% | 3048 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,617 psi | 78% | 3041 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,864 psi | 78% | 3051 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,336 psi | 65% | 2913 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,434 psi | 59% | 2871 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 96% | 44,962 psi | 70% | 3031 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 48,370 psi | 76% | 3041 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,927 psi | 58% | 2867 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 32,256 psi | 51% | 2799 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,840 psi | 58% | 2841 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 41,089 psi | 64% | 2992 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,617 psi | 46% | 2808 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,909 psi | 81% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,646 psi | 76% | 3110 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 108 powders for 7 mm Weath. Mag. loaded with the .284 | 120gr | Barnes TTSX BT. Norma MRP delivers the highest muzzle velocity at 3,383 fps; across all powders the maximum-charge window runs from 2,060 fps to 3,383 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 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 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-26, Hodgdon Superformance rank at the top here: for 7 mm Weath. Mag. with the .284 | 120gr | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 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.