Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | Nosler Ballistic Silver Tip bullet and 74 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 ReloadSwiss RS 76.
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% | 58,639 psi | 88% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,277 psi | 89% | 2972 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 56,347 psi | 84% | 3038 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 90% | 57,537 psi | 86% | 3045 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 60,249 psi | 90% | 3035 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 58,334 psi | 87% | 3045 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,492 psi | 85% | 3009 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,966 psi | 76% | 2969 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,420 psi | 85% | 2972 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 60,205 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 59,669 psi | 89% | 3022 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,566 psi | 88% | 3038 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 60,017 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 60,089 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,058 psi | 86% | 3038 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,056 psi | 81% | 3025 fps | 96.5% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 59,292 psi | 89% | 3002 fps | 97.7% |
| Bofors RP15 | <<locked>> | 94% | 57,711 psi | 87% | 3025 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 60,002 psi | 90% | 3081 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 58,566 psi | 88% | 3038 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 56,724 psi | 85% | 2913 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,146 psi | 87% | 3035 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 56,782 psi | 85% | 2969 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,059 psi | 89% | 2982 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 57,682 psi | 86% | 2979 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,710 psi | 85% | 2963 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 60,350 psi | 90% | 2943 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 59,059 psi | 89% | 3156 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,711 psi | 87% | 3005 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 56% | 1896 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,842 psi | 88% | 2956 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,218 psi | 87% | 2940 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,509 psi | 89% | 2963 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,349 psi | 87% | 2959 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 60,365 psi | 90% | 3084 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,456 psi | 70% | 2871 fps | 98% |
| Lovex S065 | <<locked>> | 84% | 59,146 psi | 89% | 2936 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,421 psi | 86% | 2933 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 59,901 psi | 90% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,434 psi | 85% | 2956 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 46,963 psi | 70% | 2900 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 58,624 psi | 88% | 3058 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,188 psi | 86% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,551 psi | 86% | 3048 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 60,176 psi | 90% | 3015 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,941 psi | 84% | 2972 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,305 psi | 57% | 1942 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,596 psi | 89% | 2995 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,899 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,115 psi | 84% | 3087 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 60,002 psi | 90% | 3107 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 88% | 57,029 psi | 85% | 2946 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 59,306 psi | 89% | 3015 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 56,724 psi | 85% | 2913 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,146 psi | 89% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,421 psi | 86% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,204 psi | 87% | 2887 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,871 psi | 88% | 3009 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 58,798 psi | 88% | 2936 fps | 99.1% |
| Somchem S365 | <<locked>> | 86% | 58,392 psi | 88% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,872 psi | 90% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,132 psi | 89% | 2871 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,987 psi | 88% | 2943 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,509 psi | 89% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 58,262 psi | 87% | 2949 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,262 psi | 87% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,160 psi | 87% | 3054 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 58,624 psi | 88% | 3038 fps | 99.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 60,133 psi | 90% | 3104 fps | 98.9% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,029 psi | 85% | 3100 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,697 psi | 88% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,014 psi | 85% | 2972 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 59,799 psi | 90% | 3091 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 59,886 psi | 90% | 2979 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% | 38,928 psi | 58% | 2608 fps | 98.8% |
| Accurate 4350 | <<locked>> | 80% | 51,590 psi | 77% | 2858 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 42,569 psi | 64% | 2785 fps | 96.6% |
| Accurate MAGPRO | <<locked>> | 82% | 43,236 psi | 65% | 2785 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,975 psi | 64% | 2740 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 82% | 41,176 psi | 62% | 2730 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 90% | 40,118 psi | 60% | 2703 fps | 96% |
| ADI AR 2225 | <<locked>> | 86% | 31,836 psi | 48% | 2536 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,279 psi | 65% | 2740 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,284 psi | 74% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,888 psi | 64% | 2730 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,856 psi | 58% | 2677 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,550 psi | 56% | 2635 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,532 psi | 49% | 2549 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,061 psi | 63% | 2789 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,980 psi | 75% | 2953 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,950 psi | 73% | 2822 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 36,143 psi | 54% | 2608 fps | 95.4% |
| Bofors RP30 | <<locked>> | 86% | 36,970 psi | 55% | 2654 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 38,856 psi | 58% | 2677 fps | 96.6% |
| Bofors RP7 | <<locked>> | 80% | 53,258 psi | 80% | 2861 fps | 99.8% |
| Hodgdon H1000 | 70.5 gr | 86% | 38,189 psi | 57% | 2661 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 53,040 psi | 80% | 2910 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 55,201 psi | 83% | 2923 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 41,017 psi | 61% | 2677 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 82% | 43,120 psi | 65% | 2720 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,456 psi | 70% | 2743 fps | 100% |
| Hodgdon Retumbo | 66.9 gr | 82% | 33,939 psi | 51% | 2631 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 53,563 psi | 80% | 2943 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,050 psi | 42% | 1699 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,718 psi | 73% | 2795 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,694 psi | 82% | 2884 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,849 psi | 73% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,380 psi | 64% | 2677 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 82% | 39,856 psi | 60% | 2713 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,695 psi | 56% | 2687 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 52,185 psi | 78% | 2831 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,589 psi | 76% | 2825 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 33,533 psi | 50% | 2484 fps | 97.3% |
| Norma 204 | <<locked>> | 80% | 49,342 psi | 74% | 2841 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 33,054 psi | 50% | 2592 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 41,147 psi | 62% | 2753 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 50,198 psi | 75% | 2844 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 39,653 psi | 59% | 2717 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 49,284 psi | 74% | 2844 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 32,924 psi | 49% | 2526 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 43% | 1739 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,721 psi | 78% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,169 psi | 75% | 2904 fps | 100% |
| ReloadSwiss RS 76 | 71.6 gr | 82% | 33,170 psi | 50% | 2605 fps | 96.3% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 43,874 psi | 66% | 2831 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 44,005 psi | 66% | 2717 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 80% | 42,351 psi | 63% | 2720 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 80% | 53,258 psi | 80% | 2861 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,185 psi | 78% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,589 psi | 76% | 2825 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,198 psi | 77% | 2782 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,003 psi | 63% | 2717 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 45,005 psi | 67% | 2703 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 47,747 psi | 72% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,888 psi | 64% | 2700 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 55,448 psi | 83% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,634 psi | 77% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,289 psi | 56% | 2572 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 80% | 51,169 psi | 77% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,076 psi | 63% | 2713 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,060 psi | 62% | 2740 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 41,698 psi | 63% | 2736 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 92% | 45,020 psi | 67% | 2844 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 98% | 52,968 psi | 79% | 3028 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,097 psi | 77% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,258 psi | 80% | 2913 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,693 psi | 52% | 2671 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,378 psi | 59% | 2625 fps | 96.8% |
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 74 powders for 7 mm STW loaded with the .284 | 150gr | Nosler Ballistic Silver Tip. Hodgdon Retumbo delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,156 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 150.0 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 2225, Alliant Reloder-33 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, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 150gr | Nosler Ballistic Silver Tip 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.