Load Specifications
Load data in caliber 7 mm STW with .284 | 160gr | Sierra Tipped MatchKing bullet and 72 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 ReloadSwiss RS 80.
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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 90% | 56,710 psi | 85% | 2838 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,290 psi | 86% | 2861 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 59,495 psi | 89% | 2995 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 88% | 58,131 psi | 87% | 2927 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 56,405 psi | 85% | 2936 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 58,552 psi | 88% | 2963 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,082 psi | 77% | 2930 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,982 psi | 79% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,204 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,653 psi | 86% | 2913 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,768 psi | 85% | 2933 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,392 psi | 88% | 2894 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,494 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 59,466 psi | 89% | 2986 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,362 psi | 84% | 2992 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,145 psi | 86% | 2894 fps | 97.8% |
| Bofors RP15 | <<locked>> | 94% | 59,727 psi | 90% | 2976 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 58,189 psi | 87% | 2976 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 56,768 psi | 85% | 2933 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 58,465 psi | 88% | 2861 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,391 psi | 85% | 2930 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 58,581 psi | 88% | 2913 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 59,495 psi | 89% | 2930 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,494 psi | 88% | 2913 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,305 psi | 87% | 2835 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,305 psi | 86% | 3048 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 59,640 psi | 89% | 2953 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,536 psi | 56% | 1837 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,869 psi | 85% | 2848 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 59,669 psi | 89% | 2877 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,363 psi | 86% | 2848 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 59,901 psi | 90% | 2907 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 58,450 psi | 88% | 2976 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,631 psi | 73% | 2841 fps | 98.9% |
| Lovex S065 | <<locked>> | 82% | 57,232 psi | 86% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 59,263 psi | 89% | 2877 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,175 psi | 87% | 2861 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,305 psi | 87% | 2907 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 49,298 psi | 74% | 2864 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 56,898 psi | 85% | 2953 fps | 100% |
| Norma URP | <<locked>> | 84% | 59,219 psi | 89% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 60,031 psi | 90% | 3002 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 58,146 psi | 87% | 2904 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,378 psi | 88% | 2930 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 58% | 1880 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,377 psi | 86% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 60,176 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,653 psi | 88% | 3041 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 57,957 psi | 87% | 3002 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 88% | 58,827 psi | 88% | 2894 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 57,464 psi | 86% | 2907 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,465 psi | 88% | 2861 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,232 psi | 86% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 59,263 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 59,785 psi | 90% | 2831 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,058 psi | 86% | 2904 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 56,666 psi | 85% | 2831 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 56,579 psi | 85% | 2844 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,870 psi | 87% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,985 psi | 85% | 2835 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,595 psi | 86% | 2858 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 56,550 psi | 85% | 2871 fps | 96% |
| Vihtavuori N550 | <<locked>> | 84% | 59,843 psi | 90% | 2887 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,608 psi | 85% | 2874 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 60,249 psi | 90% | 3009 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 94% | 56,869 psi | 85% | 2936 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 58,233 psi | 87% | 3002 fps | 99% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 59,524 psi | 89% | 3061 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,492 psi | 85% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 58,842 psi | 88% | 2920 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 58,059 psi | 87% | 2982 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,638 psi | 86% | 2871 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% | 40,509 psi | 61% | 2572 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 53,519 psi | 80% | 2808 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 41,713 psi | 63% | 2684 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 44,367 psi | 67% | 2694 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 80% | 39,813 psi | 60% | 2631 fps | 96.2% |
| ADI AR 2217 | <<locked>> | 86% | 36,216 psi | 54% | 2546 fps | 95.2% |
| ADI AR 2218 | <<locked>> | 98% | 47,485 psi | 71% | 2861 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 84% | 30,980 psi | 46% | 2454 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,068 psi | 77% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,454 psi | 67% | 2690 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,437 psi | 61% | 2641 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,175 psi | 59% | 2592 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,736 psi | 51% | 2516 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,019 psi | 66% | 2749 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 48,341 psi | 72% | 2854 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,210 psi | 71% | 2723 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 37,623 psi | 56% | 2575 fps | 96.7% |
| Bofors RP30 | <<locked>> | 84% | 36,027 psi | 54% | 2562 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 40,437 psi | 61% | 2641 fps | 97.7% |
| Bofors RP7 | <<locked>> | 80% | 54,824 psi | 82% | 2805 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 34,447 psi | 52% | 2503 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 54,926 psi | 82% | 2861 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,380 psi | 64% | 2635 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,684 psi | 62% | 2621 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,080 psi | 72% | 2690 fps | 100% |
| Hodgdon Retumbo | 64.4 gr | 80% | 32,938 psi | 49% | 2543 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 55,332 psi | 83% | 2890 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,152 psi | 42% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,067 psi | 75% | 2740 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 56,057 psi | 84% | 2825 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,560 psi | 76% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,584 psi | 65% | 2631 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 80% | 38,551 psi | 58% | 2612 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 92% | 36,898 psi | 55% | 2602 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 53,708 psi | 81% | 2776 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,214 psi | 78% | 2772 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,853 psi | 52% | 2451 fps | 98.3% |
| Norma 204 | <<locked>> | 80% | 50,894 psi | 76% | 2792 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 32,329 psi | 48% | 2507 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 42,815 psi | 64% | 2710 fps | 99.2% |
| Norma URP | <<locked>> | 80% | 51,953 psi | 78% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,305 psi | 57% | 2618 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 80% | 50,923 psi | 76% | 2795 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,301 psi | 51% | 2497 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,834 psi | 43% | 1683 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,519 psi | 80% | 2825 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,112 psi | 78% | 2854 fps | 100% |
| ReloadSwiss RS 76 | 69 gr | 80% | 32,213 psi | 48% | 2516 fps | 96.7% |
| ReloadSwiss RS 80 | 76.5 gr | 88% | 39,450 psi | 59% | 2667 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 45,498 psi | 68% | 2674 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 80% | 43,947 psi | 66% | 2680 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 80% | 54,824 psi | 82% | 2805 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,708 psi | 81% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,214 psi | 78% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,547 psi | 79% | 2730 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,598 psi | 65% | 2674 fps | 98.5% |
| Somchem S361 | <<locked>> | 80% | 46,427 psi | 70% | 2661 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 49,400 psi | 74% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,454 psi | 67% | 2657 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 53,374 psi | 80% | 2782 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,725 psi | 58% | 2536 fps | 97.8% |
| Vihtavuori N170 | <<locked>> | 94% | 52,982 psi | 79% | 2812 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 52,692 psi | 79% | 2785 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,569 psi | 65% | 2667 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,641 psi | 64% | 2703 fps | 96.6% |
| Vihtavuori N565 | <<locked>> | 82% | 37,840 psi | 57% | 2582 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 90% | 43,714 psi | 66% | 2746 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 94% | 47,877 psi | 72% | 2864 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,779 psi | 79% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,926 psi | 82% | 2861 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,564 psi | 55% | 2638 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,727 psi | 61% | 2585 fps | 97.8% |
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 | 160gr | Sierra Tipped MatchKing. Vihtavuori N570 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,061 fps. ADI AR 2217 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 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 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, ReloadSwiss RS 80 rank at the top here: for 7 mm STW with the .284 | 160gr | Sierra Tipped MatchKing 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.