Load Specifications
Load data in caliber 7 mm STW with .284 | 120gr | Barnes Solid bullet and 82 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.
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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>> | 84% | 57,928 psi | 87% | 3146 fps | 99.2% |
| Accurate 3100 | <<locked>> | 96% | 57,377 psi | 86% | 3192 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 60,089 psi | 90% | 3176 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 58,610 psi | 88% | 3248 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 57,029 psi | 85% | 3284 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 59,306 psi | 89% | 3215 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 59,596 psi | 89% | 3297 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 57,392 psi | 86% | 3291 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,960 psi | 64% | 3048 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,826 psi | 85% | 3179 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 59,219 psi | 89% | 3307 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,811 psi | 85% | 3264 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 58,943 psi | 88% | 3281 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,261 psi | 86% | 3284 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 58,276 psi | 87% | 3261 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,099 psi | 81% | 3258 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 59,553 psi | 89% | 3360 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 59,973 psi | 90% | 3327 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 58,276 psi | 87% | 3202 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,024 psi | 75% | 3173 fps | 96.8% |
| Bofors RP5 | <<locked>> | 96% | 57,261 psi | 86% | 3284 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 57,043 psi | 86% | 3186 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,055 psi | 80% | 3199 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 58,262 psi | 87% | 3219 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 56,478 psi | 85% | 3238 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 59,117 psi | 89% | 3255 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 57,174 psi | 86% | 3225 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 60,104 psi | 90% | 3271 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 59,611 psi | 89% | 3222 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,026 psi | 79% | 3317 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 57,334 psi | 86% | 3271 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 55% | 2093 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 58,610 psi | 88% | 3196 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 58,842 psi | 88% | 3225 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 58,624 psi | 88% | 3215 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 58,682 psi | 88% | 3232 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 58,233 psi | 87% | 3212 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 58,943 psi | 88% | 3327 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 58,987 psi | 88% | 3186 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 59,248 psi | 89% | 3212 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,435 psi | 86% | 3202 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,752 psi | 82% | 3153 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 59,901 psi | 90% | 3245 fps | 100% |
| Norma 204 | <<locked>> | 90% | 60,278 psi | 90% | 3284 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 57,377 psi | 86% | 3314 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 56,753 psi | 85% | 3225 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 60,278 psi | 90% | 3356 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 59,582 psi | 89% | 3281 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 58,943 psi | 88% | 3281 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 56% | 2139 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 58,044 psi | 87% | 3202 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,014 psi | 84% | 3251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 58,682 psi | 88% | 3264 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,116 psi | 86% | 3294 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,201 psi | 81% | 3317 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 58,334 psi | 87% | 3196 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,913 psi | 85% | 3202 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 58,392 psi | 88% | 3268 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 57,043 psi | 86% | 3186 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 59,248 psi | 89% | 3212 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 58,987 psi | 88% | 3186 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,435 psi | 86% | 3202 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 60,089 psi | 90% | 3255 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 58,073 psi | 87% | 3068 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 58,755 psi | 88% | 3159 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,928 psi | 87% | 3261 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 57,986 psi | 87% | 3192 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 58,972 psi | 88% | 3189 fps | 97.4% |
| Somchem S365 | <<locked>> | 90% | 57,145 psi | 86% | 3228 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 58,972 psi | 88% | 3238 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 59,567 psi | 89% | 3163 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 58,755 psi | 88% | 3219 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 58,711 psi | 88% | 3212 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 59,944 psi | 90% | 3156 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 57,870 psi | 87% | 3222 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,753 psi | 85% | 3238 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,145 psi | 86% | 3301 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,116 psi | 86% | 3274 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 58,769 psi | 88% | 3169 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,710 psi | 85% | 3241 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,275 psi | 84% | 3343 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 59,306 psi | 89% | 3235 fps | 98.9% |
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% | 50,734 psi | 76% | 3025 fps | 98.2% |
