Load Specifications
Bullet Manufacturer:Brenneke
Bullet Weight:128 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm STW load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:97 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:66,717 psi
Recommended Twist Rate:1:10.5
Load data in caliber 7 mm STW with .284 | 128gr | Brenneke TUG Nature Plus bullet and 163 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC and Norma MRP.
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 3100 | <<locked>> | 96% | 59,277 psi | 89% | 3150 fps | 100% |
| Accurate 3100 | <<locked>> | 96% | 58,537 psi | 88% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,420 psi | 85% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 59,756 psi | 90% | 3186 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,391 psi | 85% | 3235 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 94% | 58,508 psi | 88% | 3251 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 94% | 57,798 psi | 87% | 3238 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 57,276 psi | 86% | 3107 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 56,681 psi | 85% | 3097 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,653 psi | 86% | 3196 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 92% | 57,145 psi | 86% | 3182 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 59,669 psi | 89% | 3261 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 96% | 58,929 psi | 88% | 3245 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,009 psi | 75% | 3077 fps | 97.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,197 psi | 74% | 3058 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,512 psi | 67% | 3022 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,947 psi | 66% | 3009 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,812 psi | 87% | 3189 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,305 psi | 86% | 3179 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,465 psi | 88% | 3127 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,088 psi | 87% | 3120 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,464 psi | 86% | 3202 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,840 psi | 85% | 3189 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,929 psi | 88% | 3215 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,320 psi | 87% | 3205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,087 psi | 86% | 3179 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,565 psi | 85% | 3169 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 59,538 psi | 89% | 3251 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 58,784 psi | 88% | 3238 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,739 psi | 85% | 3163 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 59,828 psi | 90% | 3205 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,463 psi | 85% | 3225 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,680 psi | 83% | 3209 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,580 psi | 86% | 3251 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,768 psi | 85% | 3238 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 58,363 psi | 87% | 3232 fps | 99.3% |
| Bofors RP15 | <<locked>> | 98% | 57,638 psi | 86% | 3215 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 59,843 psi | 90% | 3146 fps | 100% |
| Bofors RP3 | <<locked>> | 82% | 59,234 psi | 89% | 3136 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,373 psi | 79% | 3150 fps | 98% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,445 psi | 77% | 3130 fps | 97.8% |
| Bofors RP5 | <<locked>> | 96% | 59,538 psi | 89% | 3251 fps | 99.5% |
| Bofors RP5 | <<locked>> | 96% | 58,784 psi | 88% | 3238 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 58,566 psi | 88% | 3143 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 58,044 psi | 87% | 3130 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,347 psi | 83% | 3176 fps | 98.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,491 psi | 82% | 3159 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 59,828 psi | 90% | 3169 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 59,277 psi | 89% | 3156 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 58,305 psi | 87% | 3196 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 86% | 57,711 psi | 87% | 3186 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 57,188 psi | 86% | 3153 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 86% | 60,365 psi | 90% | 3199 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 59,306 psi | 89% | 3192 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 94% | 58,856 psi | 88% | 3182 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,102 psi | 87% | 3173 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,377 psi | 86% | 3159 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,653 psi | 86% | 3117 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,014 psi | 85% | 3107 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,259 psi | 83% | 3291 fps | 99.7% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,563 psi | 82% | 3274 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 59,611 psi | 89% | 3232 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 58,885 psi | 88% | 3222 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,811 psi | 55% | 2037 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 55% | 2034 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 60,278 psi | 90% | 3143 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 59,669 psi | 89% | 3133 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,884 psi | 85% | 3123 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 60,075 psi | 90% | 3169 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 60,263 psi | 90% | 3169 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 59,741 psi | 90% | 3159 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,695 psi | 85% | 3127 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 59,915 psi | 90% | 3173 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 60,162 psi | 90% | 3176 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 94% | 59,480 psi | 89% | 3163 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 57,348 psi | 86% | 3232 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 56,594 psi | 85% | 3219 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 59,872 psi | 90% | 3120 fps | 100% |
