Load Specifications
Load data in caliber 7 mm STW with .284 | 175gr | Remington PSP Core-Lokt bullet and 60 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 57,928 psi | 87% | 2746 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,956 psi | 85% | 2854 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 86% | 59,117 psi | 89% | 2831 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 57,682 psi | 86% | 2848 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 96% | 56,405 psi | 85% | 2828 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,753 psi | 85% | 2940 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 59,161 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 59,393 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,653 psi | 88% | 2822 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 58,102 psi | 87% | 2841 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 59,799 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,579 psi | 85% | 2822 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,913 psi | 85% | 2835 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 58,581 psi | 88% | 2920 fps | 98.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,230 psi | 81% | 2844 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,870 psi | 87% | 2808 fps | 98.8% |
| Bofors RP15 | <<locked>> | 90% | 57,276 psi | 86% | 2831 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 60,118 psi | 90% | 2890 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 58,102 psi | 87% | 2841 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 58,073 psi | 87% | 2848 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 56,608 psi | 85% | 2782 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 59,437 psi | 89% | 2822 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 59,350 psi | 89% | 2733 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 59,727 psi | 90% | 2963 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,797 psi | 57% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,363 psi | 86% | 2749 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 58,392 psi | 88% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,913 psi | 85% | 2762 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 90% | 60,133 psi | 90% | 2887 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 94% | 59,205 psi | 89% | 2766 fps | 96% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,244 psi | 81% | 2825 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 59,785 psi | 90% | 2776 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 59,596 psi | 89% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 82% | 58,900 psi | 88% | 2808 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,651 psi | 83% | 2848 fps | 100% |
| Norma MRP | <<locked>> | 86% | 58,218 psi | 87% | 2854 fps | 100% |
| Norma URP | <<locked>> | 82% | 59,930 psi | 90% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,377 psi | 86% | 2851 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 58,943 psi | 88% | 2802 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 59,959 psi | 90% | 2838 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,725 psi | 58% | 1814 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,550 psi | 85% | 2894 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 60,205 psi | 90% | 2927 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 86% | 59,553 psi | 89% | 2802 fps | 100% |
| Rottweil R 905 | <<locked>> | 86% | 58,334 psi | 87% | 2812 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 59,785 psi | 90% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 60,205 psi | 90% | 2733 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,986 psi | 87% | 2808 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 57,188 psi | 86% | 2740 fps | 99.7% |
| Somchem S365 | <<locked>> | 82% | 57,711 psi | 87% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,668 psi | 88% | 2779 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 58,624 psi | 88% | 2766 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,798 psi | 87% | 2795 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 86% | 58,088 psi | 87% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,580 psi | 86% | 2861 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 92% | 58,581 psi | 88% | 2854 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 94% | 56,434 psi | 85% | 2867 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 96% | 57,537 psi | 86% | 2927 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,289 psi | 84% | 2835 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 58,523 psi | 88% | 2779 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% | 44,425 psi | 67% | 2543 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 46,079 psi | 69% | 2667 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 80% | 48,356 psi | 72% | 2667 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 43,671 psi | 65% | 2615 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 34,853 psi | 52% | 2425 fps | 96% |
| ADI AR 2218 | <<locked>> | 94% | 45,542 psi | 68% | 2733 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 29,863 psi | 45% | 2336 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 80% | 55,651 psi | 83% | 2762 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,312 psi | 72% | 2661 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,440 psi | 67% | 2621 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,250 psi | 65% | 2559 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,376 psi | 56% | 2503 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,095 psi | 74% | 2720 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 43,526 psi | 65% | 2661 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 96% | 46,543 psi | 70% | 2713 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,989 psi | 63% | 2530 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 41,394 psi | 62% | 2559 fps | 98.7% |
| Bofors RP30 | <<locked>> | 80% | 34,969 psi | 52% | 2441 fps | 96.2% |
| Bofors RP5 | <<locked>> | 80% | 44,440 psi | 67% | 2621 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 35,346 psi | 53% | 2438 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 80% | 46,166 psi | 69% | 2612 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,382 psi | 68% | 2595 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,330 psi | 78% | 2641 fps | 100% |
| Hodgdon Retumbo | 65.6 gr | 80% | 36,492 psi | 55% | 2543 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,384 psi | 43% | 1585 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,911 psi | 81% | 2697 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,810 psi | 82% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,021 psi | 70% | 2602 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 42,482 psi | 64% | 2598 fps | 98.1% |
| IMR 7977 Enduron | <<locked>> | 92% | 55,550 psi | 83% | 2710 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,779 psi | 51% | 2431 fps | 95.5% |
| Lovex S070 | <<locked>> | 80% | 56,159 psi | 84% | 2726 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 38,247 psi | 57% | 2428 fps | 99.6% |
| Norma 204 | <<locked>> | 80% | 55,042 psi | 83% | 2753 fps | 100% |
| Norma 217 | <<locked>> | 82% | 29,617 psi | 44% | 2339 fps | 96% |
| Norma MRP | <<locked>> | 80% | 47,210 psi | 71% | 2684 fps | 100% |
| Norma URP | <<locked>> | 80% | 56,231 psi | 84% | 2740 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 42,699 psi | 64% | 2615 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 80% | 55,158 psi | 83% | 2749 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 38,363 psi | 57% | 2493 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 44% | 1624 fps | 100% |
| ReloadSwiss RS 76 | 70.2 gr | 80% | 35,766 psi | 54% | 2520 fps | 99.1% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 38,276 psi | 57% | 2543 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 49,182 psi | 74% | 2641 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 47,979 psi | 72% | 2651 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 56,159 psi | 84% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 56,333 psi | 84% | 2680 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,645 psi | 71% | 2648 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 50,024 psi | 75% | 2631 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 54,056 psi | 81% | 2694 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 48,356 psi | 72% | 2625 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 42,308 psi | 63% | 2510 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 90% | 50,546 psi | 76% | 2677 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 47,834 psi | 72% | 2628 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,789 psi | 70% | 2680 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 80% | 39,102 psi | 59% | 2513 fps | 96.9% |
| Vihtavuori N568 | <<locked>> | 84% | 39,436 psi | 59% | 2559 fps | 95.6% |
| Vihtavuori N570 | 76.6 gr | 90% | 46,383 psi | 70% | 2733 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,698 psi | 63% | 2618 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,628 psi | 67% | 2562 fps | 99.3% |
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 60 powders for 7 mm STW loaded with the .284 | 175gr | Remington PSP Core-Lokt. Hodgdon Retumbo delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,963 fps. ADI AR 2218 gives the best case fill at 100 %, and 60 of the 60 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 0.284" calls for a 1:12.0 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 | 175gr | Remington PSP Core-Lokt 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.