Load Specifications
Load data in caliber 7 mm STW with .284 | 110gr | Barnes TTSX FB bullet and 87 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 ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 59,364 psi | 89% | 3235 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 56,913 psi | 85% | 3255 fps | 98.6% |
| Accurate 3100 | <<locked>> | 98% | 57,334 psi | 86% | 3297 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 60,002 psi | 90% | 3294 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 58,784 psi | 88% | 3363 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 60,031 psi | 90% | 3340 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 60,075 psi | 90% | 3409 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 57,870 psi | 87% | 3402 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,450 psi | 86% | 3307 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,580 psi | 86% | 3333 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 59,524 psi | 89% | 3425 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,145 psi | 86% | 3386 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 59,524 psi | 89% | 3392 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,435 psi | 86% | 3392 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 58,363 psi | 87% | 3376 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,502 psi | 76% | 3297 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 59,727 psi | 90% | 3471 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,275 psi | 84% | 3369 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 58,624 psi | 88% | 3320 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 57,435 psi | 86% | 3392 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 57,667 psi | 86% | 3304 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,734 psi | 75% | 3228 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 84% | 59,016 psi | 88% | 3343 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,898 psi | 85% | 3353 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 59,886 psi | 90% | 3376 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 58,030 psi | 87% | 3337 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,579 psi | 85% | 3314 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 59,843 psi | 90% | 3337 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,400 psi | 74% | 3337 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 88% | 58,175 psi | 87% | 3392 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 55% | 2178 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 60,263 psi | 90% | 3343 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 59,364 psi | 89% | 3323 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 58,102 psi | 87% | 3297 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 59,524 psi | 89% | 3340 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 59,451 psi | 89% | 3337 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 59,030 psi | 88% | 3350 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 59,088 psi | 89% | 3363 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 58,842 psi | 88% | 3323 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 59,567 psi | 89% | 3442 fps | 97.6% |
| Lovex S062 | <<locked>> | 84% | 59,495 psi | 89% | 3307 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 59,741 psi | 90% | 3330 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,711 psi | 87% | 3314 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,836 psi | 76% | 3189 fps | 99% |
| Norma 203B | <<locked>> | 82% | 56,884 psi | 85% | 3314 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,971 psi | 85% | 3333 fps | 97.9% |
| Norma MRP | <<locked>> | 96% | 57,580 psi | 86% | 3422 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 56,985 psi | 85% | 3340 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 58,189 psi | 87% | 3333 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,260 psi | 84% | 3386 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 60,162 psi | 90% | 3399 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,882 psi | 82% | 3317 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 56% | 2224 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 58,827 psi | 88% | 3320 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,579 psi | 85% | 3379 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 59,205 psi | 89% | 3379 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,754 psi | 87% | 3415 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,328 psi | 75% | 3337 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 57,566 psi | 86% | 3268 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 58,682 psi | 88% | 3317 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,493 psi | 86% | 3314 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 96% | 58,885 psi | 88% | 3383 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 57,667 psi | 86% | 3304 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 59,741 psi | 90% | 3330 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 59,495 psi | 89% | 3307 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,711 psi | 87% | 3314 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,826 psi | 85% | 3320 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,972 psi | 88% | 3192 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 59,524 psi | 89% | 3278 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 58,407 psi | 88% | 3376 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 58,276 psi | 87% | 3310 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 59,727 psi | 90% | 3297 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 57,261 psi | 86% | 3343 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 59,292 psi | 89% | 3346 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 58,102 psi | 87% | 3225 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 58,523 psi | 88% | 3238 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 60,176 psi | 90% | 3284 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 59,292 psi | 89% | 3337 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 59,103 psi | 89% | 3320 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 57,014 psi | 85% | 3232 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 58,436 psi | 88% | 3337 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,536 psi | 85% | 3343 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,493 psi | 86% | 3412 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 59,625 psi | 89% | 3291 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,116 psi | 86% | 3356 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,782 psi | 84% | 3448 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 60,075 psi | 90% | 3346 fps | 98.6% |
