Load Specifications
Load data in caliber 7 mm STW with .284 | 130gr | Barnes X BT bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Hodgdon Retumbo and ReloadSwiss RS 76.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 58,015 psi | 87% | 3097 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 58,595 psi | 88% | 3133 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 60,017 psi | 90% | 3245 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 58,595 psi | 88% | 3179 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 92% | 56,681 psi | 85% | 3182 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,810 psi | 82% | 3133 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,806 psi | 75% | 3100 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,421 psi | 88% | 3179 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 59,988 psi | 90% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,204 psi | 87% | 3166 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,232 psi | 86% | 3182 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 58,610 psi | 88% | 3156 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 58,218 psi | 87% | 3219 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 59,843 psi | 90% | 3251 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,841 psi | 87% | 3123 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 60,060 psi | 90% | 3225 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 58,218 psi | 87% | 3215 fps | 99.1% |
| Bofors RP5 | <<locked>> | 92% | 57,232 psi | 86% | 3182 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 59,553 psi | 89% | 3123 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 56,550 psi | 85% | 3166 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 59,321 psi | 89% | 3179 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 57,754 psi | 87% | 3127 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 60,249 psi | 90% | 3176 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 59,117 psi | 89% | 3159 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 59,161 psi | 89% | 3100 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,913 psi | 85% | 3291 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 56,130 psi | 84% | 3150 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 56% | 2024 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,769 psi | 87% | 3104 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,188 psi | 86% | 3087 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 58,479 psi | 88% | 3117 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,130 psi | 86% | 3097 fps | 98% |
| IMR 7828 SSC | <<locked>> | 94% | 58,421 psi | 88% | 3219 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,498 psi | 68% | 3002 fps | 96.4% |
| Lovex S065 | <<locked>> | 84% | 58,421 psi | 88% | 3094 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,942 psi | 85% | 3091 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 59,422 psi | 89% | 3117 fps | 100% |
| Norma 204 | <<locked>> | 86% | 59,016 psi | 88% | 3159 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 46,006 psi | 69% | 3035 fps | 98.6% |
| Norma MRP | <<locked>> | 90% | 57,159 psi | 86% | 3202 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 59,915 psi | 90% | 3163 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 59,756 psi | 90% | 3245 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 58,856 psi | 88% | 3166 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,523 psi | 88% | 3173 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 58% | 2073 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,276 psi | 87% | 3146 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 60,350 psi | 90% | 3228 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,421 psi | 88% | 3287 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 58,015 psi | 87% | 3238 fps | 98% |
| Rottweil R 904 | <<locked>> | 90% | 59,437 psi | 89% | 3143 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 57,986 psi | 87% | 3159 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 59,553 psi | 89% | 3123 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,421 psi | 88% | 3094 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,942 psi | 85% | 3091 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 60,133 psi | 90% | 2982 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,711 psi | 87% | 3041 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,537 psi | 86% | 3153 fps | 99.3% |
| Somchem S361 | <<locked>> | 88% | 57,812 psi | 87% | 3074 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 57,305 psi | 86% | 3114 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,798 psi | 88% | 3130 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 58,378 psi | 88% | 3031 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,783 psi | 87% | 3097 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,305 psi | 87% | 3104 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 57,305 psi | 86% | 3100 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,479 psi | 86% | 3140 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,652 psi | 85% | 3192 fps | 98% |
| Vihtavuori N565 | <<locked>> | 96% | 57,624 psi | 86% | 3182 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 58,378 psi | 88% | 3235 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,305 psi | 86% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 59,538 psi | 89% | 3182 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,450 psi | 86% | 3245 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,595 psi | 88% | 3123 fps | 99.3% |
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 3100 | <<locked>> | 80% | 39,552 psi | 59% | 2762 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 51,459 psi | 77% | 3022 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 49,052 psi | 74% | 3051 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 42,424 psi | 64% | 2874 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 84% | 43,497 psi | 65% | 2923 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 92% | 42,366 psi | 64% | 2887 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 88% | 34,185 psi | 51% | 2726 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,312 psi | 72% | 3018 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 55,883 psi | 84% | 3136 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,482 psi | 64% | 2871 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,624 psi | 58% | 2815 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,449 psi | 56% | 2782 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,822 psi | 49% | 2690 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,597 psi | 62% | 2933 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,476 psi | 82% | 3064 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 41,104 psi | 62% | 2867 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 42,032 psi | 63% | 2913 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 38,624 psi | 58% | 2815 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 52,808 psi | 79% | 3012 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 88% | 40,466 psi | 61% | 2844 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 52,141 psi | 78% | 3058 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 54,186 psi | 81% | 3068 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 46,195 psi | 69% | 2927 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 45,498 psi | 68% | 2913 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,035 psi | 69% | 2897 fps | 100% |
| Hodgdon Retumbo | 71.5 gr | 86% | 38,725 psi | 58% | 2897 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 52,344 psi | 78% | 3084 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 42% | 1821 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,095 psi | 72% | 2936 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,679 psi | 80% | 3031 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 48,573 psi | 73% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 44,686 psi | 67% | 2864 fps | 95% |
| IMR 7828 SSC | <<locked>> | 86% | 44,918 psi | 67% | 2966 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 42,670 psi | 64% | 2940 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 51,924 psi | 78% | 2986 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 50,401 psi | 76% | 2976 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 34,418 psi | 52% | 2641 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 48,515 psi | 73% | 2979 fps | 97.6% |
| Norma 217 | <<locked>> | 92% | 35,607 psi | 53% | 2792 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 40,698 psi | 61% | 2890 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 49,676 psi | 74% | 2999 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 41,930 psi | 63% | 2907 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 48,559 psi | 73% | 2989 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 38,174 psi | 57% | 2792 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,863 psi | 43% | 1864 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,198 psi | 77% | 3035 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,907 psi | 73% | 3048 fps | 100% |
| ReloadSwiss RS 76 | 74.7 gr | 84% | 35,781 psi | 54% | 2805 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 46,456 psi | 70% | 3028 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 43,656 psi | 65% | 2851 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 42,076 psi | 63% | 2861 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 52,808 psi | 79% | 3012 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,924 psi | 78% | 2986 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 50,401 psi | 76% | 2976 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 56,608 psi | 85% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,952 psi | 76% | 2930 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,727 psi | 63% | 2854 fps | 96.1% |
| Somchem S361 | <<locked>> | 82% | 47,645 psi | 71% | 2897 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 47,152 psi | 71% | 2956 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,873 psi | 64% | 2844 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 54,969 psi | 82% | 2982 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,952 psi | 76% | 2989 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,347 psi | 56% | 2707 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 50,662 psi | 76% | 2995 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,076 psi | 63% | 2867 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 46,340 psi | 69% | 2999 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 44,411 psi | 67% | 2936 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 50,720 psi | 76% | 3104 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,067 psi | 75% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,344 psi | 78% | 3061 fps | 99.4% |
| Winchester StaBALL HD | 68.3 gr | 80% | 34,011 psi | 51% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,218 psi | 59% | 2759 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 72 powders for 7 mm STW loaded with the .284 | 130gr | Barnes X BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,291 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,291 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 130gr | Barnes X BT 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.