Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:168 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm STW load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:97 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:66,717 psi
Recommended Twist Rate:1:10.0
Load data in caliber 7 mm STW with .284 | 168gr | Berger Classic Hybrid Hunter bullet and 139 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 80 and Vihtavuori N570.
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>> | 90% | 59,190 psi | 89% | 2812 fps | 100% |
| Accurate 3100 | <<locked>> | 90% | 59,219 psi | 89% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 59,683 psi | 89% | 2831 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 59,466 psi | 89% | 2828 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 56,971 psi | 85% | 2910 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 58,247 psi | 87% | 2920 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 88% | 58,044 psi | 87% | 2917 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 56,608 psi | 85% | 2844 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 56,652 psi | 85% | 2844 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 58,914 psi | 88% | 2917 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 58,711 psi | 88% | 2913 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 57,421 psi | 86% | 2890 fps | 100% |
| ADI AR 2217 | <<locked>> | 98% | 57,203 psi | 86% | 2887 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,722 psi | 81% | 2933 fps | 97.7% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,563 psi | 80% | 2927 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 55,970 psi | 84% | 2907 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 55,753 psi | 84% | 2904 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,884 psi | 85% | 2841 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,681 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,014 psi | 85% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,753 psi | 85% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 59,988 psi | 90% | 2887 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 59,741 psi | 90% | 2884 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 59,263 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 59,074 psi | 89% | 2904 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,159 psi | 86% | 2815 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,159 psi | 86% | 2815 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,334 psi | 86% | 2884 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,363 psi | 86% | 2887 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,102 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 57,856 psi | 87% | 2900 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 59,611 psi | 89% | 2982 fps | 98.6% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 59,422 psi | 89% | 2982 fps | 98.6% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 50,908 psi | 76% | 2838 fps | 96.4% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 50,488 psi | 76% | 2828 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 59,466 psi | 89% | 2877 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 59,292 psi | 89% | 2871 fps | 98.6% |
| Bofors RP15 | <<locked>> | 92% | 58,407 psi | 88% | 2897 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 58,421 psi | 88% | 2897 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 57,319 psi | 86% | 2904 fps | 99.9% |
| Bofors RP30 | <<locked>> | 96% | 57,087 psi | 86% | 2900 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 59,263 psi | 89% | 2907 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 59,074 psi | 89% | 2904 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 60,263 psi | 90% | 2825 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 59,103 psi | 89% | 2910 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 58,871 psi | 88% | 2907 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 57,943 psi | 87% | 2848 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 88% | 57,957 psi | 87% | 2848 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,014 psi | 85% | 2835 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,782 psi | 85% | 2831 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,101 psi | 86% | 2756 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 56,840 psi | 85% | 2753 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,550 psi | 85% | 2972 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,333 psi | 84% | 2969 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,739 psi | 57% | 1801 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,666 psi | 56% | 1801 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 58,943 psi | 88% | 2818 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 58,987 psi | 88% | 2818 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 59,654 psi | 89% | 2818 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 59,640 psi | 89% | 2818 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,320 psi | 87% | 2825 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,320 psi | 87% | 2828 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 90% | 57,130 psi | 86% | 2897 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 90% | 57,159 psi | 86% | 2897 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,271 psi | 77% | 2828 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,053 psi | 77% | 2825 fps | 99.5% |
| Lovex S065 | <<locked>> | 82% | 59,030 psi | 88% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 59,030 psi | 88% | 2792 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 57,696 psi | 86% | 2799 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 57,479 psi | 86% | 2792 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,029 psi | 85% | 2785 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,058 psi | 86% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,536 psi | 85% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 84% | 60,350 psi | 90% | 2877 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,431 psi | 79% | 2854 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,199 psi | 78% | 2851 fps | 100% |
| Norma MRP | <<locked>> | 88% | 59,567 psi | 89% | 2927 fps | 100% |
