Load Specifications
Load data in caliber 7 mm STW with .284 | 168gr | Nosler Custom Competition bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H1000, Hodgdon Retumbo and Vihtavuori N570.
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>> | 90% | 59,944 psi | 90% | 2822 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 59,030 psi | 88% | 2933 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 86% | 57,435 psi | 86% | 2858 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 59,727 psi | 90% | 2927 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 58,334 psi | 87% | 2904 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,694 psi | 82% | 2949 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,898 psi | 85% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,696 psi | 86% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,014 psi | 85% | 2848 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 60,060 psi | 90% | 2920 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,943 psi | 87% | 2825 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 58,378 psi | 88% | 2900 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,929 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 56,275 psi | 84% | 2933 fps | 98.1% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 51,953 psi | 78% | 2854 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 60,249 psi | 90% | 2887 fps | 98.8% |
| Bofors RP15 | <<locked>> | 92% | 59,393 psi | 89% | 2910 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 58,059 psi | 87% | 2913 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 60,060 psi | 90% | 2920 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 60,046 psi | 90% | 2923 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 58,914 psi | 88% | 2864 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,740 psi | 87% | 2848 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,711 psi | 87% | 2766 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 57,421 psi | 86% | 2982 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,695 psi | 56% | 1804 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 59,727 psi | 90% | 2828 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,797 psi | 85% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,987 psi | 88% | 2838 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 90% | 58,175 psi | 87% | 2913 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,185 psi | 78% | 2841 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 59,828 psi | 90% | 2805 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 58,291 psi | 87% | 2805 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,798 psi | 87% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,305 psi | 86% | 2835 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 53,417 psi | 80% | 2867 fps | 100% |
| Norma MRP | <<locked>> | 88% | 60,365 psi | 90% | 2936 fps | 100% |
| Norma URP | <<locked>> | 82% | 58,320 psi | 87% | 2822 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 59,567 psi | 89% | 2936 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 57,319 psi | 86% | 2831 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,841 psi | 87% | 2861 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,609 psi | 58% | 1847 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 59,437 psi | 89% | 2894 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 58,450 psi | 88% | 2972 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,870 psi | 87% | 2943 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 86% | 58,001 psi | 87% | 2828 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,637 psi | 85% | 2838 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,828 psi | 90% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,291 psi | 87% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,798 psi | 88% | 2762 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 60,292 psi | 90% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 59,625 psi | 89% | 2822 fps | 99.7% |
| Somchem S365 | <<locked>> | 84% | 60,017 psi | 90% | 2825 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,014 psi | 85% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 59,828 psi | 90% | 2812 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,927 psi | 85% | 2795 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 59,944 psi | 90% | 2871 fps | 97.3% |
| Vihtavuori N550 | <<locked>> | 82% | 59,146 psi | 89% | 2818 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 60,002 psi | 90% | 2854 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 59,712 psi | 90% | 2943 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 92% | 56,666 psi | 85% | 2874 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 96% | 58,334 psi | 87% | 2943 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 98% | 59,451 psi | 89% | 3002 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 59,379 psi | 89% | 2759 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 58,218 psi | 87% | 2917 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,826 psi | 85% | 2805 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% | 42,975 psi | 64% | 2566 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 44,527 psi | 67% | 2687 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 46,934 psi | 70% | 2690 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 42,264 psi | 63% | 2631 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 84% | 36,071 psi | 54% | 2493 fps | 96% |
| ADI AR 2218 | <<locked>> | 96% | 47,152 psi | 71% | 2808 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 28,834 psi | 43% | 2343 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 54,041 psi | 81% | 2792 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,920 psi | 70% | 2684 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,004 psi | 64% | 2638 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,800 psi | 63% | 2582 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,042 psi | 54% | 2520 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,268 psi | 71% | 2743 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,875 psi | 67% | 2733 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 48,109 psi | 72% | 2785 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,598 psi | 65% | 2605 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 40,045 psi | 60% | 2575 fps | 98% |
| Bofors RP30 | <<locked>> | 80% | 33,663 psi | 50% | 2451 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 43,004 psi | 64% | 2638 fps | 98.8% |
| Hodgdon H1000 | 65.9 gr | 80% | 34,171 psi | 51% | 2451 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 80% | 44,802 psi | 67% | 2631 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,048 psi | 66% | 2618 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,836 psi | 76% | 2671 fps | 100% |
| Hodgdon Retumbo | 65.6 gr | 80% | 35,172 psi | 53% | 2552 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,297 psi | 42% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,533 psi | 79% | 2726 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,301 psi | 80% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,803 psi | 69% | 2621 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 41,017 psi | 61% | 2615 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,577 psi | 52% | 2493 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 56,275 psi | 84% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,752 psi | 82% | 2756 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,014 psi | 55% | 2444 fps | 99.2% |
| Norma 204 | <<locked>> | 80% | 53,519 psi | 80% | 2779 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 30,414 psi | 46% | 2402 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 45,600 psi | 68% | 2707 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 54,708 psi | 82% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,104 psi | 62% | 2628 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 80% | 53,606 psi | 80% | 2779 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,898 psi | 55% | 2507 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,008 psi | 43% | 1654 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 55,172 psi | 83% | 2835 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,418 psi | 52% | 2530 fps | 98.3% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 39,465 psi | 59% | 2612 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 47,863 psi | 72% | 2664 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 46,543 psi | 70% | 2674 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 56,275 psi | 84% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,752 psi | 82% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,969 psi | 82% | 2710 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,195 psi | 69% | 2667 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 48,689 psi | 73% | 2651 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 52,402 psi | 79% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,949 psi | 70% | 2651 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 56,130 psi | 84% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 41,017 psi | 61% | 2533 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 52,388 psi | 79% | 2756 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 55,376 psi | 83% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 46,311 psi | 69% | 2654 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,252 psi | 68% | 2700 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 37,724 psi | 57% | 2526 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 86% | 40,712 psi | 61% | 2631 fps | 95.6% |
| Vihtavuori N570 | 78.3 gr | 92% | 47,906 psi | 72% | 2808 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 55,376 psi | 83% | 2710 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,842 psi | 60% | 2635 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,279 psi | 65% | 2582 fps | 98.8% |
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 72 powders for 7 mm STW loaded with the .284 | 168gr | Nosler Custom Competition. Vihtavuori N570 delivers the highest muzzle velocity at 3,002 fps; across all powders the maximum-charge window runs from 1,804 fps to 3,002 fps. Accurate 8700 gives the best case fill at 100 %, and 72 of the 72 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 168.0 gr projectile in 0.284" calls for a 1:11.5 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. Hodgdon H1000, Hodgdon Retumbo, Vihtavuori N570 rank at the top here: for 7 mm STW with the .284 | 168gr | Nosler Custom Competition they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, Lovex D100, Ramshot LRT 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.