Load Specifications
Load data in caliber 7 mm STW with .284 | 162gr | Hornady BTHP bullet and 73 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 ReloadSwiss RS 80.
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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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>> | 90% | 57,058 psi | 86% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,566 psi | 86% | 2848 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 59,915 psi | 90% | 2989 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 58,450 psi | 88% | 2917 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 56,768 psi | 85% | 2927 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 59,001 psi | 88% | 2953 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,474 psi | 77% | 2927 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,432 psi | 80% | 2917 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 58,639 psi | 88% | 2910 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,740 psi | 88% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,957 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,116 psi | 86% | 2923 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,755 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,943 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 59,930 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,898 psi | 85% | 2986 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,479 psi | 86% | 2887 fps | 98% |
| Bofors RP15 | <<locked>> | 94% | 60,104 psi | 90% | 2966 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 58,653 psi | 88% | 2966 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 57,116 psi | 86% | 2923 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,682 psi | 88% | 2848 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,550 psi | 85% | 2920 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 58,885 psi | 88% | 2904 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 60,089 psi | 90% | 2920 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,885 psi | 88% | 2904 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,885 psi | 88% | 2825 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,783 psi | 87% | 3038 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 59,988 psi | 90% | 2943 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,492 psi | 56% | 1827 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,145 psi | 86% | 2838 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 59,930 psi | 90% | 2867 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,885 psi | 87% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 60,234 psi | 90% | 2897 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 58,842 psi | 88% | 2966 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,023 psi | 73% | 2831 fps | 99% |
| Lovex S065 | <<locked>> | 82% | 57,450 psi | 86% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 59,553 psi | 89% | 2867 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,523 psi | 88% | 2848 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,595 psi | 88% | 2897 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 49,777 psi | 75% | 2858 fps | 100% |
| Norma MRP | <<locked>> | 88% | 57,276 psi | 86% | 2943 fps | 100% |
| Norma URP | <<locked>> | 84% | 59,480 psi | 89% | 2881 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 56,014 psi | 84% | 2930 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 58,436 psi | 88% | 2894 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,856 psi | 88% | 2920 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 58% | 1867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,682 psi | 86% | 2871 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,362 psi | 84% | 2900 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,929 psi | 88% | 3028 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 58,247 psi | 87% | 2992 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 59,117 psi | 89% | 2884 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 57,812 psi | 87% | 2897 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,682 psi | 88% | 2848 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,450 psi | 86% | 2815 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 59,553 psi | 89% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 60,307 psi | 90% | 2822 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,392 psi | 86% | 2894 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 56,971 psi | 85% | 2822 fps | 99.3% |
| Somchem S365 | <<locked>> | 84% | 56,898 psi | 85% | 2835 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,189 psi | 87% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,261 psi | 86% | 2822 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,943 psi | 87% | 2848 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 56,956 psi | 85% | 2864 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 82% | 56,463 psi | 85% | 2825 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,985 psi | 85% | 2861 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,797 psi | 85% | 2940 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 94% | 57,246 psi | 86% | 2927 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 58,711 psi | 88% | 2992 fps | 99.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 60,089 psi | 90% | 3054 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,782 psi | 85% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 59,117 psi | 89% | 2907 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 58,610 psi | 88% | 2972 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,986 psi | 87% | 2861 fps | 100% |
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% | 40,727 psi | 61% | 2562 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 53,809 psi | 81% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 41,989 psi | 63% | 2674 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 44,788 psi | 67% | 2690 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 80% | 40,059 psi | 60% | 2625 fps | 96.4% |
| ADI AR 2217 | <<locked>> | 86% | 36,608 psi | 55% | 2543 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 98% | 47,892 psi | 72% | 2854 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 82% | 29,196 psi | 44% | 2388 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,107 psi | 68% | 2687 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,343 psi | 77% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,686 psi | 67% | 2680 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,683 psi | 61% | 2631 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,392 psi | 59% | 2582 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,098 psi | 51% | 2513 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,324 psi | 66% | 2740 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 48,791 psi | 73% | 2848 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,442 psi | 71% | 2713 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 37,840 psi | 57% | 2569 fps | 96.9% |
| Bofors RP30 | <<locked>> | 84% | 36,318 psi | 54% | 2559 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 40,683 psi | 61% | 2631 fps | 97.9% |
| Bofors RP7 | <<locked>> | 80% | 55,042 psi | 83% | 2795 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 34,824 psi | 52% | 2500 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 55,201 psi | 83% | 2851 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,627 psi | 64% | 2625 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,916 psi | 63% | 2612 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,327 psi | 72% | 2677 fps | 100% |
| Hodgdon Retumbo | 64.3 gr | 80% | 33,301 psi | 50% | 2539 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 55,912 psi | 84% | 2884 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 42% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,517 psi | 76% | 2736 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 56,260 psi | 84% | 2812 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,792 psi | 76% | 2740 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,961 psi | 66% | 2625 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 80% | 38,769 psi | 58% | 2605 fps | 96.1% |
| IMR 8133 Enduron | <<locked>> | 92% | 37,188 psi | 56% | 2598 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 53,940 psi | 81% | 2766 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,431 psi | 79% | 2762 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,056 psi | 53% | 2441 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 51,155 psi | 77% | 2782 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 30,516 psi | 46% | 2444 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 43,091 psi | 65% | 2703 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 52,170 psi | 78% | 2779 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,551 psi | 58% | 2612 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 80% | 51,169 psi | 77% | 2785 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,722 psi | 52% | 2493 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,950 psi | 43% | 1677 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 54,041 psi | 81% | 2818 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,417 psi | 79% | 2841 fps | 100% |
| ReloadSwiss RS 76 | 68.8 gr | 80% | 32,430 psi | 49% | 2513 fps | 97% |
| ReloadSwiss RS 80 | 76.3 gr | 88% | 39,813 psi | 60% | 2664 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 45,687 psi | 68% | 2664 fps | 98% |
| Rottweil R 905 | <<locked>> | 80% | 44,193 psi | 66% | 2671 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 80% | 55,042 psi | 83% | 2795 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,940 psi | 81% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,431 psi | 79% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,968 psi | 79% | 2720 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,845 psi | 66% | 2664 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 46,673 psi | 70% | 2654 fps | 97.6% |
| Somchem S365 | <<locked>> | 80% | 49,879 psi | 75% | 2736 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,686 psi | 67% | 2648 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 53,635 psi | 80% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,943 psi | 58% | 2526 fps | 97.9% |
| Vihtavuori N170 | <<locked>> | 94% | 53,359 psi | 80% | 2805 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 52,968 psi | 79% | 2776 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,976 psi | 66% | 2661 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,902 psi | 64% | 2694 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 82% | 38,072 psi | 57% | 2572 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 88% | 40,959 psi | 61% | 2677 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 48,312 psi | 72% | 2858 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,055 psi | 80% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 55,419 psi | 83% | 2854 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,927 psi | 55% | 2628 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,133 psi | 62% | 2579 fps | 98% |
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 73 powders for 7 mm STW loaded with the .284 | 162gr | Hornady BTHP. Vihtavuori N570 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,054 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 162.0 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 2218, ADI AR 2225 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, ReloadSwiss RS 80 rank at the top here: for 7 mm STW with the .284 | 162gr | Hornady BTHP 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.