Load Specifications
Load data in caliber 7 mm STW with .284 | 161gr | SUS-TAC LRT 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% | 58,769 psi | 88% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,466 psi | 89% | 2881 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,450 psi | 86% | 2956 fps | 99% |
| ADI AR 2209 | <<locked>> | 90% | 60,162 psi | 90% | 2943 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 58,247 psi | 87% | 2953 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,449 psi | 85% | 2923 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,995 psi | 76% | 2884 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,594 psi | 85% | 2881 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 59,640 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,508 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 60,089 psi | 90% | 2907 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 60,162 psi | 90% | 2979 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,145 psi | 86% | 2949 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,737 psi | 81% | 2943 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 59,219 psi | 89% | 2913 fps | 98.1% |
| Bofors RP15 | <<locked>> | 94% | 57,653 psi | 86% | 2933 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 59,973 psi | 90% | 2989 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 58,508 psi | 88% | 2949 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,826 psi | 85% | 2825 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,334 psi | 87% | 2949 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,000 psi | 85% | 2881 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,132 psi | 89% | 2890 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,740 psi | 87% | 2890 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,724 psi | 85% | 2874 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,652 psi | 85% | 2802 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 58,943 psi | 88% | 3061 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,696 psi | 86% | 2917 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,420 psi | 56% | 1818 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,117 psi | 89% | 2867 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,363 psi | 87% | 2848 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,596 psi | 89% | 2867 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,233 psi | 87% | 2871 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 56,507 psi | 85% | 2936 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,499 psi | 70% | 2795 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 59,379 psi | 89% | 2844 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,711 psi | 87% | 2844 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 60,017 psi | 90% | 2871 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,608 psi | 85% | 2871 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 47,065 psi | 71% | 2822 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 58,624 psi | 88% | 2966 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,537 psi | 86% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,450 psi | 86% | 2956 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 60,263 psi | 90% | 2920 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,159 psi | 84% | 2887 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 57% | 1860 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,625 psi | 89% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,073 psi | 87% | 2930 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,840 psi | 84% | 2995 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 59,596 psi | 89% | 3018 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 57,188 psi | 86% | 2858 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 59,422 psi | 89% | 2923 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,826 psi | 85% | 2825 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,379 psi | 89% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,711 psi | 87% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,378 psi | 88% | 2799 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 59,001 psi | 88% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 58,784 psi | 88% | 2848 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 58,726 psi | 88% | 2861 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,872 psi | 90% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,306 psi | 89% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 59,161 psi | 89% | 2848 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,538 psi | 89% | 2874 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 58,537 psi | 88% | 2887 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 84% | 58,334 psi | 87% | 2854 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,566 psi | 88% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,160 psi | 87% | 2966 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 96% | 58,755 psi | 88% | 2953 fps | 99.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 60,234 psi | 90% | 3018 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,913 psi | 85% | 3012 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,668 psi | 88% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,000 psi | 85% | 2881 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 59,857 psi | 90% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 59,886 psi | 90% | 2890 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% | 39,175 psi | 59% | 2536 fps | 99.2% |
| Accurate 4350 | <<locked>> | 80% | 51,924 psi | 78% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 40,306 psi | 60% | 2644 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 43,018 psi | 64% | 2661 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 80% | 38,450 psi | 58% | 2592 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 88% | 37,492 psi | 56% | 2566 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 84% | 29,849 psi | 45% | 2411 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,647 psi | 74% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,149 psi | 65% | 2654 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,957 psi | 58% | 2602 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,724 psi | 57% | 2559 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,576 psi | 49% | 2480 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,192 psi | 63% | 2710 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,951 psi | 75% | 2874 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 49,052 psi | 74% | 2743 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 36,361 psi | 55% | 2539 fps | 96.2% |
| Bofors RP30 | <<locked>> | 86% | 37,057 psi | 56% | 2582 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 38,957 psi | 58% | 2602 fps | 97.2% |
| Bofors RP7 | <<locked>> | 80% | 53,447 psi | 80% | 2772 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,708 psi | 54% | 2526 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 53,287 psi | 80% | 2825 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,361 psi | 83% | 2835 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 41,002 psi | 61% | 2598 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,292 psi | 60% | 2582 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,789 psi | 70% | 2657 fps | 100% |
| Hodgdon Retumbo | 63.9 gr | 82% | 34,156 psi | 51% | 2566 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 53,650 psi | 80% | 2854 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 42% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,747 psi | 73% | 2707 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,708 psi | 82% | 2792 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,095 psi | 74% | 2717 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,424 psi | 64% | 2595 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 80% | 37,159 psi | 56% | 2572 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,782 psi | 57% | 2618 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 52,330 psi | 78% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,821 psi | 76% | 2740 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,692 psi | 51% | 2415 fps | 97.9% |
| Norma 204 | <<locked>> | 80% | 49,400 psi | 74% | 2753 fps | 99.1% |
| Norma 217 | <<locked>> | 88% | 30,980 psi | 46% | 2464 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 41,278 psi | 62% | 2674 fps | 98.9% |
| Norma URP | <<locked>> | 80% | 50,444 psi | 76% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,883 psi | 55% | 2575 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 49,371 psi | 74% | 2759 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,069 psi | 50% | 2461 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 43% | 1667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,895 psi | 78% | 2792 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,241 psi | 75% | 2815 fps | 100% |
| ReloadSwiss RS 76 | 66.7 gr | 80% | 30,995 psi | 46% | 2474 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,596 psi | 61% | 2687 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 44,208 psi | 66% | 2638 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,569 psi | 64% | 2641 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 53,447 psi | 80% | 2772 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,330 psi | 78% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,821 psi | 76% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,285 psi | 77% | 2697 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,235 psi | 63% | 2638 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 45,063 psi | 68% | 2625 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 47,805 psi | 72% | 2710 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,004 psi | 64% | 2621 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 80% | 55,680 psi | 83% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,938 psi | 78% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,536 psi | 56% | 2500 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 96% | 54,737 psi | 82% | 2828 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 51,169 psi | 77% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,235 psi | 63% | 2635 fps | 100% |
| Vihtavuori N560 | 64.7 gr | 80% | 41,191 psi | 62% | 2664 fps | 96% |
| Vihtavuori N565 | <<locked>> | 84% | 38,928 psi | 58% | 2598 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 90% | 41,887 psi | 63% | 2703 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 96% | 49,269 psi | 74% | 2881 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,184 psi | 77% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,519 psi | 80% | 2828 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,809 psi | 52% | 2598 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,537 psi | 59% | 2552 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 78 powders for 7 mm STW loaded with the .284 | 161gr | SUS-TAC LRT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,061 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 161.0 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 N560 rank at the top here: for 7 mm STW with the .284 | 161gr | SUS-TAC LRT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, 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.