| Norma MRP | <<locked>> | 88% | 59,335 psi | 89% | 2923 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,696 psi | 86% | 2812 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,464 psi | 86% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 58,479 psi | 88% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 58,494 psi | 88% | 2920 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 56,507 psi | 85% | 2818 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 60,220 psi | 90% | 2871 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 56,840 psi | 85% | 2848 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 56,884 psi | 85% | 2848 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,653 psi | 58% | 1844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,580 psi | 58% | 1841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 59,814 psi | 90% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 59,814 psi | 90% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 58,566 psi | 88% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 58,349 psi | 87% | 2881 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,377 psi | 86% | 2959 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,145 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,710 psi | 85% | 2927 fps | 99.5% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,521 psi | 85% | 2923 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 57,232 psi | 86% | 2815 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 86% | 57,232 psi | 86% | 2815 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 59,886 psi | 90% | 2881 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 59,683 psi | 89% | 2881 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 60,263 psi | 90% | 2825 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,030 psi | 88% | 2792 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,030 psi | 88% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,696 psi | 86% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,479 psi | 86% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,059 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,044 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 59,466 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 59,263 psi | 89% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 58,769 psi | 88% | 2808 fps | 99.6% |
| Somchem S361 | <<locked>> | 86% | 58,581 psi | 88% | 2805 fps | 99.6% |
| Somchem S365 | <<locked>> | 84% | 59,103 psi | 89% | 2812 fps | 100% |
| Somchem S365 | <<locked>> | 84% | 59,103 psi | 89% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 60,191 psi | 90% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 59,973 psi | 90% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 59,219 psi | 89% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 58,972 psi | 88% | 2799 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 59,973 psi | 90% | 2831 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 60,002 psi | 90% | 2831 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 59,161 psi | 89% | 2858 fps | 97.1% |
| Vihtavuori N170 | <<locked>> | 96% | 58,987 psi | 88% | 2854 fps | 97% |
| Vihtavuori N550 | <<locked>> | 82% | 58,334 psi | 87% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 58,378 psi | 88% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 59,161 psi | 89% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 59,161 psi | 89% | 2841 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 58,972 psi | 88% | 2930 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 88% | 58,740 psi | 88% | 2927 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 94% | 59,712 psi | 90% | 2920 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 94% | 59,524 psi | 89% | 2917 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 57,174 psi | 86% | 2927 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 96% | 57,232 psi | 86% | 2927 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 58,479 psi | 88% | 2989 fps | 98.2% |
| Vihtavuori N570 | <<locked>> | 98% | 58,276 psi | 87% | 2986 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 58,653 psi | 88% | 2753 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 58,450 psi | 88% | 2749 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,217 psi | 86% | 2904 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 56,956 psi | 85% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 60,234 psi | 90% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 60,017 psi | 90% | 2848 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% | 42,424 psi | 64% | 2552 fps | 99.8% |
| Accurate 3100 | <<locked>> | 80% | 42,235 psi | 63% | 2549 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 55,854 psi | 84% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 55,622 psi | 83% | 2779 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 46,267 psi | 69% | 2730 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 80% | 43,816 psi | 66% | 2671 fps | 96.9% |
| Accurate MAGPRO | <<locked>> | 80% | 43,816 psi | 66% | 2671 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 80% | 46,340 psi | 69% | 2677 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 46,325 psi | 69% | 2677 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 41,698 psi | 63% | 2618 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 80% | 41,510 psi | 62% | 2615 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 35,621 psi | 53% | 2484 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 84% | 35,462 psi | 53% | 2480 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 96% | 46,470 psi | 70% | 2792 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 96% | 46,325 psi | 69% | 2789 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 28,427 psi | 43% | 2329 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 28,413 psi | 43% | 2329 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,789 psi | 70% | 2677 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,615 psi | 70% | 2674 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,330 psi | 80% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,069 psi | 80% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,354 psi | 69% | 2674 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,180 psi | 69% | 2667 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,409 psi | 64% | 2628 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,206 psi | 63% | 2625 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,176 psi | 62% | 2572 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,988 psi | 61% | 2569 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,505 psi | 53% | 2507 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,476 psi | 53% | 2507 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,456 psi | 70% | 2730 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,209 psi | 69% | 2726 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,077 psi | 66% | 2717 fps | 95% |
