Load Specifications
Load data in caliber 7 mm STW with .284 | 180gr | CutEdge MTH bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N570.
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>> | 90% | 57,276 psi | 86% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,856 psi | 87% | 2717 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 56,405 psi | 85% | 2808 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 88% | 59,117 psi | 89% | 2792 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 57,290 psi | 86% | 2805 fps | 99.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 59,785 psi | 90% | 2835 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,953 psi | 78% | 2822 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,940 psi | 81% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 59,190 psi | 89% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 58,363 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,493 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 59,321 psi | 89% | 2756 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 59,335 psi | 89% | 2825 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 55,912 psi | 84% | 2789 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 57,145 psi | 86% | 2867 fps | 98.6% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 48,182 psi | 72% | 2717 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,972 psi | 87% | 2769 fps | 98.7% |
| Bofors RP15 | <<locked>> | 92% | 56,666 psi | 85% | 2785 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 59,146 psi | 89% | 2844 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 57,493 psi | 86% | 2795 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,972 psi | 88% | 2717 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 57,377 psi | 86% | 2802 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 59,379 psi | 89% | 2772 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 56,463 psi | 85% | 2743 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 59,263 psi | 89% | 2779 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 59,292 psi | 89% | 2694 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 58,450 psi | 88% | 2910 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,579 psi | 56% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,522 psi | 86% | 2710 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 58,189 psi | 87% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,043 psi | 86% | 2723 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 92% | 59,553 psi | 89% | 2841 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 96% | 59,103 psi | 89% | 2720 fps | 95.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,153 psi | 74% | 2717 fps | 99.5% |
| Lovex S065 | <<locked>> | 82% | 57,667 psi | 86% | 2684 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 59,756 psi | 90% | 2736 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,798 psi | 88% | 2723 fps | 100% |
| Norma 204 | <<locked>> | 84% | 59,117 psi | 89% | 2772 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 49,966 psi | 75% | 2736 fps | 100% |
| Norma MRP | <<locked>> | 88% | 57,740 psi | 87% | 2812 fps | 100% |
| Norma URP | <<locked>> | 84% | 59,857 psi | 90% | 2749 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 56,811 psi | 85% | 2808 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 58,929 psi | 88% | 2762 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 59,277 psi | 89% | 2795 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,508 psi | 58% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 58,233 psi | 87% | 2743 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,753 psi | 85% | 2769 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 59,625 psi | 89% | 2904 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 58,769 psi | 88% | 2874 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 88% | 59,625 psi | 89% | 2759 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 58,088 psi | 87% | 2769 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,972 psi | 88% | 2717 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,667 psi | 86% | 2684 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 59,756 psi | 90% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 60,336 psi | 90% | 2690 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,682 psi | 86% | 2766 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 57,305 psi | 86% | 2700 fps | 99.7% |
| Somchem S365 | <<locked>> | 84% | 57,276 psi | 86% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,479 psi | 88% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,740 psi | 87% | 2694 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 58,392 psi | 88% | 2726 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 57,188 psi | 86% | 2746 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 82% | 56,739 psi | 85% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,188 psi | 86% | 2730 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,276 psi | 86% | 2818 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 94% | 57,740 psi | 87% | 2805 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 98% | 59,234 psi | 89% | 2874 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 98% | 56,260 psi | 84% | 2871 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,116 psi | 86% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 59,640 psi | 89% | 2779 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 59,379 psi | 89% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 58,392 psi | 88% | 2740 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% | 40,495 psi | 61% | 2444 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 53,838 psi | 81% | 2664 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,264 psi | 63% | 2566 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 80% | 45,005 psi | 67% | 2572 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 40,263 psi | 60% | 2516 fps | 97.5% |
| ADI AR 2217 | <<locked>> | 84% | 34,171 psi | 51% | 2379 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 96% | 44,672 psi | 67% | 2680 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 27,137 psi | 41% | 2231 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,996 psi | 78% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,875 psi | 67% | 2566 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,828 psi | 61% | 2520 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,552 psi | 59% | 2467 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,055 psi | 51% | 2405 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,541 psi | 67% | 2618 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 45,469 psi | 68% | 2674 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 98% | 44,715 psi | 67% | 2654 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 42,090 psi | 63% | 2497 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 37,985 psi | 57% | 2461 fps | 97.9% |
| Bofors RP30 | <<locked>> | 82% | 33,895 psi | 51% | 2392 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 40,828 psi | 61% | 2520 fps | 98.7% |
| Bofors RP7 | <<locked>> | 80% | 55,332 psi | 83% | 2667 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 32,314 psi | 48% | 2336 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 55,448 psi | 83% | 2720 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,873 psi | 64% | 2516 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,090 psi | 63% | 2503 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,762 psi | 73% | 2556 fps | 100% |
| Hodgdon Retumbo | 61.3 gr | 80% | 33,301 psi | 50% | 2438 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 42% | 1539 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,720 psi | 76% | 2612 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 51,097 psi | 77% | 2615 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,063 psi | 66% | 2510 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 38,957 psi | 58% | 2497 fps | 97.2% |
| IMR 7977 Enduron | <<locked>> | 94% | 55,361 psi | 83% | 2664 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 90% | 34,766 psi | 52% | 2434 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 54,157 psi | 81% | 2635 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,678 psi | 79% | 2638 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,795 psi | 52% | 2329 fps | 99% |
| Norma 204 | <<locked>> | 80% | 51,416 psi | 77% | 2661 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 28,239 psi | 42% | 2280 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 43,308 psi | 65% | 2585 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 52,562 psi | 79% | 2651 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,856 psi | 58% | 2507 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 80% | 51,401 psi | 77% | 2661 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,635 psi | 52% | 2388 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 43% | 1575 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 54,331 psi | 81% | 2690 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,823 psi | 79% | 2713 fps | 100% |
| ReloadSwiss RS 76 | 65.6 gr | 80% | 32,372 psi | 49% | 2411 fps | 98.1% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 36,898 psi | 55% | 2490 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 45,992 psi | 69% | 2549 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 44,454 psi | 67% | 2556 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 80% | 55,332 psi | 83% | 2667 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,157 psi | 81% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,678 psi | 79% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,098 psi | 80% | 2595 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,121 psi | 66% | 2552 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 46,746 psi | 70% | 2539 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 50,096 psi | 75% | 2605 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,773 psi | 67% | 2533 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 53,882 psi | 81% | 2641 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,957 psi | 58% | 2418 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 92% | 49,821 psi | 75% | 2635 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 53,258 psi | 80% | 2648 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,048 psi | 66% | 2539 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,105 psi | 65% | 2582 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 80% | 35,418 psi | 53% | 2405 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 86% | 38,218 psi | 57% | 2510 fps | 95.2% |
| Vihtavuori N570 | 73.1 gr | 92% | 45,063 psi | 68% | 2680 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,388 psi | 80% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 55,695 psi | 83% | 2723 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,130 psi | 56% | 2513 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,162 psi | 62% | 2467 fps | 98.7% |
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 72 powders for 7 mm STW loaded with the .284 | 180gr | CutEdge MTH. Hodgdon Retumbo delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,910 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 180.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, 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. Hodgdon Retumbo, ReloadSwiss RS 76, Vihtavuori N570 rank at the top here: for 7 mm STW with the .284 | 180gr | CutEdge MTH 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.