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% | 55,317 psi | 83% | 3179 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 53,229 psi | 80% | 3189 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 37,231 psi | 56% | 2900 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 52,489 psi | 79% | 3186 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,828 psi | 61% | 3025 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,472 psi | 74% | 3163 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 45,571 psi | 68% | 3140 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 50,357 psi | 75% | 3258 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,328 psi | 75% | 3186 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,780 psi | 81% | 3268 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,508 psi | 59% | 3041 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,759 psi | 69% | 3186 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 45,353 psi | 68% | 3130 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 46,528 psi | 70% | 3186 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,834 psi | 43% | 2733 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 35,592 psi | 53% | 2946 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 82% | 34,055 psi | 51% | 2936 fps | 95.5% |
| Bofors RP15 | <<locked>> | 94% | 45,672 psi | 68% | 3166 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 50,981 psi | 76% | 3199 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 46,528 psi | 70% | 3186 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 44,440 psi | 67% | 3051 fps | 96.1% |
| Hodgdon H1000 | <<locked>> | 98% | 46,224 psi | 69% | 3153 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 51,227 psi | 77% | 3212 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 42,888 psi | 64% | 3077 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,658 psi | 68% | 3110 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 94% | 54,041 psi | 81% | 3268 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,910 psi | 79% | 3251 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,941 psi | 55% | 2917 fps | 98.7% |
| Hodgdon Retumbo | <<locked>> | 96% | 42,859 psi | 64% | 3179 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,525 psi | 64% | 3091 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 41% | 1955 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 56,550 psi | 85% | 3287 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,996 psi | 78% | 3202 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,346 psi | 81% | 3235 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 42,830 psi | 64% | 3025 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,919 psi | 69% | 3087 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 39,146 psi | 59% | 2969 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 55,245 psi | 83% | 3301 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,677 psi | 77% | 3196 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 51,532 psi | 77% | 3294 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 52,388 psi | 79% | 3196 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,178 psi | 65% | 3025 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 41,568 psi | 62% | 3002 fps | 96.1% |
| Lovex S071 | <<locked>> | 90% | 36,100 psi | 54% | 2871 fps | 95% |
| Norma 203B | <<locked>> | 80% | 53,156 psi | 80% | 3251 fps | 100% |
| Norma 204 | <<locked>> | 84% | 45,977 psi | 69% | 3123 fps | 95.2% |
| Norma MRP | 76.8 gr | 88% | 42,598 psi | 64% | 3130 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 40,509 psi | 61% | 3018 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 54,389 psi | 82% | 3278 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 48,138 psi | 72% | 3232 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,537 psi | 59% | 3002 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 94% | 43,221 psi | 65% | 3091 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 41% | 2005 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,300 psi | 77% | 3192 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,646 psi | 73% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,973 psi | 61% | 3041 fps | 97.9% |
| ReloadSwiss RS 70 | 71.3 gr | 80% | 39,697 psi | 60% | 3054 fps | 97.4% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 39,958 psi | 60% | 3087 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 54,012 psi | 81% | 3215 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,921 psi | 72% | 3136 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 50,270 psi | 75% | 3182 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 44,411 psi | 67% | 3107 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 44,440 psi | 67% | 3051 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,178 psi | 65% | 3025 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 52,388 psi | 79% | 3196 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,568 psi | 62% | 3002 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,603 psi | 74% | 3199 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,747 psi | 73% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,351 psi | 63% | 2959 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 44,019 psi | 66% | 3100 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 47,892 psi | 72% | 3136 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,112 psi | 78% | 3166 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,028 psi | 56% | 2966 fps | 99.5% |
| Somchem S385 | <<locked>> | 86% | 42,061 psi | 63% | 3018 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 54,636 psi | 82% | 3176 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,926 psi | 82% | 3186 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 46,006 psi | 69% | 3058 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,930 psi | 63% | 3022 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 44,701 psi | 67% | 3061 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 53,156 psi | 80% | 3173 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,336 psi | 62% | 3018 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 32,227 psi | 48% | 2828 fps | 95.7% |
| Vihtavuori N560 | 82 gr | 94% | 53,330 psi | 80% | 3337 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,394 psi | 62% | 2982 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 43,076 psi | 65% | 3084 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 27,470 psi | 41% | 2762 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,918 psi | 67% | 3074 fps | 95.2% |
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 87 powders for 7 mm STW loaded with the .284 | 110gr | Barnes TTSX FB. Alliant Reloder-26 delivers the highest muzzle velocity at 3,471 fps; across all powders the maximum-charge window runs from 2,178 fps to 3,471 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 87 of the 87 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 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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, ReloadSwiss RS 70 rank at the top here: for 7 mm STW with the .284 | 110gr | Barnes TTSX FB 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.