Load Specifications
Load data in caliber 7 mm STW with .284 | 160gr | THAC EDH 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 Vihtavuori N560.
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% | 58,378 psi | 88% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,146 psi | 89% | 2884 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,319 psi | 86% | 2963 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 90% | 60,046 psi | 90% | 2949 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 58,160 psi | 87% | 2959 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,318 psi | 84% | 2927 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,633 psi | 76% | 2887 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 60,031 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 59,524 psi | 89% | 2936 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,392 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 59,973 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 60,002 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,739 psi | 85% | 2949 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,563 psi | 80% | 2943 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,885 psi | 88% | 2917 fps | 98% |
| Bofors RP15 | <<locked>> | 94% | 57,537 psi | 86% | 2940 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 59,596 psi | 89% | 2995 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 58,392 psi | 88% | 2953 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,811 psi | 85% | 2828 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,914 psi | 87% | 2949 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 56,666 psi | 85% | 2884 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,074 psi | 89% | 2897 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,638 psi | 86% | 2897 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,391 psi | 85% | 2877 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 60,292 psi | 90% | 2854 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 58,813 psi | 88% | 3068 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,595 psi | 86% | 2920 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 56% | 1824 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,813 psi | 88% | 2871 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,088 psi | 87% | 2851 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,248 psi | 89% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,146 psi | 87% | 2874 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 94% | 60,278 psi | 90% | 2999 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,180 psi | 69% | 2795 fps | 98.3% |
| Lovex S065 | <<locked>> | 84% | 59,059 psi | 89% | 2848 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,421 psi | 86% | 2848 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 59,669 psi | 89% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 86% | 60,191 psi | 90% | 2930 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 46,717 psi | 70% | 2822 fps | 99.7% |
| Norma MRP | <<locked>> | 90% | 58,523 psi | 88% | 2972 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,203 psi | 86% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,334 psi | 86% | 2959 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 59,915 psi | 90% | 2923 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 60,002 psi | 90% | 2949 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,261 psi | 57% | 1867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,292 psi | 89% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,986 psi | 87% | 2936 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 59,973 psi | 90% | 3058 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 59,422 psi | 89% | 3025 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 57,116 psi | 86% | 2864 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 59,059 psi | 89% | 2927 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,811 psi | 85% | 2828 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,059 psi | 89% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,421 psi | 86% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,305 psi | 87% | 2805 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,624 psi | 88% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 58,711 psi | 88% | 2854 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 58,349 psi | 87% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,495 psi | 89% | 2894 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,234 psi | 89% | 2785 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,827 psi | 88% | 2851 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,437 psi | 89% | 2877 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 58,450 psi | 88% | 2890 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 84% | 58,030 psi | 87% | 2858 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,233 psi | 87% | 2890 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,073 psi | 87% | 2972 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 96% | 58,392 psi | 88% | 2953 fps | 99.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 59,828 psi | 90% | 3022 fps | 99.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,695 psi | 85% | 3015 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,566 psi | 88% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,898 psi | 85% | 2884 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 59,306 psi | 89% | 3002 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 59,538 psi | 89% | 2894 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% | 38,943 psi | 58% | 2536 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 51,648 psi | 77% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 43,134 psi | 65% | 2710 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 42,946 psi | 64% | 2664 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 80% | 38,377 psi | 58% | 2595 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 88% | 37,420 psi | 56% | 2572 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 84% | 29,791 psi | 45% | 2415 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,356 psi | 74% | 2782 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,931 psi | 64% | 2657 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,914 psi | 58% | 2605 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,652 psi | 56% | 2562 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,518 psi | 49% | 2484 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,076 psi | 63% | 2713 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,588 psi | 74% | 2877 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,820 psi | 73% | 2746 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 36,114 psi | 54% | 2539 fps | 96% |
| Bofors RP30 | <<locked>> | 86% | 36,999 psi | 55% | 2585 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 38,914 psi | 58% | 2605 fps | 97.1% |
| Bofors RP7 | <<locked>> | 80% | 53,388 psi | 80% | 2779 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,679 psi | 53% | 2530 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 53,011 psi | 79% | 2828 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,317 psi | 83% | 2841 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 40,930 psi | 61% | 2602 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,219 psi | 60% | 2589 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,499 psi | 70% | 2661 fps | 100% |
| Hodgdon Retumbo | 63.9 gr | 82% | 33,924 psi | 51% | 2569 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 53,548 psi | 80% | 2861 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 42% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,733 psi | 73% | 2713 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,650 psi | 82% | 2799 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,805 psi | 73% | 2720 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,380 psi | 64% | 2602 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 80% | 37,086 psi | 56% | 2575 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,666 psi | 56% | 2621 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 52,301 psi | 78% | 2749 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,546 psi | 76% | 2743 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 33,489 psi | 50% | 2418 fps | 97.8% |
| Norma 204 | <<locked>> | 80% | 49,124 psi | 74% | 2756 fps | 99.1% |
| Norma 217 | <<locked>> | 88% | 30,893 psi | 46% | 2470 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 40,988 psi | 61% | 2674 fps | 98.8% |
| Norma URP | <<locked>> | 80% | 50,154 psi | 75% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,796 psi | 55% | 2579 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 49,066 psi | 74% | 2759 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,982 psi | 49% | 2464 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 43% | 1673 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,793 psi | 78% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,154 psi | 75% | 2822 fps | 100% |
| ReloadSwiss RS 76 | 66.7 gr | 80% | 30,763 psi | 46% | 2470 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,451 psi | 61% | 2690 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 43,961 psi | 66% | 2638 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 42,322 psi | 63% | 2644 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 80% | 53,388 psi | 80% | 2779 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,301 psi | 78% | 2749 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,546 psi | 76% | 2743 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,039 psi | 77% | 2700 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,974 psi | 63% | 2638 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 44,976 psi | 67% | 2631 fps | 96.9% |
| Somchem S365 | <<locked>> | 80% | 47,761 psi | 72% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,946 psi | 64% | 2628 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 80% | 55,405 psi | 83% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,663 psi | 77% | 2753 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,318 psi | 56% | 2503 fps | 97.2% |
| Vihtavuori N170 | <<locked>> | 96% | 54,650 psi | 82% | 2835 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 51,097 psi | 77% | 2759 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,989 psi | 63% | 2635 fps | 100% |
| Vihtavuori N560 | 64.7 gr | 80% | 40,901 psi | 61% | 2664 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 84% | 38,841 psi | 58% | 2602 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 90% | 41,785 psi | 63% | 2707 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 96% | 49,095 psi | 74% | 2884 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,923 psi | 76% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,200 psi | 80% | 2831 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,519 psi | 52% | 2598 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,320 psi | 59% | 2552 fps | 97.2% |
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 73 powders for 7 mm STW loaded with the .284 | 160gr | THAC EDH. Hodgdon Retumbo delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,068 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 1:8.5 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, Vihtavuori N560 rank at the top here: for 7 mm STW with the .284 | 160gr | THAC EDH 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.