Load Specifications
Load data in caliber 7 mm STW with .284 | 180gr | Berger VLD Target bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and ReloadSwiss RS 76.
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>> | 88% | 56,884 psi | 85% | 2697 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 59,901 psi | 90% | 2861 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 86% | 58,189 psi | 87% | 2779 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 56,623 psi | 85% | 2799 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 59,016 psi | 88% | 2825 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,448 psi | 83% | 2884 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 57,870 psi | 87% | 2844 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,378 psi | 88% | 2759 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,566 psi | 86% | 2769 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,058 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 58,943 psi | 88% | 2749 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 59,074 psi | 89% | 2818 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 59,857 psi | 90% | 2838 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,087 psi | 86% | 2867 fps | 98.7% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,649 psi | 79% | 2789 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 56,927 psi | 85% | 2756 fps | 98.7% |
| Bofors RP15 | <<locked>> | 92% | 60,118 psi | 90% | 2831 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 58,885 psi | 88% | 2838 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,058 psi | 86% | 2792 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 56,811 psi | 85% | 2795 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 59,480 psi | 89% | 2785 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,450 psi | 88% | 2772 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 58,436 psi | 88% | 2684 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 58,247 psi | 87% | 2907 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,753 psi | 57% | 1736 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 60,292 psi | 90% | 2749 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,508 psi | 86% | 2700 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 59,567 psi | 89% | 2759 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 90% | 58,871 psi | 88% | 2835 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 94% | 58,088 psi | 87% | 2710 fps | 95.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,895 psi | 79% | 2772 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 58,914 psi | 88% | 2726 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 58,595 psi | 88% | 2717 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,986 psi | 87% | 2759 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,244 psi | 81% | 2795 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,203 psi | 86% | 2805 fps | 100% |
| Norma URP | <<locked>> | 82% | 59,001 psi | 88% | 2740 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,086 psi | 84% | 2802 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 57,986 psi | 87% | 2749 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 58,769 psi | 88% | 2789 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,696 psi | 58% | 1778 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 60,118 psi | 90% | 2812 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 59,553 psi | 89% | 2900 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 58,610 psi | 88% | 2871 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 86% | 58,653 psi | 88% | 2749 fps | 100% |
| Rottweil R 905 | <<locked>> | 86% | 57,392 psi | 86% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,914 psi | 88% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 59,248 psi | 89% | 2680 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,000 psi | 85% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 60,263 psi | 90% | 2746 fps | 99.9% |
| Somchem S365 | <<locked>> | 82% | 56,739 psi | 85% | 2694 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,827 psi | 87% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,725 psi | 87% | 2717 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 56,898 psi | 85% | 2746 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 82% | 59,741 psi | 90% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,014 psi | 85% | 2726 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,594 psi | 85% | 2808 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 92% | 57,392 psi | 86% | 2802 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 59,030 psi | 88% | 2871 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 98% | 60,321 psi | 90% | 2930 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 60,031 psi | 90% | 2680 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 59,306 psi | 89% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,653 psi | 86% | 2730 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% | 43,526 psi | 65% | 2497 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 45,208 psi | 68% | 2621 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 80% | 47,630 psi | 71% | 2618 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 42,830 psi | 64% | 2566 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 34,229 psi | 51% | 2382 fps | 96% |
| ADI AR 2218 | <<locked>> | 94% | 44,599 psi | 67% | 2684 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 29,370 psi | 44% | 2297 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 80% | 54,766 psi | 82% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,456 psi | 71% | 2612 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,584 psi | 65% | 2572 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,467 psi | 64% | 2513 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,695 psi | 55% | 2461 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,892 psi | 72% | 2671 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 42,366 psi | 64% | 2612 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 96% | 45,339 psi | 68% | 2664 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,379 psi | 62% | 2484 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 40,524 psi | 61% | 2510 fps | 98.6% |
| Bofors RP30 | <<locked>> | 80% | 34,171 psi | 51% | 2395 fps | 96.1% |
| Bofors RP5 | <<locked>> | 80% | 43,584 psi | 65% | 2572 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 34,679 psi | 52% | 2395 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 80% | 45,382 psi | 68% | 2562 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,628 psi | 67% | 2549 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,488 psi | 77% | 2595 fps | 100% |
| Hodgdon Retumbo | 63.3 gr | 80% | 35,868 psi | 54% | 2500 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,355 psi | 43% | 1552 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,258 psi | 80% | 2651 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,867 psi | 81% | 2651 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,427 psi | 70% | 2556 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 41,626 psi | 62% | 2549 fps | 98.1% |
| IMR 7977 Enduron | <<locked>> | 92% | 54,621 psi | 82% | 2657 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 86% | 32,982 psi | 49% | 2385 fps | 95.4% |
| Lovex S070 | <<locked>> | 80% | 55,230 psi | 83% | 2677 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,608 psi | 56% | 2385 fps | 99.6% |
| Norma 204 | <<locked>> | 80% | 54,259 psi | 81% | 2703 fps | 100% |
| Norma 217 | <<locked>> | 82% | 28,906 psi | 43% | 2297 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 46,412 psi | 70% | 2638 fps | 100% |
| Norma URP | <<locked>> | 80% | 55,230 psi | 83% | 2690 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,684 psi | 62% | 2562 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 80% | 54,360 psi | 81% | 2700 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,521 psi | 56% | 2448 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,080 psi | 44% | 1591 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 55,956 psi | 84% | 2756 fps | 100% |
| ReloadSwiss RS 76 | 67.7 gr | 80% | 35,027 psi | 53% | 2477 fps | 99.1% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 37,275 psi | 56% | 2497 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 48,298 psi | 72% | 2592 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 47,065 psi | 71% | 2602 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 55,230 psi | 83% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 55,695 psi | 83% | 2631 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,731 psi | 70% | 2595 fps | 99.6% |
| Somchem S361 | <<locked>> | 80% | 49,269 psi | 74% | 2582 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 53,258 psi | 80% | 2648 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,514 psi | 71% | 2579 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 41,539 psi | 62% | 2464 fps | 99.2% |
| Vihtavuori N170 | <<locked>> | 90% | 49,719 psi | 75% | 2631 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 56,043 psi | 84% | 2687 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 47,007 psi | 70% | 2582 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,064 psi | 69% | 2635 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 80% | 38,218 psi | 57% | 2464 fps | 96.8% |
| Vihtavuori N568 | <<locked>> | 84% | 38,522 psi | 58% | 2510 fps | 95.5% |
| Vihtavuori N570 | 73.9 gr | 90% | 45,397 psi | 68% | 2684 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 56,072 psi | 84% | 2631 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,698 psi | 61% | 2569 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,903 psi | 66% | 2516 fps | 99.2% |
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 70 powders for 7 mm STW loaded with the .284 | 180gr | Berger VLD Target. Vihtavuori N570 delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,930 fps. Accurate 8700 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 180gr | Berger VLD Target they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, Hodgdon US 869, 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.