Load Specifications
Load data in caliber 7 mm STW with .284 | 160gr | Nosler CT FailSafe bullet and 70 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 57,885 psi | 87% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 58,378 psi | 88% | 2877 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 56,782 psi | 85% | 2959 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 88% | 59,306 psi | 89% | 2943 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 57,566 psi | 86% | 2953 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 60,089 psi | 90% | 2986 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 52,460 psi | 79% | 2959 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,447 psi | 82% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 59,321 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 58,798 psi | 88% | 2933 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,899 psi | 87% | 2949 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 59,625 psi | 89% | 2910 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 59,901 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,521 psi | 85% | 2946 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 58,044 psi | 87% | 3018 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 58,204 psi | 87% | 2913 fps | 98.1% |
| Bofors RP15 | <<locked>> | 92% | 57,101 psi | 86% | 2936 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 59,524 psi | 89% | 2995 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 57,899 psi | 87% | 2949 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 59,190 psi | 89% | 2871 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 57,435 psi | 86% | 2949 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 59,611 psi | 89% | 2930 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 56,739 psi | 85% | 2887 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 59,625 psi | 89% | 2933 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 59,364 psi | 89% | 2848 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 58,798 psi | 88% | 3068 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,608 psi | 56% | 1844 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,783 psi | 87% | 2864 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 58,378 psi | 88% | 2864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,276 psi | 86% | 2871 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 59,669 psi | 89% | 2992 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,879 psi | 75% | 2861 fps | 99.1% |
| Lovex S065 | <<locked>> | 82% | 58,001 psi | 87% | 2838 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 60,220 psi | 90% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 59,321 psi | 89% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 84% | 59,205 psi | 89% | 2923 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 50,662 psi | 76% | 2884 fps | 100% |
| Norma MRP | <<locked>> | 88% | 58,117 psi | 87% | 2966 fps | 100% |
| Norma URP | <<locked>> | 84% | 60,263 psi | 90% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 56,869 psi | 85% | 2956 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 59,074 psi | 89% | 2917 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 59,727 psi | 90% | 2946 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,493 psi | 58% | 1886 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 58,624 psi | 88% | 2897 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 57,058 psi | 86% | 2923 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 60,060 psi | 90% | 3058 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 59,509 psi | 89% | 3022 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 59,698 psi | 89% | 2910 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 58,450 psi | 88% | 2920 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 59,190 psi | 89% | 2871 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 58,001 psi | 87% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 60,220 psi | 90% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,942 psi | 85% | 2795 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 58,044 psi | 87% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 57,638 psi | 86% | 2848 fps | 99.3% |
| Somchem S365 | <<locked>> | 84% | 57,682 psi | 86% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,755 psi | 88% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,972 psi | 87% | 2848 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 58,682 psi | 88% | 2874 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 57,870 psi | 87% | 2890 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 82% | 57,116 psi | 86% | 2851 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,928 psi | 87% | 2890 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,537 psi | 86% | 2966 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 58,146 psi | 87% | 2953 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 59,741 psi | 90% | 3022 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 56,826 psi | 85% | 3018 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,551 psi | 86% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 59,828 psi | 90% | 2933 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 59,741 psi | 90% | 3002 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 58,929 psi | 88% | 2890 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% | 41,263 psi | 62% | 2585 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 54,404 psi | 82% | 2822 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,598 psi | 64% | 2700 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 45,310 psi | 68% | 2713 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 80% | 40,509 psi | 61% | 2648 fps | 96.5% |
| ADI AR 2217 | <<locked>> | 86% | 37,115 psi | 56% | 2566 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 98% | 48,617 psi | 73% | 2884 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 82% | 29,544 psi | 44% | 2408 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,967 psi | 78% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,179 psi | 68% | 2707 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,176 psi | 62% | 2654 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,972 psi | 60% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,563 psi | 52% | 2536 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,020 psi | 67% | 2766 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 45,992 psi | 69% | 2805 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,979 psi | 72% | 2740 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 38,348 psi | 57% | 2592 fps | 97% |
| Bofors RP30 | <<locked>> | 84% | 36,898 psi | 55% | 2579 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 41,176 psi | 62% | 2654 fps | 98% |
| Bofors RP7 | <<locked>> | 80% | 55,608 psi | 83% | 2822 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 35,186 psi | 53% | 2523 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 55,724 psi | 84% | 2874 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 43,250 psi | 65% | 2654 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,366 psi | 64% | 2635 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,965 psi | 73% | 2703 fps | 100% |
| Hodgdon Retumbo | 65.6 gr | 80% | 33,750 psi | 51% | 2566 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,210 psi | 42% | 1654 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,010 psi | 76% | 2759 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 51,343 psi | 77% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,411 psi | 67% | 2648 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 80% | 39,276 psi | 59% | 2628 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 90% | 35,346 psi | 53% | 2562 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 54,505 psi | 82% | 2789 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,968 psi | 79% | 2789 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,607 psi | 53% | 2467 fps | 98.6% |
| Norma 204 | <<locked>> | 80% | 51,837 psi | 78% | 2808 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 31,038 psi | 47% | 2470 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 43,772 psi | 66% | 2730 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 52,779 psi | 79% | 2802 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,204 psi | 59% | 2638 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 80% | 51,837 psi | 78% | 2808 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,128 psi | 53% | 2516 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,892 psi | 43% | 1690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 54,781 psi | 82% | 2844 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 53,156 psi | 80% | 2867 fps | 100% |
| ReloadSwiss RS 76 | 70.2 gr | 80% | 32,924 psi | 49% | 2536 fps | 97.1% |
| ReloadSwiss RS 80 | 77.8 gr | 88% | 40,422 psi | 61% | 2687 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 46,180 psi | 69% | 2687 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 80% | 44,715 psi | 67% | 2694 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 80% | 55,608 psi | 83% | 2822 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,505 psi | 82% | 2789 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,968 psi | 79% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,461 psi | 80% | 2743 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,382 psi | 67% | 2690 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 47,181 psi | 71% | 2677 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 50,531 psi | 76% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,179 psi | 68% | 2674 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 54,172 psi | 81% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 39,407 psi | 59% | 2549 fps | 98% |
| Vihtavuori N170 | <<locked>> | 94% | 54,056 psi | 81% | 2831 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 53,679 psi | 80% | 2802 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,570 psi | 67% | 2684 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,540 psi | 65% | 2720 fps | 97% |
| Vihtavuori N565 | <<locked>> | 82% | 38,667 psi | 58% | 2598 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 41,771 psi | 63% | 2703 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 94% | 49,182 psi | 74% | 2887 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,635 psi | 80% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 55,912 psi | 84% | 2877 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,695 psi | 56% | 2654 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,597 psi | 62% | 2602 fps | 98% |
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 76 powders for 7 mm STW loaded with the .284 | 160gr | Nosler CT FailSafe. Hodgdon Retumbo delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,068 fps. Accurate 8700 gives the best case fill at 100 %, and 76 of the 76 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 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2217, ADI AR 2218 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 | Nosler CT FailSafe they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, IMR 7977 Enduron, 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.