Load Specifications
Load data in caliber 7 mm STW with .284 | 180gr | Berger VLD Hunting bullet and 62 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% | 57,087 psi | 86% | 2700 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 60,104 psi | 90% | 2864 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 86% | 58,421 psi | 88% | 2785 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 56,884 psi | 85% | 2802 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 59,480 psi | 89% | 2835 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,854 psi | 84% | 2894 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 58,088 psi | 87% | 2851 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,624 psi | 88% | 2762 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,030 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,319 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 59,219 psi | 89% | 2753 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 59,582 psi | 89% | 2825 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 60,365 psi | 90% | 2844 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,537 psi | 86% | 2871 fps | 98.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 53,055 psi | 80% | 2799 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,305 psi | 86% | 2762 fps | 98.8% |
| Bofors RP15 | <<locked>> | 92% | 60,350 psi | 90% | 2835 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 59,379 psi | 89% | 2848 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,319 psi | 86% | 2795 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,000 psi | 85% | 2799 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 59,669 psi | 89% | 2789 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,697 psi | 88% | 2776 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 58,682 psi | 88% | 2687 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 58,813 psi | 88% | 2913 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,710 psi | 57% | 1739 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,797 psi | 85% | 2703 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,769 psi | 87% | 2707 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 60,002 psi | 90% | 2769 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 90% | 59,132 psi | 89% | 2838 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 94% | 58,523 psi | 88% | 2717 fps | 96% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,374 psi | 80% | 2779 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 59,161 psi | 89% | 2730 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 58,827 psi | 88% | 2723 fps | 100% |
| Norma 204 | <<locked>> | 82% | 58,247 psi | 87% | 2762 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,433 psi | 82% | 2799 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,421 psi | 86% | 2808 fps | 100% |
| Norma URP | <<locked>> | 82% | 59,263 psi | 89% | 2743 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,594 psi | 85% | 2808 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 58,247 psi | 87% | 2756 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 59,001 psi | 88% | 2792 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,667 psi | 58% | 1778 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 59,799 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 59,016 psi | 88% | 2877 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 86% | 58,871 psi | 88% | 2753 fps | 100% |
| Rottweil R 905 | <<locked>> | 86% | 57,638 psi | 86% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 59,161 psi | 89% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 59,437 psi | 89% | 2684 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,261 psi | 86% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,536 psi | 85% | 2694 fps | 99.7% |
| Somchem S365 | <<locked>> | 82% | 57,029 psi | 85% | 2697 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,059 psi | 87% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,914 psi | 87% | 2723 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,029 psi | 85% | 2749 fps | 97.3% |
| Vihtavuori N550 | <<locked>> | 82% | 59,973 psi | 90% | 2740 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,276 psi | 86% | 2730 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,855 psi | 85% | 2815 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 92% | 57,827 psi | 87% | 2808 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 59,495 psi | 89% | 2877 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 96% | 56,666 psi | 85% | 2877 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 60,249 psi | 90% | 2684 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 59,596 psi | 89% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,856 psi | 87% | 2733 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% | 43,787 psi | 66% | 2500 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 45,469 psi | 68% | 2628 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 80% | 47,892 psi | 72% | 2625 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 43,076 psi | 65% | 2572 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 34,389 psi | 52% | 2385 fps | 96.1% |
| ADI AR 2218 | <<locked>> | 94% | 44,744 psi | 67% | 2687 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 29,544 psi | 44% | 2303 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 55,042 psi | 83% | 2717 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,703 psi | 72% | 2615 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,830 psi | 66% | 2575 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,554 psi | 64% | 2513 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,927 psi | 55% | 2464 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,399 psi | 73% | 2677 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 42,569 psi | 64% | 2615 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 45,513 psi | 68% | 2664 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,669 psi | 62% | 2490 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 40,770 psi | 61% | 2516 fps | 98.7% |
| Bofors RP30 | <<locked>> | 80% | 34,403 psi | 52% | 2402 fps | 96.2% |
| Bofors RP5 | <<locked>> | 80% | 43,830 psi | 66% | 2575 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 34,838 psi | 52% | 2398 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 80% | 45,614 psi | 68% | 2569 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,831 psi | 67% | 2552 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,750 psi | 78% | 2598 fps | 100% |
| Hodgdon Retumbo | 63.6 gr | 80% | 36,100 psi | 54% | 2507 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,369 psi | 43% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,505 psi | 80% | 2657 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,085 psi | 81% | 2657 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,644 psi | 70% | 2559 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 41,843 psi | 63% | 2556 fps | 98.1% |
| IMR 7977 Enduron | <<locked>> | 92% | 54,781 psi | 82% | 2661 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,185 psi | 50% | 2392 fps | 95.5% |
| Lovex S070 | <<locked>> | 80% | 55,492 psi | 83% | 2680 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,826 psi | 57% | 2388 fps | 99.6% |
| Norma 204 | <<locked>> | 80% | 54,505 psi | 82% | 2710 fps | 100% |
| Norma 217 | <<locked>> | 82% | 29,109 psi | 44% | 2303 fps | 96% |
| Norma MRP | <<locked>> | 80% | 46,644 psi | 70% | 2644 fps | 100% |
| Norma URP | <<locked>> | 80% | 55,521 psi | 83% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,930 psi | 63% | 2566 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 80% | 54,607 psi | 82% | 2707 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,724 psi | 57% | 2451 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,095 psi | 44% | 1591 fps | 100% |
| ReloadSwiss RS 76 | 68 gr | 80% | 35,215 psi | 53% | 2480 fps | 99.1% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 37,492 psi | 56% | 2500 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 48,544 psi | 73% | 2598 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 47,311 psi | 71% | 2608 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 55,492 psi | 83% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 55,941 psi | 84% | 2638 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,963 psi | 70% | 2602 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 49,458 psi | 74% | 2585 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 53,505 psi | 80% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,761 psi | 72% | 2582 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 41,742 psi | 63% | 2467 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 90% | 49,864 psi | 75% | 2635 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 56,289 psi | 84% | 2690 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 47,297 psi | 71% | 2589 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,296 psi | 69% | 2641 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 80% | 38,435 psi | 58% | 2470 fps | 96.9% |
| Vihtavuori N568 | <<locked>> | 84% | 38,711 psi | 58% | 2516 fps | 95.6% |
| Vihtavuori N570 | 74.2 gr | 90% | 45,629 psi | 68% | 2690 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 56,275 psi | 84% | 2638 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,002 psi | 61% | 2575 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,121 psi | 66% | 2523 fps | 99.3% |
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 62 powders for 7 mm STW loaded with the .284 | 180gr | Berger VLD Hunting. Hodgdon Retumbo delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,913 fps. ADI AR 2218 gives the best case fill at 100 %, and 62 of the 62 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. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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 Hunting 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.