Load Specifications
Load data in caliber 7 mm STW with .284 | 160gr | CutEdge MTH bullet and 73 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 Accurate MAGPRO.
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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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>> | 92% | 58,407 psi | 88% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,001 psi | 88% | 2887 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,522 psi | 86% | 2969 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 90% | 60,336 psi | 90% | 2959 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 58,566 psi | 88% | 2972 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,739 psi | 85% | 2940 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,111 psi | 77% | 2900 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,550 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 59,727 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,726 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 60,336 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 60,307 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,203 psi | 86% | 2959 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,099 psi | 81% | 2956 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 59,335 psi | 89% | 2930 fps | 98.1% |
| Bofors RP15 | <<locked>> | 94% | 57,812 psi | 87% | 2949 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 59,886 psi | 90% | 3002 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 58,726 psi | 88% | 2966 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,898 psi | 85% | 2841 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,421 psi | 88% | 2963 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 56,956 psi | 85% | 2894 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,248 psi | 89% | 2907 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,986 psi | 87% | 2907 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,797 psi | 85% | 2890 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,652 psi | 85% | 2815 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 59,393 psi | 89% | 3081 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,783 psi | 87% | 2930 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 56% | 1831 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,146 psi | 89% | 2881 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,320 psi | 87% | 2861 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,437 psi | 89% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,334 psi | 87% | 2887 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 56,565 psi | 85% | 2949 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,369 psi | 70% | 2802 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 59,103 psi | 89% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,392 psi | 86% | 2854 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 59,698 psi | 89% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,536 psi | 85% | 2884 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 46,934 psi | 70% | 2828 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 58,798 psi | 88% | 2982 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,290 psi | 86% | 2871 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,696 psi | 86% | 2972 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 60,365 psi | 90% | 2936 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,086 psi | 84% | 2900 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,305 psi | 57% | 1877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,393 psi | 89% | 2910 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,262 psi | 87% | 2946 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,260 psi | 84% | 3012 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 60,031 psi | 90% | 3035 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 57,145 psi | 86% | 2874 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 59,495 psi | 89% | 2940 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,898 psi | 85% | 2841 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,103 psi | 89% | 2854 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,392 psi | 86% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,233 psi | 87% | 2812 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 59,074 psi | 89% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 58,885 psi | 88% | 2864 fps | 99.4% |
| Somchem S365 | <<locked>> | 86% | 58,653 psi | 88% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,770 psi | 90% | 2907 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,335 psi | 89% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,929 psi | 88% | 2861 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,669 psi | 89% | 2890 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 58,508 psi | 88% | 2900 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 84% | 58,218 psi | 87% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,247 psi | 87% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,349 psi | 87% | 2982 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 96% | 58,610 psi | 88% | 2963 fps | 99.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 60,307 psi | 90% | 3035 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,217 psi | 86% | 3028 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,726 psi | 88% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,956 psi | 85% | 2894 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 60,002 psi | 90% | 3012 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 60,046 psi | 90% | 2907 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% | 38,566 psi | 58% | 2536 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 51,532 psi | 77% | 2782 fps | 100% |
| Accurate MAGPRO | 69.2 gr | 82% | 43,105 psi | 65% | 2717 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 42,873 psi | 64% | 2671 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 80% | 38,348 psi | 57% | 2602 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 88% | 37,362 psi | 56% | 2575 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 29,399 psi | 44% | 2408 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,443 psi | 74% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,960 psi | 64% | 2667 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,812 psi | 58% | 2612 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,463 psi | 56% | 2562 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,198 psi | 48% | 2480 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,872 psi | 63% | 2713 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 50,053 psi | 75% | 2887 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,905 psi | 69% | 2697 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 36,013 psi | 54% | 2543 fps | 96.1% |
| Bofors RP30 | <<locked>> | 86% | 36,709 psi | 55% | 2582 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 38,812 psi | 58% | 2612 fps | 97.2% |
| Bofors RP7 | <<locked>> | 80% | 53,258 psi | 80% | 2785 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,433 psi | 53% | 2530 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 53,084 psi | 80% | 2835 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,506 psi | 83% | 2851 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 40,930 psi | 61% | 2608 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,205 psi | 60% | 2595 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,427 psi | 70% | 2667 fps | 100% |
| Hodgdon Retumbo | 65.4 gr | 82% | 33,721 psi | 51% | 2569 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 53,722 psi | 81% | 2871 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 42% | 1640 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,646 psi | 73% | 2720 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,694 psi | 82% | 2808 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,791 psi | 73% | 2726 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,235 psi | 63% | 2608 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 80% | 37,043 psi | 56% | 2582 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,637 psi | 56% | 2621 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 52,141 psi | 78% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,560 psi | 76% | 2749 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,982 psi | 49% | 2411 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 49,182 psi | 74% | 2766 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 30,574 psi | 46% | 2464 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 40,901 psi | 61% | 2677 fps | 98.9% |
| Norma URP | <<locked>> | 80% | 50,241 psi | 75% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,680 psi | 55% | 2585 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 49,110 psi | 74% | 2769 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,677 psi | 49% | 2461 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 43% | 1680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,721 psi | 78% | 2805 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,212 psi | 75% | 2828 fps | 100% |
| ReloadSwiss RS 76 | 68.3 gr | 80% | 30,530 psi | 46% | 2470 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,524 psi | 61% | 2694 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 44,034 psi | 66% | 2648 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,322 psi | 63% | 2651 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 53,258 psi | 80% | 2785 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,141 psi | 78% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,560 psi | 76% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,981 psi | 76% | 2707 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,989 psi | 63% | 2644 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 44,831 psi | 67% | 2635 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 47,587 psi | 71% | 2720 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,801 psi | 64% | 2631 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 80% | 55,506 psi | 83% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,750 psi | 78% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,188 psi | 56% | 2507 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 96% | 54,723 psi | 82% | 2844 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 51,082 psi | 77% | 2762 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,655 psi | 62% | 2635 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,828 psi | 61% | 2667 fps | 96% |
| Vihtavuori N565 | <<locked>> | 84% | 38,653 psi | 58% | 2602 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 90% | 41,785 psi | 63% | 2710 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 96% | 49,342 psi | 74% | 2894 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,097 psi | 77% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,316 psi | 80% | 2838 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,447 psi | 52% | 2595 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,189 psi | 59% | 2556 fps | 97.3% |
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 73 powders for 7 mm STW loaded with the .284 | 160gr | CutEdge MTH. Hodgdon Retumbo delivers the highest muzzle velocity at 3,081 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,081 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 160.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Accurate MAGPRO rank at the top here: for 7 mm STW with the .284 | 160gr | 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.