Load Specifications
Load data in caliber 7 mm STW with .284 | 140gr | Ferrobull Tripple Expand Jagd bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, ReloadSwiss RS 76 and Hodgdon Retumbo.
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% | 59,045 psi | 89% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 59,901 psi | 90% | 3074 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 58,305 psi | 87% | 3143 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 59,915 psi | 90% | 3031 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 57,203 psi | 86% | 3077 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 59,393 psi | 89% | 3150 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,417 psi | 80% | 3041 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,776 psi | 72% | 2992 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,363 psi | 86% | 3074 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,290 psi | 86% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 58,363 psi | 87% | 3087 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,681 psi | 85% | 3064 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 59,408 psi | 89% | 3140 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,695 psi | 85% | 3048 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,681 psi | 85% | 3110 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,667 psi | 86% | 3136 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,855 psi | 85% | 3038 fps | 96.6% |
| Bofors RP15 | <<locked>> | 96% | 58,276 psi | 87% | 3120 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,405 psi | 85% | 3110 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 59,408 psi | 89% | 3140 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,899 psi | 87% | 3022 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 59,234 psi | 89% | 3133 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 57,812 psi | 87% | 3074 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 60,162 psi | 90% | 3091 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 58,856 psi | 88% | 3081 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,653 psi | 86% | 3061 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,377 psi | 86% | 2995 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 59,524 psi | 89% | 3248 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 58,929 psi | 88% | 3114 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 56% | 1959 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 60,104 psi | 90% | 3064 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 59,321 psi | 89% | 3045 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 60,249 psi | 90% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 59,466 psi | 89% | 3061 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 57,261 psi | 86% | 3123 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,192 psi | 65% | 2887 fps | 96.5% |
| Lovex S065 | <<locked>> | 86% | 60,191 psi | 90% | 3041 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 58,494 psi | 88% | 3038 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 60,292 psi | 90% | 3054 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,508 psi | 86% | 3061 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 43,424 psi | 65% | 2910 fps | 98.6% |
| Norma MRP | <<locked>> | 92% | 59,567 psi | 89% | 3159 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,276 psi | 87% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 58,262 psi | 87% | 3143 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 57,116 psi | 86% | 3058 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,913 psi | 85% | 3071 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,971 psi | 57% | 2005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 60,336 psi | 90% | 3097 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 59,219 psi | 89% | 3130 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,710 psi | 85% | 3182 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,985 psi | 84% | 3130 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 82% | 59,393 psi | 89% | 3018 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 58,189 psi | 87% | 3048 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 60,205 psi | 90% | 3114 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 57,899 psi | 87% | 3022 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 60,191 psi | 90% | 3041 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 58,494 psi | 88% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,595 psi | 88% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 59,509 psi | 89% | 2995 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 59,756 psi | 90% | 3110 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 58,711 psi | 88% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 60,104 psi | 90% | 3038 fps | 98.8% |
| Somchem S365 | <<locked>> | 88% | 59,205 psi | 89% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,579 psi | 85% | 3022 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 60,292 psi | 90% | 2979 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 59,944 psi | 90% | 3045 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,463 psi | 85% | 3002 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 59,234 psi | 89% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 58,769 psi | 88% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 59,176 psi | 89% | 3159 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 98% | 59,234 psi | 89% | 3133 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,492 psi | 85% | 3133 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 59,915 psi | 90% | 2995 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,044 psi | 87% | 3077 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 60,191 psi | 90% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,811 psi | 85% | 3022 fps | 99.5% |
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% | 36,201 psi | 54% | 2625 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 48,646 psi | 73% | 2900 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 46,789 psi | 70% | 2936 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 56,260 psi | 84% | 2979 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 40,480 psi | 61% | 2766 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 41,568 psi | 62% | 2818 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 92% | 40,393 psi | 61% | 2782 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 33,837 psi | 51% | 2664 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,988 psi | 61% | 2769 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,586 psi | 70% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 54,375 psi | 82% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,582 psi | 61% | 2759 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 82% | 39,102 psi | 59% | 2759 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,896 psi | 52% | 2654 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,197 psi | 45% | 2552 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,899 psi | 58% | 2802 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,229 psi | 80% | 2979 fps | 95.7% |
| Bofors RP15 | <<locked>> | 84% | 38,754 psi | 58% | 2749 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 39,494 psi | 59% | 2789 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 39,102 psi | 59% | 2759 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 50,749 psi | 76% | 2904 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 88% | 38,435 psi | 58% | 2740 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 50,372 psi | 76% | 2953 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 52,794 psi | 79% | 2972 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 44,512 psi | 67% | 2828 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,569 psi | 65% | 2808 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,830 psi | 66% | 2785 fps | 100% |
| Hodgdon Retumbo | 71.4 gr | 86% | 36,332 psi | 54% | 2769 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 50,749 psi | 76% | 2982 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 42% | 1759 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,282 psi | 69% | 2835 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,373 psi | 79% | 2936 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 46,050 psi | 69% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 43,018 psi | 64% | 2766 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 86% | 42,917 psi | 64% | 2858 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 40,277 psi | 60% | 2818 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 49,647 psi | 74% | 2874 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 48,182 psi | 72% | 2867 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,937 psi | 46% | 2493 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 46,644 psi | 70% | 2874 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 35,099 psi | 53% | 2717 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 38,203 psi | 57% | 2762 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 47,674 psi | 71% | 2887 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,871 psi | 60% | 2799 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 46,528 psi | 70% | 2881 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 35,534 psi | 53% | 2664 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,369 psi | 43% | 1798 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,762 psi | 73% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,253 psi | 71% | 2940 fps | 100% |
| ReloadSwiss RS 76 | 74.7 gr | 84% | 33,228 psi | 50% | 2674 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,947 psi | 66% | 2907 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 55,666 psi | 83% | 2966 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,684 psi | 62% | 2746 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 39,885 psi | 60% | 2746 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 50,749 psi | 76% | 2904 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,647 psi | 74% | 2874 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 48,182 psi | 72% | 2867 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 55,172 psi | 83% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,675 psi | 73% | 2822 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,566 psi | 59% | 2740 fps | 96.2% |
| Somchem S355 | <<locked>> | 80% | 55,085 psi | 83% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 42,627 psi | 64% | 2733 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 44,730 psi | 67% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,350 psi | 60% | 2726 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 53,040 psi | 80% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,095 psi | 74% | 2884 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,012 psi | 52% | 2595 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 48,385 psi | 73% | 2884 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,131 psi | 59% | 2736 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 44,396 psi | 67% | 2890 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 41,727 psi | 63% | 2812 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 96% | 48,805 psi | 73% | 2995 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,501 psi | 73% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,589 psi | 76% | 2959 fps | 99.6% |
| Winchester StaBALL HD | 68.2 gr | 80% | 31,415 psi | 47% | 2667 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,014 psi | 55% | 2648 fps | 95.2% |
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 | 140gr | Ferrobull Tripple Expand Jagd. Hodgdon Retumbo delivers the highest muzzle velocity at 3,248 fps; across all powders the maximum-charge window runs from 1,959 fps to 3,248 fps. ADI AR 2217 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 140.0 gr projectile in 0.284" calls for a 1:11.5 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. Winchester StaBALL HD, ReloadSwiss RS 76, Hodgdon Retumbo rank at the top here: for 7 mm STW with the .284 | 140gr | Ferrobull Tripple Expand Jagd 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.