| Lovex S065 | <<locked>> | 86% | 57,116 psi | 86% | 3107 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 60,234 psi | 90% | 3153 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 58,987 psi | 88% | 3156 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 58,407 psi | 88% | 3146 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,608 psi | 85% | 3110 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,840 psi | 84% | 3097 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 58,320 psi | 87% | 3182 fps | 99.1% |
| Norma 204 | <<locked>> | 88% | 57,566 psi | 86% | 3166 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 39,900 psi | 60% | 2933 fps | 96.8% |
| Norma 217ᴾ | <<locked>> | 100% | 39,291 psi | 59% | 2913 fps | 96.4% |
| Norma MRP | <<locked>> | 94% | 59,799 psi | 90% | 3278 fps | 99.9% |
| Norma MRP | <<locked>> | 94% | 59,016 psi | 88% | 3261 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 58,581 psi | 88% | 3179 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,957 psi | 87% | 3166 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,392 psi | 88% | 3255 fps | 98.9% |
| Ramshot Grand | <<locked>> | 96% | 57,638 psi | 86% | 3241 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 57,725 psi | 87% | 3182 fps | 100% |
| Ramshot Hunter | <<locked>> | 88% | 56,956 psi | 85% | 3166 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,000 psi | 85% | 3179 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 98% | 56,043 psi | 84% | 3166 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,681 psi | 56% | 2087 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,608 psi | 56% | 2083 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 59,640 psi | 89% | 3153 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 59,103 psi | 89% | 3143 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 58,537 psi | 88% | 3205 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,856 psi | 87% | 3192 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,782 psi | 85% | 3159 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 60,031 psi | 90% | 3205 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 59,611 psi | 89% | 3255 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 58,769 psi | 88% | 3238 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,768 psi | 85% | 3291 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,854 psi | 84% | 3274 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,445 psi | 77% | 3156 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 84% | 59,959 psi | 90% | 3143 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 59,567 psi | 89% | 3136 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 58,871 psi | 88% | 3166 fps | 98.6% |
| Rottweil R 904 | <<locked>> | 92% | 58,131 psi | 87% | 3153 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 92% | 56,695 psi | 85% | 3173 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 94% | 59,814 psi | 90% | 3219 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 58,566 psi | 88% | 3143 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 86% | 58,044 psi | 87% | 3130 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,116 psi | 86% | 3107 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 88% | 60,234 psi | 90% | 3153 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 59,872 psi | 90% | 3120 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 58,987 psi | 88% | 3156 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 58,407 psi | 88% | 3146 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 58,189 psi | 87% | 3150 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,609 psi | 86% | 3143 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 59,625 psi | 89% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 59,277 psi | 89% | 3005 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,507 psi | 85% | 3054 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 59,770 psi | 90% | 3104 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 60,104 psi | 90% | 3225 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 59,350 psi | 89% | 3212 fps | 99.4% |
| Somchem S355 | <<locked>> | 84% | 59,596 psi | 89% | 3140 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 58,958 psi | 88% | 3127 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,739 psi | 85% | 3091 fps | 97.7% |
| Somchem S361 | <<locked>> | 92% | 60,234 psi | 90% | 3140 fps | 98.2% |
| Somchem S365 | <<locked>> | 90% | 59,451 psi | 89% | 3179 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 58,566 psi | 88% | 3166 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,188 psi | 86% | 3140 fps | 99.6% |
| Somchem S385 | <<locked>> | 94% | 60,220 psi | 90% | 3182 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,203 psi | 86% | 3051 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 56,840 psi | 85% | 3045 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,768 psi | 85% | 3117 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 60,017 psi | 90% | 3159 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,753 psi | 85% | 3114 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 98% | 60,162 psi | 90% | 3163 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 59,770 psi | 90% | 3173 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 59,248 psi | 89% | 3166 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 58,871 psi | 88% | 3196 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 58,059 psi | 87% | 3182 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 59,480 psi | 89% | 3271 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 94% | 58,726 psi | 88% | 3258 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 59,350 psi | 89% | 3241 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 58,624 psi | 88% | 3225 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,301 psi | 78% | 3159 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,666 psi | 85% | 3068 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 60,162 psi | 90% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 58,537 psi | 88% | 3199 fps | 99.9% |
| Winchester 760 | <<locked>> | 86% | 57,943 psi | 87% | 3189 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 59,712 psi | 90% | 3307 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 58,450 psi | 88% | 3291 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,450 psi | 86% | 3136 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,739 psi | 85% | 3120 fps | 99% |
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 3100 | <<locked>> | 80% | 33,663 psi | 50% | 2657 fps | 95.7% |
