Load Specifications
Load data in caliber 7 mm STW with .284 | 130gr | Speer Hot-Cor bullet and 74 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 IMR 7828 SSC.
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>> | 94% | 59,335 psi | 89% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 60,060 psi | 90% | 3166 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 58,363 psi | 87% | 3228 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 82% | 59,872 psi | 90% | 3123 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 57,101 psi | 86% | 3163 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 94% | 59,161 psi | 89% | 3232 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,359 psi | 80% | 3120 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,993 psi | 72% | 3074 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,942 psi | 85% | 3169 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 58,450 psi | 88% | 3182 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,608 psi | 85% | 3153 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 59,335 psi | 89% | 3225 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,782 psi | 85% | 3136 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,623 psi | 85% | 3199 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,769 psi | 87% | 3228 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,782 psi | 85% | 3120 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 58,218 psi | 87% | 3205 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,347 psi | 84% | 3192 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 59,335 psi | 89% | 3225 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 57,870 psi | 87% | 3110 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 59,219 psi | 89% | 3219 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 57,740 psi | 87% | 3163 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 60,089 psi | 90% | 3179 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 58,784 psi | 88% | 3163 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,609 psi | 86% | 3146 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,348 psi | 86% | 3087 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 59,466 psi | 89% | 3337 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 58,856 psi | 88% | 3199 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 56% | 2034 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 59,886 psi | 90% | 3150 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 59,350 psi | 89% | 3136 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 56,550 psi | 85% | 3100 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 59,306 psi | 89% | 3146 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 57,058 psi | 86% | 3205 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 60,307 psi | 90% | 3133 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 58,363 psi | 87% | 3123 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 56,753 psi | 85% | 3091 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,479 psi | 86% | 3150 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 43,656 psi | 65% | 2992 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 59,422 psi | 89% | 3245 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,030 psi | 87% | 3143 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 58,131 psi | 87% | 3225 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 57,130 psi | 86% | 3150 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,956 psi | 85% | 3156 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,029 psi | 57% | 2083 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 60,336 psi | 90% | 3186 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 58,958 psi | 88% | 3219 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,782 psi | 85% | 3268 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,956 psi | 84% | 3209 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 59,582 psi | 89% | 3114 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 58,160 psi | 87% | 3133 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 60,046 psi | 90% | 3199 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 57,870 psi | 87% | 3110 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 60,307 psi | 90% | 3133 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 58,363 psi | 87% | 3123 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,784 psi | 88% | 2976 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 59,567 psi | 89% | 3084 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 59,611 psi | 89% | 3196 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 58,856 psi | 88% | 3104 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 59,988 psi | 90% | 3120 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 59,088 psi | 89% | 3146 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,869 psi | 85% | 3110 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 56,623 psi | 85% | 3022 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 59,872 psi | 90% | 3136 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 60,350 psi | 90% | 3146 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 59,146 psi | 89% | 3140 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 58,885 psi | 88% | 3169 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 58,972 psi | 88% | 3238 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 59,466 psi | 89% | 3219 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,637 psi | 85% | 3215 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 59,915 psi | 90% | 3087 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,972 psi | 87% | 3166 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 60,017 psi | 90% | 3281 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,826 psi | 85% | 3107 fps | 99.2% |
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% | 36,608 psi | 55% | 2710 fps | 97.1% |
| Accurate 4350 | <<locked>> | 80% | 48,762 psi | 73% | 2989 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 46,833 psi | 70% | 3012 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 56,362 psi | 84% | 3071 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 40,625 psi | 61% | 2848 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 44,657 psi | 67% | 2963 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 43,410 psi | 65% | 2920 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 34,272 psi | 51% | 2740 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,673 psi | 70% | 2995 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 54,360 psi | 81% | 3123 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,582 psi | 61% | 2838 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 39,233 psi | 59% | 2838 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,230 psi | 53% | 2740 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,574 psi | 46% | 2631 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,088 psi | 59% | 2884 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,287 psi | 80% | 3058 fps | 95.1% |
| Bofors RP15 | <<locked>> | 84% | 39,044 psi | 59% | 2831 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 42,641 psi | 64% | 2933 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 39,233 psi | 59% | 2838 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 50,995 psi | 76% | 2995 fps | 99% |
| Hodgdon H1000 | <<locked>> | 90% | 41,452 psi | 62% | 2881 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 50,357 psi | 75% | 3038 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 52,794 psi | 79% | 3058 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 47,732 psi | 72% | 2969 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 46,789 psi | 70% | 2949 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,903 psi | 66% | 2867 fps | 100% |
| Hodgdon Retumbo | 75.1 gr | 88% | 39,102 psi | 59% | 2917 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 50,589 psi | 76% | 3061 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 42% | 1827 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,441 psi | 70% | 2917 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,243 psi | 78% | 3018 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 46,296 psi | 69% | 2927 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 46,006 psi | 69% | 2907 fps | 95.6% |
| IMR 7828 SSC | 73.4 gr | 86% | 43,134 psi | 65% | 2940 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 49,951 psi | 75% | 2966 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 48,269 psi | 72% | 2953 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 31,546 psi | 47% | 2579 fps | 95% |
| Norma 204 | <<locked>> | 80% | 46,833 psi | 70% | 2956 fps | 97.3% |
| Norma 217 | <<locked>> | 94% | 35,389 psi | 53% | 2792 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 38,479 psi | 58% | 2844 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 47,674 psi | 71% | 2972 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 43,076 psi | 65% | 2946 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 46,746 psi | 70% | 2969 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 84% | 35,868 psi | 54% | 2743 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 43% | 1870 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,994 psi | 73% | 3009 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,253 psi | 71% | 3025 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 36,056 psi | 54% | 2822 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 47,747 psi | 72% | 3058 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 55,753 psi | 84% | 3058 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 44,773 psi | 67% | 2890 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 39,987 psi | 60% | 2825 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 50,995 psi | 76% | 2995 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,951 psi | 75% | 2966 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 48,269 psi | 72% | 2953 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 55,230 psi | 83% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,921 psi | 73% | 2910 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,653 psi | 59% | 2818 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 55,376 psi | 83% | 3051 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 45,832 psi | 69% | 2874 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 44,962 psi | 67% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,669 psi | 61% | 2808 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 53,055 psi | 80% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,037 psi | 74% | 2966 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 37,666 psi | 56% | 2730 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 48,530 psi | 73% | 2969 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 39,407 psi | 59% | 2822 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 84% | 44,411 psi | 67% | 2966 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 45,005 psi | 67% | 2959 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 48,762 psi | 73% | 3071 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,486 psi | 73% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,575 psi | 76% | 3041 fps | 99.3% |
| Winchester StaBALL HD | 70.2 gr | 80% | 31,662 psi | 47% | 2753 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 39,885 psi | 60% | 2785 fps | 95.5% |
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 79 powders for 7 mm STW loaded with the .284 | 130gr | Speer Hot-Cor. Hodgdon Retumbo delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 2,034 fps to 3,337 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, IMR 7828 SSC rank at the top here: for 7 mm STW with the .284 | 130gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.