Load Specifications
Load data in caliber 7 mm STW with .284 | 165gr | Geco SOFTPOINT bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, 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.
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>> | 88% | 56,971 psi | 85% | 2805 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 59,901 psi | 90% | 2969 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 86% | 58,073 psi | 87% | 2890 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 56,623 psi | 85% | 2907 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 98% | 59,161 psi | 89% | 2936 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,782 psi | 84% | 2992 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 58,117 psi | 87% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,349 psi | 87% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,638 psi | 86% | 2881 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,058 psi | 86% | 2900 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 58,842 psi | 88% | 2858 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 59,335 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 60,002 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,508 psi | 86% | 2972 fps | 98.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,881 psi | 79% | 2887 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,014 psi | 85% | 2864 fps | 98.3% |
| Bofors RP15 | <<locked>> | 92% | 60,162 psi | 90% | 2943 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 59,146 psi | 89% | 2953 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,058 psi | 86% | 2900 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 56,898 psi | 85% | 2904 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 59,654 psi | 89% | 2897 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,450 psi | 88% | 2881 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 58,291 psi | 87% | 2795 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 58,392 psi | 88% | 3022 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,768 psi | 57% | 1831 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 60,176 psi | 90% | 2861 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,377 psi | 86% | 2812 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 59,712 psi | 90% | 2874 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 90% | 58,987 psi | 88% | 2949 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,171 psi | 80% | 2877 fps | 99.7% |
| Lovex S070 | <<locked>> | 82% | 58,798 psi | 88% | 2838 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 58,624 psi | 88% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,957 psi | 87% | 2871 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,244 psi | 81% | 2900 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,116 psi | 86% | 2913 fps | 100% |
| Norma URP | <<locked>> | 82% | 58,929 psi | 88% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,086 psi | 84% | 2907 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 57,986 psi | 87% | 2864 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 58,943 psi | 88% | 2900 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,653 psi | 58% | 1870 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 60,104 psi | 90% | 2927 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 59,770 psi | 90% | 3012 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 58,958 psi | 88% | 2979 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 86% | 58,624 psi | 88% | 2861 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 86% | 57,537 psi | 86% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,798 psi | 88% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 59,234 psi | 89% | 2792 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,145 psi | 86% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 60,191 psi | 90% | 2854 fps | 99.7% |
| Somchem S365 | <<locked>> | 82% | 56,811 psi | 85% | 2805 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,827 psi | 87% | 2841 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,624 psi | 86% | 2825 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 56,884 psi | 85% | 2848 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 82% | 59,611 psi | 89% | 2848 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,014 psi | 85% | 2838 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,536 psi | 85% | 2917 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 92% | 57,522 psi | 86% | 2910 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 96% | 59,292 psi | 89% | 2979 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 96% | 56,507 psi | 85% | 2979 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 60,162 psi | 90% | 2792 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 59,379 psi | 89% | 2949 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,783 psi | 87% | 2841 fps | 100% |
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% | 43,555 psi | 65% | 2595 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 45,179 psi | 68% | 2720 fps | 97.2% |
| ADI AR 2209 | <<locked>> | 80% | 47,485 psi | 71% | 2720 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 42,757 psi | 64% | 2661 fps | 97.7% |
| ADI AR 2217 | <<locked>> | 82% | 34,127 psi | 51% | 2464 fps | 95% |
| ADI AR 2218 | <<locked>> | 96% | 48,022 psi | 72% | 2844 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 29,211 psi | 44% | 2372 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 54,491 psi | 82% | 2822 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,456 psi | 71% | 2713 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,511 psi | 65% | 2671 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,235 psi | 63% | 2612 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,564 psi | 55% | 2549 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,993 psi | 72% | 2776 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 45,730 psi | 69% | 2766 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 49,023 psi | 73% | 2822 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 44,150 psi | 66% | 2635 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 40,582 psi | 61% | 2608 fps | 98.1% |
| Bofors RP30 | <<locked>> | 80% | 34,156 psi | 51% | 2480 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 43,511 psi | 65% | 2671 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 34,621 psi | 52% | 2480 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 80% | 45,266 psi | 68% | 2661 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,556 psi | 67% | 2648 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,314 psi | 77% | 2700 fps | 100% |
| Hodgdon Retumbo | 67.2 gr | 80% | 35,679 psi | 53% | 2585 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 42% | 1637 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,084 psi | 80% | 2759 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,679 psi | 80% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,296 psi | 69% | 2654 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 80% | 41,568 psi | 62% | 2644 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 88% | 35,288 psi | 53% | 2526 fps | 95.5% |
| Lovex S070 | <<locked>> | 80% | 55,347 psi | 83% | 2789 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,434 psi | 56% | 2474 fps | 99.2% |
| Norma 204 | <<locked>> | 80% | 54,244 psi | 81% | 2812 fps | 99.9% |
| Norma 217 | <<locked>> | 84% | 30,980 psi | 46% | 2434 fps | 96% |
| Norma MRP | <<locked>> | 80% | 46,282 psi | 69% | 2740 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 55,347 psi | 83% | 2805 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,626 psi | 62% | 2657 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 80% | 54,331 psi | 81% | 2812 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,507 psi | 56% | 2539 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 44% | 1677 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 55,883 psi | 84% | 2871 fps | 100% |
| ReloadSwiss RS 76 | 72 gr | 80% | 35,056 psi | 53% | 2562 fps | 98.4% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 40,263 psi | 60% | 2648 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 48,211 psi | 72% | 2694 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 47,108 psi | 71% | 2703 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 55,347 psi | 83% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 55,477 psi | 83% | 2740 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,760 psi | 70% | 2700 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 49,211 psi | 74% | 2684 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 53,069 psi | 80% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,442 psi | 71% | 2680 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 41,510 psi | 62% | 2559 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 53,272 psi | 80% | 2792 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 55,869 psi | 84% | 2795 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 46,963 psi | 70% | 2687 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,934 psi | 69% | 2733 fps | 98% |
| Vihtavuori N565 | <<locked>> | 80% | 38,189 psi | 57% | 2552 fps | 96% |
| Vihtavuori N568 | <<locked>> | 86% | 41,379 psi | 62% | 2664 fps | 95.7% |
| Vihtavuori N570 | 80.3 gr | 92% | 48,907 psi | 73% | 2844 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 56,159 psi | 84% | 2743 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,625 psi | 61% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,743 psi | 66% | 2612 fps | 98.8% |
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 62 powders for 7 mm STW loaded with the .284 | 165gr | Geco SOFTPOINT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,022 fps. ADI AR 2218 gives the best case fill at 100 %, and 62 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.284" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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 N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 165gr | Geco SOFTPOINT 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.