Load Specifications
Load data in caliber 7 mm STW with .284 | 160gr | Barnes TSX FB 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% | 58,798 psi | 88% | 2867 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,437 psi | 89% | 2894 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,885 psi | 87% | 2976 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 88% | 56,739 psi | 85% | 2907 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 58,958 psi | 88% | 2976 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 57,058 psi | 86% | 2943 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,430 psi | 77% | 2900 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,014 psi | 85% | 2900 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 60,104 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 59,103 psi | 89% | 2969 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,768 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,898 psi | 85% | 2946 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,609 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,418 psi | 82% | 2959 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 59,828 psi | 90% | 2936 fps | 98.2% |
| Bofors RP15 | <<locked>> | 94% | 58,189 psi | 87% | 2956 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,492 psi | 85% | 2953 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 59,103 psi | 89% | 2969 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,058 psi | 86% | 2841 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,755 psi | 88% | 2969 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,145 psi | 86% | 2897 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,437 psi | 89% | 2910 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,102 psi | 87% | 2910 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,130 psi | 86% | 2894 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,058 psi | 86% | 2818 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 59,785 psi | 90% | 3084 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,160 psi | 87% | 2933 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 56% | 1834 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,263 psi | 89% | 2884 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,494 psi | 88% | 2864 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,872 psi | 90% | 2887 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,682 psi | 88% | 2890 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 56,956 psi | 85% | 2956 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,688 psi | 70% | 2805 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 59,524 psi | 89% | 2861 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,783 psi | 87% | 2861 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 60,031 psi | 90% | 2887 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,913 psi | 85% | 2890 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 47,485 psi | 71% | 2835 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 59,190 psi | 89% | 2986 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,725 psi | 87% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 58,131 psi | 87% | 2976 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 56,695 psi | 85% | 2884 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,449 psi | 85% | 2904 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,232 psi | 57% | 1877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,828 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,668 psi | 88% | 2949 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,608 psi | 85% | 3015 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,883 psi | 84% | 2972 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 88% | 57,493 psi | 86% | 2877 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 90% | 59,640 psi | 89% | 2940 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,058 psi | 86% | 2841 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,524 psi | 89% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,783 psi | 87% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,624 psi | 88% | 2818 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 59,219 psi | 89% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 59,205 psi | 89% | 2867 fps | 99.4% |
| Somchem S365 | <<locked>> | 86% | 58,827 psi | 88% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 60,147 psi | 90% | 2910 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,480 psi | 89% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 59,350 psi | 89% | 2867 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 60,017 psi | 90% | 2894 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 59,030 psi | 88% | 2910 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 84% | 58,595 psi | 88% | 2874 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,682 psi | 88% | 2904 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,711 psi | 88% | 2986 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 96% | 59,219 psi | 89% | 2972 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 56,565 psi | 85% | 2976 fps | 98.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,566 psi | 86% | 3031 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 59,088 psi | 89% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,363 psi | 86% | 2900 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,188 psi | 84% | 2959 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,159 psi | 84% | 2854 fps | 99.9% |
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% | 38,754 psi | 58% | 2539 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 51,706 psi | 78% | 2785 fps | 100% |
| Accurate MAGPRO | 67.8 gr | 80% | 40,190 psi | 60% | 2651 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 43,221 psi | 65% | 2674 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 80% | 38,522 psi | 58% | 2605 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 37,478 psi | 56% | 2579 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 29,660 psi | 44% | 2415 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,864 psi | 75% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,120 psi | 65% | 2667 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,972 psi | 58% | 2612 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,652 psi | 56% | 2566 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,503 psi | 49% | 2487 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,250 psi | 63% | 2717 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 46,659 psi | 70% | 2825 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,166 psi | 69% | 2703 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 36,187 psi | 54% | 2546 fps | 96.1% |
| Bofors RP30 | <<locked>> | 86% | 37,043 psi | 56% | 2589 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 38,972 psi | 58% | 2612 fps | 97.3% |
| Bofors RP7 | <<locked>> | 80% | 53,447 psi | 80% | 2789 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,723 psi | 54% | 2539 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 53,476 psi | 80% | 2841 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,695 psi | 83% | 2854 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 41,060 psi | 62% | 2612 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,364 psi | 61% | 2595 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,630 psi | 70% | 2671 fps | 100% |
| Hodgdon Retumbo | 65.8 gr | 82% | 34,026 psi | 51% | 2575 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 54,114 psi | 81% | 2874 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 42% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,008 psi | 73% | 2726 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,056 psi | 83% | 2815 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,008 psi | 73% | 2730 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,554 psi | 64% | 2612 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 80% | 37,188 psi | 56% | 2582 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,927 psi | 57% | 2628 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 52,315 psi | 78% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,749 psi | 76% | 2753 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,170 psi | 50% | 2415 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 49,559 psi | 74% | 2772 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 30,748 psi | 46% | 2464 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 41,234 psi | 62% | 2684 fps | 98.9% |
| Norma URP | <<locked>> | 80% | 50,444 psi | 76% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,854 psi | 55% | 2589 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 49,487 psi | 74% | 2776 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,982 psi | 49% | 2470 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,601 psi | 43% | 1680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,112 psi | 78% | 2808 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,604 psi | 76% | 2831 fps | 100% |
| ReloadSwiss RS 76 | 68.7 gr | 80% | 30,777 psi | 46% | 2477 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,828 psi | 61% | 2700 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 44,193 psi | 66% | 2651 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,496 psi | 64% | 2654 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 53,447 psi | 80% | 2789 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,315 psi | 78% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,749 psi | 76% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,372 psi | 77% | 2713 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,163 psi | 63% | 2648 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 45,121 psi | 68% | 2641 fps | 97.1% |
| Somchem S365 | <<locked>> | 80% | 48,008 psi | 72% | 2726 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,960 psi | 64% | 2635 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 80% | 55,695 psi | 83% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,967 psi | 78% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,347 psi | 56% | 2510 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 96% | 54,998 psi | 82% | 2848 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 51,256 psi | 77% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,018 psi | 63% | 2641 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,176 psi | 62% | 2674 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 84% | 38,798 psi | 58% | 2605 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 90% | 42,105 psi | 63% | 2717 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 96% | 49,705 psi | 75% | 2897 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,459 psi | 77% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,693 psi | 80% | 2844 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,838 psi | 52% | 2602 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,537 psi | 59% | 2562 fps | 97.4% |
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 | Barnes TSX FB. Hodgdon Retumbo delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,084 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 1:10.0 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 | Barnes TSX FB 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.