| Accurate 3100 | <<locked>> | 82% | 35,230 psi | 53% | 2759 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 56,347 psi | 84% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 44,208 psi | 66% | 2995 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 94% | 53,156 psi | 80% | 3215 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 52,243 psi | 78% | 3100 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 42,308 psi | 63% | 2972 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 46,543 psi | 70% | 3084 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 37,565 psi | 56% | 2907 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,330 psi | 80% | 3127 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,279 psi | 63% | 3005 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,008 psi | 73% | 3140 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 42,308 psi | 63% | 2963 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 43,482 psi | 65% | 3025 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,517 psi | 47% | 2730 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 33,634 psi | 50% | 2802 fps | 95.6% |
| Alliant Reloder-26 | 70.6 gr | 80% | 34,476 psi | 52% | 2861 fps | 96.7% |
| Bofors RP15 | <<locked>> | 90% | 42,902 psi | 64% | 3009 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 54,404 psi | 82% | 3143 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 46,702 psi | 70% | 3107 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 43,482 psi | 65% | 3025 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,137 psi | 71% | 3009 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 46,108 psi | 69% | 3061 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 54,404 psi | 82% | 3156 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,948 psi | 69% | 3041 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 48,457 psi | 73% | 3064 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 90% | 49,835 psi | 75% | 3094 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 48,805 psi | 73% | 3074 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,914 psi | 60% | 2884 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 92% | 40,306 psi | 60% | 3028 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,542 psi | 68% | 3054 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 41% | 1877 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,984 psi | 82% | 3140 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,554 psi | 64% | 2920 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,443 psi | 73% | 3035 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 42,148 psi | 63% | 2936 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 88% | 48,080 psi | 72% | 3028 fps | 95% |
| IMR 7828 SSC | <<locked>> | 92% | 47,877 psi | 72% | 3123 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 55,361 psi | 83% | 3130 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 46,079 psi | 69% | 2982 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 44,396 psi | 67% | 2963 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 34,476 psi | 52% | 2736 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 56,246 psi | 84% | 3189 fps | 100% |
| Norma 204 | <<locked>> | 80% | 42,540 psi | 64% | 2953 fps | 95% |
| Norma MRP | 72 gr | 84% | 39,769 psi | 60% | 2966 fps | 96% |
| Norma URP | <<locked>> | 80% | 43,468 psi | 65% | 2986 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 48,080 psi | 72% | 3136 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 42,322 psi | 63% | 2966 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 90% | 39,987 psi | 60% | 2927 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 42% | 1926 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,099 psi | 81% | 3136 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,025 psi | 78% | 3192 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,164 psi | 66% | 3009 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,598 psi | 64% | 3022 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 37,188 psi | 56% | 2927 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 51,213 psi | 77% | 3087 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 46,659 psi | 70% | 3012 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 41,597 psi | 62% | 2949 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,137 psi | 71% | 3009 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,079 psi | 69% | 2982 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 55,361 psi | 83% | 3130 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 44,396 psi | 67% | 2963 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,547 psi | 79% | 3140 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,242 psi | 77% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,063 psi | 68% | 2920 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 44,121 psi | 66% | 3005 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 51,068 psi | 77% | 3084 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 51,503 psi | 77% | 3061 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 40,219 psi | 60% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 39,479 psi | 59% | 2864 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 48,892 psi | 73% | 2999 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,875 psi | 67% | 2982 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 41,901 psi | 63% | 2907 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 56,130 psi | 84% | 3104 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 44,309 psi | 66% | 2979 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 35,273 psi | 53% | 2815 fps | 97.8% |
| Vihtavuori N560 | 77.1 gr | 90% | 49,385 psi | 74% | 3159 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 49,617 psi | 74% | 3140 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,179 psi | 66% | 2940 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,108 psi | 69% | 3048 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,007 psi | 42% | 2707 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 41,568 psi | 62% | 2907 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 82 powders for 7 mm STW loaded with the .284 | 120gr | Barnes Solid. Alliant Reloder-26 delivers the highest muzzle velocity at 3,360 fps; across all powders the maximum-charge window runs from 2,093 fps to 3,360 fps. ADI AR 2225 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 55–90 %, 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. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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 STW 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.