| Accurate 3100 | <<locked>> | 80% | 33,170 psi | 50% | 2641 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 45,498 psi | 68% | 2949 fps | 99.7% |
| Accurate 4350 | <<locked>> | 80% | 44,875 psi | 67% | 2936 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 45,382 psi | 68% | 3025 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 90% | 50,531 psi | 76% | 3110 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 90% | 49,821 psi | 75% | 3094 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 53,548 psi | 80% | 3048 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 53,156 psi | 80% | 3041 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 40,814 psi | 61% | 2874 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 82% | 40,321 psi | 60% | 2858 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 88% | 44,904 psi | 67% | 2989 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 88% | 44,440 psi | 67% | 2976 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 96% | 43,395 psi | 65% | 2940 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 98% | 45,890 psi | 69% | 2989 fps | 96% |
| ADI AR 2225 | <<locked>> | 94% | 36,187 psi | 54% | 2815 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 94% | 35,665 psi | 53% | 2799 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 41,104 psi | 62% | 2871 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 40,770 psi | 61% | 2861 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,839 psi | 82% | 3074 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,447 psi | 82% | 3064 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,801 psi | 66% | 2966 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,178 psi | 65% | 2949 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,850 psi | 76% | 3094 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,227 psi | 75% | 3081 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,712 psi | 61% | 2864 fps | 95.4% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,379 psi | 61% | 2854 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 41,887 psi | 63% | 2923 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 86% | 41,350 psi | 62% | 2907 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,343 psi | 48% | 2690 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,010 psi | 48% | 2680 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 32,314 psi | 48% | 2707 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,923 psi | 48% | 2694 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,868 psi | 54% | 2831 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,172 psi | 53% | 2812 fps | 97.6% |
| Bofors RP15 | <<locked>> | 88% | 41,481 psi | 62% | 2910 fps | 95.7% |
| Bofors RP15 | <<locked>> | 88% | 40,988 psi | 61% | 2897 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 55,854 psi | 84% | 3087 fps | 100% |
| Bofors RP3 | <<locked>> | 80% | 55,216 psi | 83% | 3077 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 42,206 psi | 63% | 2946 fps | 95.2% |
| Bofors RP30 | <<locked>> | 96% | 44,541 psi | 67% | 2995 fps | 96% |
| Bofors RP5 | <<locked>> | 86% | 41,887 psi | 63% | 2923 fps | 96% |
| Bofors RP5 | <<locked>> | 86% | 41,350 psi | 62% | 2907 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,341 psi | 72% | 2966 fps | 98.4% |
| Bofors RP7 | <<locked>> | 80% | 47,776 psi | 72% | 2953 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 92% | 41,495 psi | 62% | 2900 fps | 95.3% |
| Hodgdon H1000 | <<locked>> | 94% | 43,990 psi | 66% | 2956 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 55,912 psi | 84% | 3107 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 55,521 psi | 83% | 3100 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 47,398 psi | 71% | 3005 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 80% | 46,818 psi | 70% | 2992 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,951 psi | 75% | 3028 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 49,400 psi | 74% | 3015 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 48,124 psi | 72% | 2999 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 88% | 47,471 psi | 71% | 2982 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 47,152 psi | 71% | 2979 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,659 psi | 70% | 2966 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,060 psi | 62% | 2838 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,669 psi | 61% | 2828 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,914 psi | 58% | 2933 fps | 95.5% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,334 psi | 57% | 2913 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 47,398 psi | 71% | 3028 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 80% | 46,862 psi | 70% | 3012 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 41% | 1827 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 41% | 1824 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 56,347 psi | 84% | 3087 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 55,927 psi | 84% | 3077 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,772 psi | 66% | 2884 fps | 97.5% |
| IMR 4350 | <<locked>> | 80% | 43,424 psi | 65% | 2874 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,792 psi | 75% | 2995 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,240 psi | 74% | 2982 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 43,381 psi | 65% | 2897 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,815 psi | 64% | 2884 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 46,383 psi | 70% | 2933 fps | 95.4% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,934 psi | 69% | 2923 fps | 95.2% |
| IMR 7828 SSC | 74.1 gr | 90% | 46,296 psi | 69% | 3028 fps | 95.9% |
| IMR 7828 SSC | 74.1 gr | 90% | 45,600 psi | 68% | 3012 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 56,188 psi | 84% | 3064 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 47,050 psi | 71% | 2936 fps | 99.4% |
| Lovex S065 | <<locked>> | 80% | 46,702 psi | 70% | 2927 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 45,527 psi | 68% | 2920 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 44,976 psi | 67% | 2910 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 32,924 psi | 49% | 2638 fps | 95.3% |
| Lovex S071 | <<locked>> | 84% | 32,576 psi | 49% | 2628 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 43,859 psi | 66% | 2917 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 43,526 psi | 65% | 2907 fps | 96% |
