Load Specifications
Load data in caliber 7 mm STW with .284 | 140gr | Nosler CT FailSafe bullet and 71 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>> | 92% | 57,783 psi | 87% | 3015 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 58,436 psi | 88% | 3051 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,463 psi | 85% | 3107 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 90% | 59,335 psi | 89% | 3110 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 57,421 psi | 86% | 3114 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,492 psi | 83% | 3074 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,082 psi | 75% | 3031 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 59,117 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,784 psi | 88% | 3094 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,667 psi | 86% | 3110 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 59,132 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 59,030 psi | 88% | 3140 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 60,336 psi | 90% | 3169 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,421 psi | 88% | 3068 fps | 97% |
| Bofors RP15 | <<locked>> | 94% | 56,826 psi | 85% | 3094 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 59,045 psi | 89% | 3146 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 57,667 psi | 86% | 3110 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 59,814 psi | 90% | 3048 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,334 psi | 86% | 3104 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 59,814 psi | 90% | 3100 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 58,131 psi | 87% | 3058 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 90% | 56,913 psi | 85% | 3048 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 59,712 psi | 90% | 3094 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 59,437 psi | 89% | 3022 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,899 psi | 87% | 3222 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,695 psi | 85% | 3077 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,260 psi | 56% | 1965 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,044 psi | 87% | 3028 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,493 psi | 86% | 3015 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 58,624 psi | 88% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,566 psi | 86% | 3031 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 59,524 psi | 89% | 3156 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,527 psi | 68% | 2930 fps | 97.2% |
| Lovex S065 | <<locked>> | 84% | 58,305 psi | 87% | 3012 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 60,278 psi | 90% | 3061 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 58,972 psi | 88% | 3035 fps | 100% |
| Norma 204 | <<locked>> | 86% | 59,640 psi | 89% | 3091 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 46,122 psi | 69% | 2959 fps | 99.2% |
| Norma MRP | <<locked>> | 90% | 57,856 psi | 87% | 3130 fps | 100% |
| Norma URP | <<locked>> | 86% | 60,104 psi | 90% | 3081 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,347 psi | 84% | 3114 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 59,292 psi | 89% | 3087 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 59,538 psi | 89% | 3107 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,232 psi | 57% | 2014 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,523 psi | 88% | 3068 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,927 psi | 85% | 3094 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 59,364 psi | 89% | 3219 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 58,929 psi | 88% | 3173 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 90% | 59,988 psi | 90% | 3077 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 58,392 psi | 88% | 3087 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 59,814 psi | 90% | 3048 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,305 psi | 87% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 60,278 psi | 90% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 60,205 psi | 90% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,566 psi | 86% | 2966 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,972 psi | 87% | 3081 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 57,986 psi | 87% | 3005 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 57,421 psi | 86% | 3028 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,885 psi | 88% | 3054 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 58,320 psi | 87% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,218 psi | 87% | 3018 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,624 psi | 88% | 3035 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 57,406 psi | 86% | 3022 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,406 psi | 86% | 3051 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,421 psi | 86% | 3127 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 96% | 57,856 psi | 87% | 3107 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 59,132 psi | 89% | 3169 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,841 psi | 87% | 2969 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 60,046 psi | 90% | 3104 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 58,581 psi | 88% | 3166 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,987 psi | 88% | 3051 fps | 99.7% |
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% | 38,261 psi | 57% | 2671 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 50,807 psi | 76% | 2933 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 45,585 psi | 68% | 2907 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 42,134 psi | 63% | 2802 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 82% | 40,408 psi | 61% | 2789 fps | 95% |
| ADI AR 2217 | <<locked>> | 90% | 39,465 psi | 59% | 2756 fps | 95% |
| ADI AR 2225 | <<locked>> | 88% | 33,417 psi | 50% | 2648 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,573 psi | 73% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,235 psi | 63% | 2795 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,130 psi | 57% | 2733 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,796 psi | 55% | 2694 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,821 psi | 48% | 2598 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,162 psi | 62% | 2844 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 51,561 psi | 77% | 2946 fps | 95.4% |
| Bofors RP15 | <<locked>> | 82% | 37,956 psi | 57% | 2726 fps | 95.4% |
| Bofors RP30 | <<locked>> | 88% | 38,899 psi | 58% | 2769 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 38,130 psi | 57% | 2733 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 52,678 psi | 79% | 2933 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 40,190 psi | 60% | 2779 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 52,185 psi | 78% | 2982 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 54,462 psi | 82% | 2999 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 43,221 psi | 65% | 2799 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 82% | 42,366 psi | 64% | 2779 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,687 psi | 68% | 2815 fps | 100% |
| Hodgdon Retumbo | 70.7 gr | 84% | 35,621 psi | 53% | 2749 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 52,736 psi | 79% | 3012 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 42% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,892 psi | 72% | 2861 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,911 psi | 81% | 2959 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 48,138 psi | 72% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,669 psi | 62% | 2736 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 41,930 psi | 63% | 2831 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 96% | 39,740 psi | 60% | 2805 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 51,416 psi | 77% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,980 psi | 75% | 2897 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 32,967 psi | 49% | 2543 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 48,501 psi | 73% | 2907 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 34,766 psi | 52% | 2703 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 40,234 psi | 60% | 2805 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 49,501 psi | 74% | 2917 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 41,800 psi | 63% | 2841 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 80% | 48,457 psi | 73% | 2913 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 34,867 psi | 52% | 2644 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,587 psi | 43% | 1804 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,937 psi | 76% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,298 psi | 74% | 2972 fps | 100% |
| ReloadSwiss RS 76 | 73.9 gr | 82% | 32,590 psi | 49% | 2651 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 46,528 psi | 70% | 2956 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 43,439 psi | 65% | 2782 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 41,684 psi | 62% | 2782 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 52,678 psi | 79% | 2933 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,416 psi | 77% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,980 psi | 75% | 2897 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 56,811 psi | 85% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,386 psi | 76% | 2851 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,350 psi | 62% | 2776 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 44,338 psi | 66% | 2766 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 46,746 psi | 70% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,192 psi | 63% | 2762 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 54,824 psi | 82% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,879 psi | 76% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,709 psi | 55% | 2628 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 50,372 psi | 76% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,205 psi | 62% | 2776 fps | 99.9% |
| Vihtavuori N560 | 71.7 gr | 82% | 43,294 psi | 65% | 2861 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 40,944 psi | 61% | 2789 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 47,601 psi | 71% | 2969 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,299 psi | 75% | 2861 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,402 psi | 79% | 2986 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,721 psi | 51% | 2723 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,682 psi | 58% | 2684 fps | 95.9% |
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 71 powders for 7 mm STW loaded with the .284 | 140gr | Nosler CT FailSafe. Hodgdon Retumbo delivers the highest muzzle velocity at 3,222 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,222 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 140.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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 | 140gr | Nosler CT FailSafe 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.