Load Specifications
Load data in caliber 7 mm STW with .287 | 175gr | Woodleigh PP SN bullet and 61 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% | 57,392 psi | 86% | 2740 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,434 psi | 85% | 2841 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 86% | 58,566 psi | 88% | 2822 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 57,145 psi | 86% | 2838 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 59,698 psi | 89% | 2871 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,130 psi | 84% | 2930 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 58,668 psi | 88% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,784 psi | 88% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,146 psi | 87% | 2812 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,580 psi | 86% | 2835 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 59,292 psi | 89% | 2789 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 59,930 psi | 90% | 2864 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,347 psi | 84% | 2828 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,870 psi | 87% | 2907 fps | 98.7% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 53,359 psi | 80% | 2835 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,522 psi | 86% | 2802 fps | 98.7% |
| Bofors RP15 | <<locked>> | 90% | 56,768 psi | 85% | 2822 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 59,625 psi | 89% | 2884 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,580 psi | 86% | 2835 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,348 psi | 86% | 2838 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 60,162 psi | 90% | 2831 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,943 psi | 88% | 2815 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 59,001 psi | 88% | 2730 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 59,146 psi | 89% | 2953 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,826 psi | 57% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,043 psi | 86% | 2743 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,827 psi | 87% | 2743 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 60,060 psi | 90% | 2802 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 90% | 59,364 psi | 89% | 2877 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 94% | 58,552 psi | 88% | 2753 fps | 95.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,780 psi | 81% | 2815 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 59,219 psi | 89% | 2769 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 59,074 psi | 89% | 2759 fps | 100% |
| Norma 204 | <<locked>> | 82% | 58,407 psi | 88% | 2802 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,882 psi | 82% | 2838 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,682 psi | 86% | 2848 fps | 100% |
| Norma URP | <<locked>> | 82% | 59,364 psi | 89% | 2782 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,797 psi | 85% | 2844 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 58,407 psi | 88% | 2792 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 59,451 psi | 89% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,754 psi | 58% | 1811 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,753 psi | 84% | 2884 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 59,509 psi | 89% | 2917 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 86% | 59,030 psi | 88% | 2792 fps | 100% |
| Rottweil R 905 | <<locked>> | 86% | 58,030 psi | 87% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 59,219 psi | 89% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 59,727 psi | 90% | 2723 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,638 psi | 86% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,739 psi | 85% | 2730 fps | 99.6% |
| Somchem S365 | <<locked>> | 82% | 57,363 psi | 86% | 2736 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,146 psi | 87% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 58,160 psi | 87% | 2759 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,392 psi | 86% | 2785 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 82% | 60,191 psi | 90% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,479 psi | 86% | 2769 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,072 psi | 86% | 2851 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 92% | 58,117 psi | 87% | 2844 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 59,828 psi | 90% | 2917 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 96% | 57,072 psi | 86% | 2917 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 60,002 psi | 90% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 58,059 psi | 87% | 2772 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% | 43,918 psi | 66% | 2536 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 45,600 psi | 68% | 2661 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 80% | 48,037 psi | 72% | 2661 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 43,134 psi | 65% | 2605 fps | 98.2% |
| ADI AR 2217 | <<locked>> | 82% | 34,461 psi | 52% | 2415 fps | 95.8% |
| ADI AR 2218 | <<locked>> | 94% | 44,991 psi | 67% | 2720 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 29,617 psi | 44% | 2329 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 55,042 psi | 83% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,790 psi | 72% | 2651 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,903 psi | 66% | 2608 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,699 psi | 64% | 2549 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,072 psi | 56% | 2497 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,559 psi | 73% | 2713 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 42,902 psi | 64% | 2651 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 96% | 45,934 psi | 69% | 2700 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,785 psi | 63% | 2523 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 40,901 psi | 61% | 2549 fps | 98.5% |
| Bofors RP30 | <<locked>> | 80% | 34,505 psi | 52% | 2431 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 43,903 psi | 66% | 2608 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 80% | 35,070 psi | 53% | 2431 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 80% | 45,847 psi | 69% | 2605 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,918 psi | 67% | 2589 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,735 psi | 78% | 2635 fps | 100% |
| Hodgdon Retumbo | 65.1 gr | 80% | 36,201 psi | 54% | 2536 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,340 psi | 42% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,606 psi | 80% | 2694 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,259 psi | 81% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,731 psi | 70% | 2595 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 80% | 41,959 psi | 63% | 2589 fps | 98% |
| IMR 7977 Enduron | <<locked>> | 92% | 54,940 psi | 82% | 2697 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,344 psi | 50% | 2421 fps | 95.3% |
| Lovex S070 | <<locked>> | 80% | 55,637 psi | 83% | 2717 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,898 psi | 57% | 2421 fps | 99.5% |
| Norma 204 | <<locked>> | 80% | 54,520 psi | 82% | 2743 fps | 100% |
| Norma 217 | <<locked>> | 82% | 29,182 psi | 44% | 2326 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 46,847 psi | 70% | 2680 fps | 100% |
| Norma URP | <<locked>> | 80% | 55,666 psi | 83% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 42,148 psi | 63% | 2602 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 80% | 54,636 psi | 82% | 2740 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,884 psi | 57% | 2484 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 44% | 1621 fps | 100% |
| ReloadSwiss RS 76 | 69.7 gr | 80% | 35,491 psi | 53% | 2513 fps | 99% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 37,652 psi | 56% | 2530 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 48,689 psi | 73% | 2631 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 47,427 psi | 71% | 2641 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 55,637 psi | 83% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 56,057 psi | 84% | 2674 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,108 psi | 71% | 2638 fps | 99.6% |
| Somchem S361 | <<locked>> | 80% | 49,777 psi | 75% | 2625 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 53,693 psi | 80% | 2690 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,848 psi | 72% | 2618 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 41,843 psi | 63% | 2503 fps | 99.2% |
| Vihtavuori N170 | <<locked>> | 90% | 50,140 psi | 75% | 2671 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 56,318 psi | 84% | 2726 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 47,471 psi | 71% | 2621 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,470 psi | 70% | 2677 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 80% | 38,624 psi | 58% | 2503 fps | 96.7% |
| Vihtavuori N568 | <<locked>> | 84% | 38,972 psi | 58% | 2549 fps | 95.4% |
| Vihtavuori N570 | 76 gr | 90% | 45,890 psi | 69% | 2723 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,075 psi | 62% | 2605 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,150 psi | 66% | 2552 fps | 99.2% |
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 68 powders for 7 mm STW loaded with the .287 | 175gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,953 fps. Accurate 8700 gives the best case fill at 100 %, and 68 of the 68 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 175.0 gr projectile in 0.287" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .287 | 175gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, Hodgdon US 869, Lovex D100 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.