| Norma 217 | <<locked>> | 98% | 37,188 psi | 56% | 2864 fps | 95.6% |
| Norma 217 | <<locked>> | 98% | 36,593 psi | 55% | 2848 fps | 95.3% |
| Norma MRP | 68.5 gr | 80% | 35,520 psi | 53% | 2795 fps | 95% |
| Norma MRP | 70.2 gr | 82% | 37,739 psi | 57% | 2851 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 44,802 psi | 67% | 2943 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 44,222 psi | 66% | 2930 fps | 99.6% |
| Ramshot Grand | <<locked>> | 88% | 43,149 psi | 65% | 2969 fps | 95.3% |
| Ramshot Grand | <<locked>> | 90% | 45,788 psi | 69% | 3025 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 80% | 43,656 psi | 65% | 2930 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 80% | 43,294 psi | 65% | 2920 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 38,537 psi | 58% | 2828 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 88% | 37,927 psi | 57% | 2815 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 42% | 1873 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 42% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 55,796 psi | 84% | 3094 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 55,245 psi | 83% | 3081 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 54,186 psi | 81% | 3143 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,476 psi | 80% | 3133 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,774 psi | 69% | 2972 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,208 psi | 68% | 2959 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,063 psi | 66% | 2989 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,526 psi | 65% | 2972 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,810 psi | 54% | 2835 fps | 95.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,259 psi | 53% | 2815 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 47,427 psi | 71% | 3077 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 52,576 psi | 79% | 3035 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 51,967 psi | 78% | 3022 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 45,020 psi | 67% | 2917 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 84% | 44,512 psi | 67% | 2904 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 39,929 psi | 60% | 2844 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 39,566 psi | 59% | 2835 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 48,341 psi | 72% | 2966 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,776 psi | 72% | 2953 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,050 psi | 71% | 2936 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,702 psi | 70% | 2927 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 56,188 psi | 84% | 3064 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 45,527 psi | 68% | 2920 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 80% | 44,976 psi | 67% | 2910 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,157 psi | 81% | 3091 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,766 psi | 81% | 3084 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,649 psi | 79% | 2913 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,243 psi | 78% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,151 psi | 69% | 2877 fps | 98.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,818 psi | 69% | 2871 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 39,581 psi | 59% | 2841 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 42,047 psi | 63% | 2894 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 52,257 psi | 78% | 3028 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 51,822 psi | 78% | 3018 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 46,137 psi | 69% | 2897 fps | 95.1% |
| Somchem S361 | <<locked>> | 86% | 48,907 psi | 73% | 2949 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 41,655 psi | 62% | 2890 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 41,220 psi | 62% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,811 psi | 57% | 2766 fps | 95.5% |
| Somchem S385 | <<locked>> | 80% | 37,318 psi | 56% | 2749 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 50,241 psi | 75% | 2949 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 49,661 psi | 74% | 2936 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,238 psi | 69% | 2940 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 45,687 psi | 68% | 2927 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 84% | 37,623 psi | 56% | 2749 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 86% | 39,755 psi | 60% | 2795 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 45,585 psi | 68% | 2936 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 80% | 45,223 psi | 68% | 2930 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 36,347 psi | 54% | 2776 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 35,795 psi | 54% | 2759 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 88% | 47,877 psi | 72% | 3064 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 88% | 47,181 psi | 71% | 3048 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 92% | 44,599 psi | 67% | 2972 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 47,268 psi | 71% | 3022 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 98% | 48,559 psi | 73% | 3091 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,571 psi | 68% | 2894 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,092 psi | 68% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,558 psi | 71% | 3009 fps | 98.7% |
| Winchester 760 | <<locked>> | 80% | 47,021 psi | 70% | 2995 fps | 98.5% |
| Winchester StaBALL HD | 67.8 gr | 80% | 28,703 psi | 43% | 2680 fps | 98.5% |
| Winchester StaBALL HD | 67.8 gr | 80% | 28,398 psi | 43% | 2667 fps | 98.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 40,030 psi | 60% | 2808 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,552 psi | 59% | 2799 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 163 powders for 7 mm STW loaded with the .284 | 128gr | Brenneke TUG Nature Plus. Winchester StaBALL HD delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 2,034 fps to 3,307 fps. ADI AR 2217 gives the best case fill at 100 %, and 163 of the 163 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 128.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2225 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. Winchester StaBALL HD, IMR 7828 SSC, Norma MRP rank at the top here: for 7 mm STW with the .284 | 128gr | Brenneke TUG Nature Plus 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.