Load Specifications
Load data in caliber 7 mm STW with .284 | 123gr | RWS Kegelspitz bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and ADI AR 2213.
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% | 57,696 psi | 86% | 3169 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,639 psi | 88% | 3215 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,579 psi | 85% | 3261 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 58,726 psi | 88% | 3179 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 59,625 psi | 89% | 3271 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 57,537 psi | 86% | 3268 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,982 psi | 78% | 3153 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,644 psi | 70% | 3104 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 60,336 psi | 90% | 3199 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 59,292 psi | 89% | 3274 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,811 psi | 85% | 3228 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,972 psi | 88% | 3255 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,667 psi | 86% | 3264 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 59,088 psi | 89% | 3238 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,711 psi | 88% | 3297 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,854 psi | 84% | 3264 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 59,088 psi | 89% | 3215 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 56,811 psi | 85% | 3245 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,708 psi | 82% | 3228 fps | 98.3% |
| Bofors RP5 | <<locked>> | 94% | 57,667 psi | 86% | 3264 fps | 99.2% |
| Bofors RP7 | <<locked>> | 84% | 56,623 psi | 85% | 3156 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,319 psi | 86% | 3251 fps | 99% |
| Hodgdon H414 | <<locked>> | 86% | 60,234 psi | 90% | 3271 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 58,653 psi | 88% | 3222 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 57,276 psi | 86% | 3202 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 60,075 psi | 90% | 3248 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 59,698 psi | 89% | 3192 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,667 psi | 86% | 3373 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 57,276 psi | 86% | 3238 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 55% | 2087 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,639 psi | 88% | 3196 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,117 psi | 87% | 3182 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 58,813 psi | 88% | 3202 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,001 psi | 87% | 3189 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 59,422 psi | 89% | 3307 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 58,987 psi | 88% | 3182 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,261 psi | 86% | 3176 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,885 psi | 88% | 3189 fps | 100% |
| Norma 204 | <<locked>> | 88% | 60,263 psi | 90% | 3255 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 42,192 psi | 63% | 3015 fps | 97.3% |
| Norma MRP | <<locked>> | 92% | 57,856 psi | 87% | 3287 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 56,811 psi | 85% | 3196 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,463 psi | 85% | 3264 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 88% | 59,756 psi | 90% | 3255 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 59,712 psi | 90% | 3261 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,840 psi | 57% | 2136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 58,842 psi | 88% | 3235 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,334 psi | 86% | 3264 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 59,234 psi | 89% | 3369 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,201 psi | 81% | 3238 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 58,233 psi | 87% | 3163 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,666 psi | 85% | 3173 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 92% | 58,552 psi | 88% | 3245 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 56,623 psi | 85% | 3156 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,987 psi | 88% | 3182 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,261 psi | 86% | 3176 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 59,799 psi | 90% | 3222 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,479 psi | 86% | 3028 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,218 psi | 87% | 3127 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 58,102 psi | 87% | 3238 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 57,624 psi | 86% | 3156 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,784 psi | 88% | 3163 fps | 97.9% |
| Somchem S365 | <<locked>> | 88% | 57,580 psi | 86% | 3196 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 59,190 psi | 89% | 3212 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 59,103 psi | 89% | 3127 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,566 psi | 88% | 3186 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 59,016 psi | 88% | 3192 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 57,885 psi | 87% | 3189 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,348 psi | 86% | 3215 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,508 psi | 86% | 3281 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 98% | 57,798 psi | 87% | 3255 fps | 98.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,824 psi | 82% | 3245 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,494 psi | 88% | 3133 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,434 psi | 85% | 3209 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,914 psi | 87% | 3323 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 59,451 psi | 89% | 3209 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% | 35,534 psi | 53% | 2740 fps | 96.2% |
