Load Specifications
Load data in caliber 7 mm STW with .284 | 160gr | Norma Tipstrike 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 Vihtavuori N560.
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% | 57,029 psi | 85% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,624 psi | 86% | 2867 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 60,046 psi | 90% | 3005 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 58,436 psi | 88% | 2930 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 56,681 psi | 85% | 2943 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 59,030 psi | 88% | 2969 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,459 psi | 77% | 2936 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,476 psi | 80% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,581 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,986 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,058 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,711 psi | 88% | 2900 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,769 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 59,799 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,797 psi | 85% | 2995 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,551 psi | 86% | 2900 fps | 97.9% |
| Bofors RP15 | <<locked>> | 94% | 60,031 psi | 90% | 2979 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 58,726 psi | 88% | 2982 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 57,058 psi | 86% | 2936 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,769 psi | 88% | 2864 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,666 psi | 85% | 2936 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 58,914 psi | 88% | 2917 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 60,017 psi | 90% | 2933 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,798 psi | 88% | 2917 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,653 psi | 88% | 2838 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,885 psi | 87% | 3054 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 60,191 psi | 90% | 2959 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,608 psi | 56% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,174 psi | 86% | 2851 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 60,002 psi | 90% | 2884 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,696 psi | 86% | 2854 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 60,191 psi | 90% | 2910 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 59,045 psi | 89% | 2982 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,907 psi | 73% | 2844 fps | 98.9% |
| Lovex S065 | <<locked>> | 82% | 57,348 psi | 86% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 59,582 psi | 89% | 2881 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,726 psi | 88% | 2864 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,595 psi | 88% | 2913 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 49,864 psi | 75% | 2871 fps | 100% |
| Norma MRP | <<locked>> | 88% | 57,217 psi | 86% | 2956 fps | 100% |
| Norma URP | <<locked>> | 84% | 59,567 psi | 89% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 60,365 psi | 90% | 3005 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 58,450 psi | 88% | 2907 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,653 psi | 88% | 2933 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,493 psi | 58% | 1883 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,711 psi | 87% | 2887 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,347 psi | 84% | 2913 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,929 psi | 88% | 3045 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 58,450 psi | 88% | 3009 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 59,117 psi | 89% | 2900 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 57,798 psi | 87% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,769 psi | 88% | 2864 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,348 psi | 86% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 59,582 psi | 89% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 60,089 psi | 90% | 2835 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,377 psi | 86% | 2910 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 56,927 psi | 85% | 2835 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 56,956 psi | 85% | 2848 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,189 psi | 87% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,334 psi | 86% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,885 psi | 87% | 2864 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 57,014 psi | 85% | 2877 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 82% | 56,478 psi | 85% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,000 psi | 85% | 2877 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,739 psi | 85% | 2953 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 94% | 57,392 psi | 86% | 2943 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 58,740 psi | 88% | 3009 fps | 99.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 60,046 psi | 90% | 3068 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,753 psi | 85% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 59,161 psi | 89% | 2923 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 58,740 psi | 88% | 2989 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 58,131 psi | 87% | 2877 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% | 40,799 psi | 61% | 2575 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 53,896 psi | 81% | 2812 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,032 psi | 63% | 2687 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 44,686 psi | 67% | 2700 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 80% | 40,118 psi | 60% | 2638 fps | 96.3% |
| ADI AR 2217 | <<locked>> | 86% | 36,492 psi | 55% | 2552 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 98% | 47,848 psi | 72% | 2864 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 82% | 29,109 psi | 44% | 2395 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,445 psi | 77% | 2815 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,744 psi | 67% | 2697 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,741 psi | 61% | 2644 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,479 psi | 59% | 2595 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,026 psi | 51% | 2523 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,338 psi | 66% | 2753 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 48,791 psi | 73% | 2861 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,587 psi | 71% | 2730 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 37,927 psi | 57% | 2582 fps | 96.8% |
| Bofors RP30 | <<locked>> | 84% | 36,318 psi | 54% | 2569 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 40,741 psi | 61% | 2644 fps | 97.8% |
| Bofors RP7 | <<locked>> | 80% | 55,143 psi | 83% | 2812 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 34,693 psi | 52% | 2510 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 55,027 psi | 82% | 2861 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,670 psi | 64% | 2641 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,959 psi | 63% | 2625 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,443 psi | 73% | 2694 fps | 100% |
| Hodgdon Retumbo | 64.8 gr | 80% | 33,214 psi | 50% | 2549 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 55,927 psi | 84% | 2900 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 42% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,386 psi | 76% | 2746 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 56,391 psi | 85% | 2831 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,691 psi | 76% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,874 psi | 66% | 2635 fps | 97% |
| IMR 7828 SSC | <<locked>> | 80% | 38,682 psi | 58% | 2615 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 92% | 37,159 psi | 56% | 2608 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 54,056 psi | 81% | 2779 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,518 psi | 79% | 2779 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,157 psi | 53% | 2454 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 51,213 psi | 77% | 2795 fps | 99.4% |
| Norma 217 | <<locked>> | 86% | 30,414 psi | 46% | 2451 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 43,134 psi | 65% | 2717 fps | 99.3% |
| Norma URP | <<locked>> | 80% | 52,272 psi | 78% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,595 psi | 58% | 2625 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 80% | 51,242 psi | 77% | 2799 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,606 psi | 52% | 2503 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,805 psi | 43% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,853 psi | 81% | 2831 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,446 psi | 79% | 2858 fps | 100% |
| ReloadSwiss RS 76 | 69.4 gr | 80% | 32,430 psi | 49% | 2523 fps | 96.8% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 39,726 psi | 60% | 2671 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 45,774 psi | 69% | 2677 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 80% | 44,251 psi | 66% | 2684 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 80% | 55,143 psi | 83% | 2812 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,056 psi | 81% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,518 psi | 79% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,866 psi | 79% | 2733 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,918 psi | 66% | 2680 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 46,673 psi | 70% | 2667 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 49,792 psi | 75% | 2746 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,773 psi | 67% | 2664 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 53,722 psi | 81% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 39,015 psi | 58% | 2539 fps | 97.9% |
| Vihtavuori N170 | <<locked>> | 94% | 53,214 psi | 80% | 2818 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 53,026 psi | 79% | 2789 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,903 psi | 66% | 2671 fps | 100% |
| Vihtavuori N560 | 67.3 gr | 80% | 42,946 psi | 64% | 2707 fps | 96.7% |
| Vihtavuori N565 | <<locked>> | 82% | 38,116 psi | 57% | 2585 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 88% | 41,075 psi | 62% | 2690 fps | 95% |
| Vihtavuori N570 | <<locked>> | 94% | 48,167 psi | 72% | 2867 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,069 psi | 80% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 55,274 psi | 83% | 2864 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,956 psi | 55% | 2641 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,017 psi | 61% | 2589 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 | Norma Tipstrike. Vihtavuori N570 delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,068 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 1:10.5 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, Vihtavuori N560 rank at the top here: for 7 mm STW with the .284 | 160gr | Norma Tipstrike 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.