Load Specifications
Load data in caliber 7 mm STW with .284 | 140gr | Nosler Expansion Tip bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Ramshot Grand.
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>> | 94% | 57,087 psi | 86% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,073 psi | 87% | 3048 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 59,074 psi | 89% | 3166 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 60,176 psi | 90% | 3169 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 82% | 58,450 psi | 88% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 59,393 psi | 89% | 3110 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 57,203 psi | 86% | 3114 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,329 psi | 77% | 3002 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,861 psi | 69% | 2953 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 59,495 psi | 89% | 3107 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 60,060 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 59,117 psi | 89% | 3107 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,550 psi | 85% | 3061 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,755 psi | 88% | 3094 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,246 psi | 86% | 3104 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 58,508 psi | 88% | 3074 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,421 psi | 88% | 3136 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 59,683 psi | 89% | 3166 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,871 psi | 88% | 3068 fps | 96.8% |
| Bofors RP15 | <<locked>> | 98% | 60,046 psi | 90% | 3146 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,056 psi | 81% | 3071 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 57,246 psi | 86% | 3104 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 60,089 psi | 90% | 3051 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,971 psi | 85% | 3100 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 86% | 60,002 psi | 90% | 3107 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 58,581 psi | 88% | 3061 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 57,014 psi | 85% | 3048 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 59,756 psi | 90% | 3091 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 59,292 psi | 89% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,058 psi | 86% | 3215 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,942 psi | 85% | 3084 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 55% | 1949 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,407 psi | 88% | 3035 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,030 psi | 87% | 3022 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 58,363 psi | 87% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,769 psi | 87% | 3031 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 59,088 psi | 89% | 3150 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 58,595 psi | 88% | 3015 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,695 psi | 85% | 3009 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,088 psi | 87% | 3022 fps | 100% |
| Norma 204 | <<locked>> | 88% | 59,901 psi | 90% | 3094 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,495 psi | 62% | 2874 fps | 98% |
| Norma MRP | <<locked>> | 92% | 57,290 psi | 86% | 3127 fps | 100% |
| Norma URP | <<locked>> | 88% | 60,191 psi | 90% | 3084 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,956 psi | 84% | 3107 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 59,364 psi | 89% | 3091 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,784 psi | 88% | 3097 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 57% | 1991 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 60,336 psi | 90% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 58,450 psi | 88% | 3071 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,072 psi | 86% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 58,581 psi | 88% | 3212 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,287 psi | 80% | 3087 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 57,595 psi | 86% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 60,147 psi | 90% | 3074 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 92% | 58,160 psi | 87% | 3081 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 60,089 psi | 90% | 3051 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,595 psi | 88% | 3015 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,695 psi | 85% | 3009 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 59,611 psi | 89% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,348 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,827 psi | 87% | 2966 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,711 psi | 87% | 3081 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 57,203 psi | 86% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,291 psi | 87% | 3009 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 57,159 psi | 86% | 3028 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 58,697 psi | 88% | 3051 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 58,639 psi | 88% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,276 psi | 87% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 58,494 psi | 88% | 3031 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 57,479 psi | 86% | 3025 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,608 psi | 85% | 3045 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,014 psi | 85% | 3123 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 56,927 psi | 85% | 3094 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,056 psi | 81% | 3091 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,059 psi | 87% | 2972 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 60,002 psi | 90% | 3107 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,232 psi | 86% | 3156 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 58,972 psi | 88% | 3051 fps | 99.6% |
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% | 34,911 psi | 52% | 2595 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 47,021 psi | 70% | 2871 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 41,075 psi | 62% | 2831 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 86% | 44,947 psi | 67% | 2897 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 54,998 psi | 82% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 39,175 psi | 59% | 2736 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 86% | 43,091 psi | 65% | 2851 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 41,742 psi | 63% | 2808 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 32,677 psi | 49% | 2628 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,668 psi | 59% | 2740 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 56,246 psi | 84% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,165 psi | 68% | 2881 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,562 psi | 79% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,305 psi | 59% | 2733 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,623 psi | 56% | 2726 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,678 psi | 50% | 2628 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,138 psi | 44% | 2520 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,275 psi | 56% | 2769 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,764 psi | 78% | 2943 fps | 95.1% |
| Bofors RP15 | <<locked>> | 84% | 37,318 psi | 56% | 2717 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 40,698 psi | 61% | 2818 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 37,623 psi | 56% | 2726 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 49,559 psi | 74% | 2881 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 39,798 psi | 60% | 2769 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 48,762 psi | 73% | 2923 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 51,416 psi | 77% | 2943 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 46,209 psi | 69% | 2858 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 45,223 psi | 68% | 2841 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,496 psi | 64% | 2759 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 37,579 psi | 56% | 2805 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 48,805 psi | 73% | 2946 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 41% | 1745 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,991 psi | 67% | 2805 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,024 psi | 76% | 2907 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 44,585 psi | 67% | 2815 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,556 psi | 67% | 2795 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 41,524 psi | 62% | 2825 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 48,457 psi | 73% | 2851 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,804 psi | 70% | 2841 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 31,894 psi | 48% | 2520 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 45,150 psi | 68% | 2841 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 35,897 psi | 54% | 2740 fps | 96% |
| Norma MRP | 66.9 gr | 80% | 36,680 psi | 55% | 2730 fps | 96.4% |
| Norma URP | <<locked>> | 80% | 46,180 psi | 69% | 2861 fps | 99.9% |
| Ramshot Grand | 71.4 gr | 86% | 41,379 psi | 62% | 2831 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 44,976 psi | 67% | 2851 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 36,869 psi | 55% | 2700 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 42% | 1785 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 56,028 psi | 84% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,108 psi | 71% | 2890 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,440 psi | 68% | 2910 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 34,287 psi | 51% | 2707 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 45,339 psi | 68% | 2940 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 54,056 psi | 81% | 2940 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 43,250 psi | 65% | 2779 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 38,537 psi | 58% | 2713 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 49,559 psi | 74% | 2881 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,457 psi | 73% | 2851 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,804 psi | 70% | 2841 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 55,608 psi | 83% | 2995 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,896 psi | 81% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,384 psi | 71% | 2799 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,218 psi | 57% | 2710 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 53,780 psi | 81% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,193 psi | 66% | 2762 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 43,134 psi | 65% | 2808 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,088 psi | 59% | 2697 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 51,576 psi | 77% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,659 psi | 71% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 36,274 psi | 54% | 2625 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 47,036 psi | 71% | 2858 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,666 psi | 56% | 2707 fps | 99.4% |
| Vihtavuori N560 | 70.3 gr | 84% | 42,743 psi | 64% | 2854 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 42,902 psi | 64% | 2838 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 96% | 46,688 psi | 70% | 2953 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,862 psi | 70% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,979 psi | 73% | 2927 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,776 psi | 45% | 2631 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,435 psi | 58% | 2680 fps | 95.6% |
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 79 powders for 7 mm STW loaded with the .284 | 140gr | Nosler Expansion Tip. Hodgdon Retumbo delivers the highest muzzle velocity at 3,215 fps; across all powders the maximum-charge window runs from 1,949 fps to 3,215 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 140.0 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 2225, Alliant Reloder-25 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. Vihtavuori N560, Norma MRP, Ramshot Grand rank at the top here: for 7 mm STW with the .284 | 140gr | Nosler Expansion 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.