Load Specifications
Load data in caliber 7 mm STW with .284 | 110gr | Impala LWHV LS bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Alliant Reloder-16.
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>> | 82% | 59,988 psi | 90% | 3284 fps | 98.9% |
| Accurate 3100 | <<locked>> | 96% | 57,870 psi | 87% | 3294 fps | 99.6% |
| Accurate 4350 | <<locked>> | 88% | 58,711 psi | 88% | 3343 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 59,640 psi | 89% | 3432 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 58,929 psi | 88% | 3307 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 58,682 psi | 88% | 3376 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 96% | 56,623 psi | 85% | 3366 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,207 psi | 65% | 3127 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,058 psi | 86% | 3284 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 58,450 psi | 88% | 3399 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 60,031 psi | 90% | 3419 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 58,247 psi | 87% | 3360 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,695 psi | 85% | 3369 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 57,812 psi | 87% | 3360 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,519 psi | 80% | 3343 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 58,726 psi | 88% | 3451 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 59,553 psi | 89% | 3412 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 58,653 psi | 88% | 3304 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 56,695 psi | 85% | 3369 fps | 98.1% |
| Bofors RP7 | <<locked>> | 86% | 57,116 psi | 86% | 3278 fps | 98.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,605 psi | 79% | 3271 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 82% | 58,378 psi | 88% | 3317 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 59,828 psi | 90% | 3386 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 58,639 psi | 88% | 3340 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 94% | 56,739 psi | 85% | 3307 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 59,321 psi | 89% | 3346 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 59,219 psi | 89% | 3314 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,489 psi | 79% | 3389 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 86% | 56,623 psi | 85% | 3356 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 55% | 2172 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 58,349 psi | 87% | 3291 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 58,465 psi | 88% | 3310 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 58,291 psi | 87% | 3304 fps | 99.1% |
| IMR 4831 | <<locked>> | 90% | 58,668 psi | 88% | 3327 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,696 psi | 86% | 3291 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 98% | 58,276 psi | 87% | 3409 fps | 97.2% |
| Lovex S062 | <<locked>> | 82% | 59,088 psi | 89% | 3287 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 59,321 psi | 89% | 3307 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 57,624 psi | 86% | 3297 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,100 psi | 83% | 3248 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 59,872 psi | 90% | 3343 fps | 100% |
| Norma 204 | <<locked>> | 90% | 59,799 psi | 90% | 3369 fps | 98.2% |
| Norma MRP | <<locked>> | 94% | 56,695 psi | 85% | 3399 fps | 99.1% |
| Norma URP | <<locked>> | 90% | 60,220 psi | 90% | 3379 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 59,248 psi | 89% | 3428 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 90% | 59,205 psi | 89% | 3373 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 58,073 psi | 87% | 3356 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 57% | 2221 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,769 psi | 87% | 3287 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 59,350 psi | 89% | 3409 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 58,581 psi | 88% | 3360 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,347 psi | 84% | 3383 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,722 psi | 81% | 3392 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 58,682 psi | 88% | 3301 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 60,220 psi | 90% | 3343 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 94% | 58,015 psi | 87% | 3356 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 86% | 57,116 psi | 86% | 3278 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 59,321 psi | 89% | 3307 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 59,088 psi | 89% | 3287 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,624 psi | 86% | 3297 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 59,799 psi | 90% | 3353 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 58,088 psi | 87% | 3166 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 58,929 psi | 88% | 3251 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,537 psi | 86% | 3350 fps | 98.2% |
| Somchem S355 | <<locked>> | 84% | 58,146 psi | 87% | 3291 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 58,639 psi | 88% | 3264 fps | 96.5% |
| Somchem S365 | <<locked>> | 90% | 56,855 psi | 85% | 3327 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 58,943 psi | 88% | 3327 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 59,553 psi | 89% | 3258 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 58,247 psi | 87% | 3310 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 58,204 psi | 87% | 3294 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 59,915 psi | 90% | 3258 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 57,856 psi | 87% | 3317 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,724 psi | 85% | 3337 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,478 psi | 85% | 3379 fps | 96.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,826 psi | 85% | 3356 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 58,059 psi | 87% | 3258 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 60,075 psi | 90% | 3392 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 59,321 psi | 89% | 3501 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 58,943 psi | 88% | 3314 fps | 98.3% |
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 2700 | <<locked>> | 80% | 56,246 psi | 84% | 3225 fps | 98.4% |