| Accurate 4350 | <<locked>> | 80% | 47,500 psi | 71% | 3031 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 49,052 psi | 74% | 3120 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 55,071 psi | 83% | 3120 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 42,409 psi | 64% | 2946 fps | 95.7% |
| ADI AR 2213 | 76.4 gr | 88% | 46,630 psi | 70% | 3064 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 45,237 psi | 68% | 3018 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 92% | 35,578 psi | 53% | 2828 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 56,550 psi | 85% | 3146 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,252 psi | 68% | 3035 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,866 psi | 79% | 3169 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 42,293 psi | 63% | 2936 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 84% | 40,770 psi | 61% | 2930 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,026 psi | 51% | 2769 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 82% | 31,792 psi | 48% | 2720 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,811 psi | 57% | 2913 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,463 psi | 83% | 3153 fps | 95.1% |
| Bofors RP15 | <<locked>> | 86% | 40,553 psi | 61% | 2927 fps | 95% |
| Bofors RP30 | <<locked>> | 94% | 44,237 psi | 66% | 3025 fps | 95.7% |
| Bofors RP5 | <<locked>> | 84% | 40,770 psi | 61% | 2930 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 49,951 psi | 75% | 3038 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 92% | 43,192 psi | 65% | 2976 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 49,081 psi | 74% | 3081 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 51,547 psi | 77% | 3100 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 86% | 46,601 psi | 70% | 3009 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 48,863 psi | 73% | 3051 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,786 psi | 64% | 2910 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 40,640 psi | 61% | 3012 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 49,255 psi | 74% | 3100 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,775 psi | 42% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,223 psi | 68% | 2956 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,198 psi | 77% | 3064 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 45,136 psi | 68% | 2969 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 47,921 psi | 72% | 3002 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 88% | 44,831 psi | 67% | 3035 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 48,718 psi | 73% | 3009 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 47,210 psi | 71% | 2995 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 34,809 psi | 52% | 2720 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 45,629 psi | 68% | 2995 fps | 96.5% |
| Norma 217 | <<locked>> | 96% | 36,637 psi | 55% | 2877 fps | 95% |
| Norma MRP | 71.7 gr | 80% | 37,217 psi | 56% | 2871 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 46,470 psi | 70% | 3015 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 44,918 psi | 67% | 3045 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 45,513 psi | 68% | 3009 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 86% | 37,507 psi | 56% | 2838 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 42% | 1919 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,601 psi | 71% | 3048 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,861 psi | 69% | 3061 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 37,565 psi | 56% | 2917 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 49,966 psi | 75% | 3159 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 54,491 psi | 82% | 3110 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 46,528 psi | 70% | 2989 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 41,684 psi | 62% | 2923 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 49,951 psi | 75% | 3038 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,718 psi | 73% | 3009 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 47,210 psi | 71% | 2995 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 56,072 psi | 84% | 3166 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,041 psi | 81% | 2982 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,863 psi | 72% | 2953 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 41,321 psi | 62% | 2917 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 54,027 psi | 81% | 3100 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 47,921 psi | 72% | 2972 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 43,497 psi | 65% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,581 psi | 59% | 2841 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 51,895 psi | 78% | 3018 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,848 psi | 72% | 3012 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 39,349 psi | 59% | 2825 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 47,340 psi | 71% | 3012 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 38,276 psi | 57% | 2858 fps | 98.9% |
| Vihtavuori N560 | 77.1 gr | 86% | 46,398 psi | 70% | 3071 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 46,862 psi | 70% | 3054 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 50,908 psi | 76% | 3173 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,413 psi | 71% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,298 psi | 74% | 3084 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,487 psi | 46% | 2769 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 41,713 psi | 63% | 2884 fps | 95.6% |
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 | 123gr | RWS Kegelspitz. Hodgdon Retumbo delivers the highest muzzle velocity at 3,373 fps; across all powders the maximum-charge window runs from 2,087 fps to 3,373 fps. ADI AR 2217 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 123.0 gr projectile in 0.284" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Norma MRP, ADI AR 2213 rank at the top here: for 7 mm STW with the .284 | 123gr | RWS Kegelspitz they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 8133 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.