Load Specifications
Load data in caliber 7 mm STW with .284 | 140gr | Barnes BND SPIT-FIRE bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Accurate MAGPRO 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 58,856 psi | 88% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 59,582 psi | 89% | 3064 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 57,551 psi | 86% | 3127 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 59,611 psi | 89% | 3018 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 56,739 psi | 85% | 3068 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 58,566 psi | 88% | 3130 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,707 psi | 79% | 3025 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,282 psi | 71% | 2979 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,536 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,986 psi | 87% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 60,060 psi | 90% | 3114 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 58,682 psi | 88% | 3123 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 60,031 psi | 90% | 3091 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 59,973 psi | 90% | 3156 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,029 psi | 85% | 3127 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 59,930 psi | 90% | 3084 fps | 97% |
| Bofors RP15 | <<locked>> | 96% | 57,624 psi | 86% | 3107 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,680 psi | 83% | 3097 fps | 99.1% |
| Bofors RP5 | <<locked>> | 94% | 58,682 psi | 88% | 3123 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 57,609 psi | 86% | 3009 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 58,407 psi | 88% | 3117 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 57,348 psi | 86% | 3061 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 59,814 psi | 90% | 3077 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 58,349 psi | 87% | 3064 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,130 psi | 86% | 3048 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,855 psi | 85% | 2986 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 58,566 psi | 88% | 3232 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 58,349 psi | 87% | 3100 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 56% | 1952 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 59,625 psi | 89% | 3051 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,943 psi | 88% | 3031 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 59,872 psi | 90% | 3054 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,958 psi | 88% | 3048 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 56,449 psi | 85% | 3107 fps | 98.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,888 psi | 64% | 2877 fps | 96.2% |
| Lovex S065 | <<locked>> | 86% | 59,756 psi | 90% | 3028 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 58,146 psi | 87% | 3025 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 59,886 psi | 90% | 3045 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,101 psi | 86% | 3048 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 43,120 psi | 65% | 2907 fps | 98.5% |
| Norma MRP | <<locked>> | 92% | 58,885 psi | 88% | 3146 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,769 psi | 87% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 57,464 psi | 86% | 3130 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 56,753 psi | 85% | 3048 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,130 psi | 84% | 3058 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 57% | 1995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 60,002 psi | 90% | 3087 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 58,494 psi | 88% | 3117 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 60,191 psi | 90% | 3232 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,013 psi | 82% | 3110 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 82% | 59,190 psi | 89% | 3009 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 57,566 psi | 86% | 3035 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 59,582 psi | 89% | 3100 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 57,609 psi | 86% | 3009 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 59,756 psi | 90% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 58,146 psi | 87% | 3025 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,291 psi | 87% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 59,176 psi | 89% | 2982 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 59,146 psi | 89% | 3097 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 58,624 psi | 88% | 3002 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 59,596 psi | 89% | 3025 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 58,740 psi | 88% | 3048 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 60,205 psi | 90% | 3071 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 60,017 psi | 90% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 59,437 psi | 89% | 3035 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 59,886 psi | 90% | 3048 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 58,639 psi | 88% | 3038 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 58,334 psi | 87% | 3068 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 58,450 psi | 88% | 3143 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 58,610 psi | 88% | 3117 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,637 psi | 83% | 3117 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 59,364 psi | 89% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,537 psi | 86% | 3064 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 59,088 psi | 89% | 3179 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,391 psi | 85% | 3009 fps | 99.4% |
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% | 36,376 psi | 55% | 2628 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 48,530 psi | 73% | 2894 fps | 100% |
| Accurate MAGPRO | 73.5 gr | 86% | 46,456 psi | 70% | 2927 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 55,941 psi | 84% | 2966 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 40,393 psi | 61% | 2759 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 84% | 41,437 psi | 62% | 2808 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 92% | 40,190 psi | 60% | 2772 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 33,953 psi | 51% | 2664 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,238 psi | 69% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,969 psi | 81% | 3022 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,393 psi | 61% | 2753 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 38,827 psi | 58% | 2753 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,911 psi | 52% | 2654 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,385 psi | 46% | 2556 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,682 psi | 58% | 2799 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,823 psi | 79% | 2963 fps | 95.4% |
| Bofors RP15 | <<locked>> | 84% | 38,696 psi | 58% | 2746 fps | 95.5% |
| Bofors RP30 | <<locked>> | 90% | 39,392 psi | 59% | 2785 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 38,827 psi | 58% | 2753 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 50,676 psi | 76% | 2897 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 41,118 psi | 62% | 2795 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 80% | 50,096 psi | 75% | 2943 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 52,402 psi | 79% | 2956 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 44,193 psi | 66% | 2815 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,453 psi | 65% | 2802 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,685 psi | 65% | 2776 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 36,230 psi | 54% | 2766 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 50,183 psi | 75% | 2969 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 42% | 1749 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,209 psi | 69% | 2825 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,156 psi | 78% | 2923 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 46,021 psi | 69% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,844 psi | 64% | 2756 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 42,627 psi | 64% | 2848 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 98% | 40,001 psi | 60% | 2812 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 49,603 psi | 74% | 2871 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 47,993 psi | 72% | 2858 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 31,256 psi | 47% | 2497 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 46,398 psi | 70% | 2864 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 34,940 psi | 52% | 2710 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 38,130 psi | 57% | 2762 fps | 97% |
| Norma URP | <<locked>> | 80% | 47,369 psi | 71% | 2877 fps | 100% |
| Ramshot Grand | 69.9 gr | 84% | 39,668 psi | 59% | 2789 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 46,311 psi | 69% | 2874 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 35,549 psi | 53% | 2664 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 43% | 1791 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,631 psi | 73% | 2913 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,804 psi | 70% | 2930 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 33,199 psi | 50% | 2671 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 46,978 psi | 70% | 2966 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 55,405 psi | 83% | 2956 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,611 psi | 62% | 2740 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 39,726 psi | 60% | 2736 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 50,676 psi | 76% | 2897 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,603 psi | 74% | 2871 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 47,993 psi | 72% | 2858 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,868 psi | 82% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,689 psi | 73% | 2818 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,407 psi | 59% | 2733 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 55,013 psi | 82% | 2949 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 45,411 psi | 68% | 2785 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 44,643 psi | 67% | 2835 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,364 psi | 61% | 2723 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 52,736 psi | 79% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,805 psi | 73% | 2874 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 37,420 psi | 56% | 2648 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 48,225 psi | 72% | 2874 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,247 psi | 59% | 2736 fps | 99.6% |
| Vihtavuori N560 | 70.5 gr | 84% | 44,135 psi | 66% | 2881 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 41,582 psi | 62% | 2805 fps | 95% |
| Vihtavuori N568 | <<locked>> | 96% | 48,240 psi | 72% | 2982 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,124 psi | 72% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,299 psi | 75% | 2946 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,256 psi | 47% | 2674 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,985 psi | 55% | 2644 fps | 95% |
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 75 powders for 7 mm STW loaded with the .284 | 140gr | Barnes BND SPIT-FIRE. Hodgdon Retumbo delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,232 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 1:9.5 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, Accurate MAGPRO, Ramshot Grand rank at the top here: for 7 mm STW with the .284 | 140gr | Barnes BND SPIT-FIRE 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.