| Accurate 3100 | <<locked>> | 82% | 36,593 psi | 55% | 2867 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 45,092 psi | 68% | 3104 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 55,709 psi | 84% | 3360 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 52,141 psi | 78% | 3192 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 86% | 45,281 psi | 68% | 3120 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 53,098 psi | 80% | 3301 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 98% | 40,509 psi | 61% | 3058 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,650 psi | 80% | 3228 fps | 100% |
| Alliant Reloder-16 | 63.6 gr | 80% | 42,380 psi | 64% | 3094 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,820 psi | 73% | 3235 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 45,252 psi | 68% | 3110 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 46,630 psi | 70% | 3176 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,430 psi | 49% | 2835 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 36,709 psi | 55% | 2966 fps | 95.9% |
| Alliant Reloder-26 | 70.2 gr | 80% | 35,346 psi | 53% | 2966 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 45,992 psi | 69% | 3163 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 54,868 psi | 82% | 3248 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 46,630 psi | 70% | 3176 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,572 psi | 71% | 3100 fps | 96.8% |
| Hodgdon H1000 | <<locked>> | 98% | 49,342 psi | 74% | 3205 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 54,665 psi | 82% | 3255 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 46,151 psi | 69% | 3136 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 48,472 psi | 73% | 3153 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 92% | 53,011 psi | 79% | 3238 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,579 psi | 83% | 3284 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,306 psi | 60% | 2976 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 94% | 43,308 psi | 65% | 3179 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,556 psi | 68% | 3146 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 42% | 1952 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,868 psi | 82% | 3235 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,946 psi | 64% | 3012 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,457 psi | 73% | 3123 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 42,815 psi | 64% | 3038 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,273 psi | 81% | 3232 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 50,995 psi | 76% | 3271 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 55,608 psi | 83% | 3232 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 46,644 psi | 70% | 3081 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 45,049 psi | 68% | 3061 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 38,043 psi | 57% | 2907 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 56,304 psi | 84% | 3287 fps | 100% |
| Norma 204 | <<locked>> | 82% | 45,745 psi | 69% | 3104 fps | 95% |
| Norma MRP | 71.6 gr | 84% | 40,234 psi | 60% | 3061 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 43,830 psi | 66% | 3081 fps | 98.7% |
| Ramshot Grand | <<locked>> | 94% | 51,343 psi | 77% | 3284 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 42,627 psi | 64% | 3058 fps | 97% |
| Ramshot Magnum | <<locked>> | 92% | 43,439 psi | 65% | 3081 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 42% | 1998 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,186 psi | 81% | 3228 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,576 psi | 77% | 3291 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,628 psi | 67% | 3110 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,801 psi | 64% | 3114 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 40,538 psi | 61% | 3091 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 51,793 psi | 78% | 3189 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 49,777 psi | 75% | 3156 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 44,730 psi | 67% | 3104 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,572 psi | 71% | 3100 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,644 psi | 70% | 3081 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 55,608 psi | 83% | 3232 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 45,049 psi | 68% | 3061 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,475 psi | 79% | 3235 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,488 psi | 77% | 3068 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,861 psi | 69% | 3015 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 44,411 psi | 67% | 3097 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 51,459 psi | 77% | 3182 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,013 psi | 82% | 3205 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 40,785 psi | 61% | 3038 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 42,844 psi | 64% | 3022 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 49,269 psi | 74% | 3100 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,136 psi | 68% | 3077 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 45,049 psi | 68% | 3054 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 56,217 psi | 84% | 3202 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 44,788 psi | 67% | 3074 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 36,332 psi | 54% | 2927 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 92% | 52,707 psi | 79% | 3314 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 53,113 psi | 80% | 3291 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,324 psi | 66% | 3031 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 46,325 psi | 69% | 3136 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,254 psi | 44% | 2818 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,933 psi | 67% | 3061 fps | 95.1% |
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 80 powders for 7 mm STW loaded with the .284 | 110gr | Impala LWHV LS. Winchester StaBALL HD delivers the highest muzzle velocity at 3,501 fps; across all powders the maximum-charge window runs from 2,172 fps to 3,501 fps. ADI AR 2225 gives the best case fill at 100 %, and 80 of the 80 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 110.0 gr projectile in 0.284" calls for a 1:9.5 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, Alliant Reloder-26, Alliant Reloder-16 rank at the top here: for 7 mm STW with the .284 | 110gr | Impala LWHV LS 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.