| Alliant Reloder-33 | <<locked>> | 94% | 47,442 psi | 71% | 2785 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,065 psi | 71% | 2769 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 46,891 psi | 70% | 2762 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 46,035 psi | 69% | 2651 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 45,890 psi | 69% | 2648 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 39,479 psi | 59% | 2566 fps | 97.8% |
| Bofors RP15 | <<locked>> | 80% | 39,291 psi | 59% | 2562 fps | 97.8% |
| Bofors RP30 | <<locked>> | 82% | 35,491 psi | 53% | 2500 fps | 95.9% |
| Bofors RP30 | <<locked>> | 82% | 35,331 psi | 53% | 2493 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 42,409 psi | 64% | 2628 fps | 98.6% |
| Bofors RP5 | <<locked>> | 80% | 42,206 psi | 63% | 2625 fps | 98.6% |
| Bofors RP7 | <<locked>> | 80% | 56,550 psi | 85% | 2776 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 33,721 psi | 51% | 2438 fps | 95.6% |
| Hodgdon H1000 | <<locked>> | 80% | 33,576 psi | 50% | 2434 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 80% | 44,251 psi | 66% | 2621 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 80% | 44,063 psi | 66% | 2618 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,511 psi | 65% | 2605 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,337 psi | 65% | 2602 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,183 psi | 75% | 2661 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 49,966 psi | 75% | 2657 fps | 100% |
| Hodgdon Retumbo | 64.7 gr | 80% | 34,664 psi | 52% | 2539 fps | 97.2% |
| Hodgdon Retumbo | 64.7 gr | 80% | 34,650 psi | 52% | 2543 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 42% | 1611 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 42% | 1611 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,982 psi | 78% | 2717 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,982 psi | 78% | 2717 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,446 psi | 79% | 2720 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,431 psi | 79% | 2720 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,295 psi | 68% | 2612 fps | 97.8% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,281 psi | 68% | 2612 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 40,277 psi | 60% | 2602 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 80% | 40,248 psi | 60% | 2598 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,084 psi | 51% | 2484 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 88% | 33,939 psi | 51% | 2477 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 55,680 psi | 83% | 2746 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 55,448 psi | 83% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,172 psi | 81% | 2746 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 53,969 psi | 81% | 2743 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,593 psi | 55% | 2438 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 36,405 psi | 55% | 2434 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 52,968 psi | 79% | 2769 fps | 99.8% |
| Norma 204 | <<locked>> | 80% | 52,750 psi | 79% | 2766 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 29,921 psi | 45% | 2392 fps | 95.6% |
| Norma 217 | <<locked>> | 84% | 29,776 psi | 45% | 2388 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 44,991 psi | 67% | 2697 fps | 99.7% |
| Norma MRP | <<locked>> | 80% | 44,773 psi | 67% | 2694 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 54,070 psi | 81% | 2762 fps | 100% |
| Norma URP | <<locked>> | 80% | 53,838 psi | 81% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,350 psi | 60% | 2612 fps | 97.5% |
| Ramshot Grand | <<locked>> | 80% | 40,132 psi | 60% | 2608 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 53,055 psi | 80% | 2769 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 52,823 psi | 79% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,230 psi | 54% | 2490 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 80% | 36,187 psi | 54% | 2490 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,935 psi | 43% | 1647 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,008 psi | 43% | 1650 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 55,840 psi | 84% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 55,825 psi | 84% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 54,534 psi | 82% | 2828 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 54,317 psi | 81% | 2825 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 33,939 psi | 51% | 2516 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 33,794 psi | 51% | 2513 fps | 98.1% |
| ReloadSwiss RS 80 | 75 gr | 86% | 38,812 psi | 58% | 2602 fps | 95.5% |
| ReloadSwiss RS 80 | 75 gr | 86% | 38,609 psi | 58% | 2598 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 47,311 psi | 71% | 2654 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 80% | 47,108 psi | 71% | 2651 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 45,934 psi | 69% | 2661 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 45,745 psi | 69% | 2657 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 80% | 56,550 psi | 85% | 2776 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 55,680 psi | 83% | 2746 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 55,448 psi | 83% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,172 psi | 81% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 53,969 psi | 81% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,418 psi | 82% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,433 psi | 82% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,585 psi | 68% | 2657 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,397 psi | 68% | 2654 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 48,225 psi | 72% | 2641 fps | 98.3% |
| Somchem S361 | <<locked>> | 80% | 48,037 psi | 72% | 2641 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 51,721 psi | 78% | 2713 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 51,692 psi | 77% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,398 psi | 70% | 2641 fps | 99.7% |
| Somchem S385 | <<locked>> | 80% | 46,180 psi | 69% | 2635 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 55,492 psi | 83% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 55,303 psi | 83% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 40,509 psi | 61% | 2520 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 80% | 40,335 psi | 60% | 2516 fps | 98.6% |
| Vihtavuori N170 | <<locked>> | 92% | 51,808 psi | 78% | 2743 fps | 95.5% |
| Vihtavuori N170 | <<locked>> | 92% | 51,619 psi | 77% | 2740 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 54,781 psi | 82% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 54,563 psi | 82% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 45,672 psi | 68% | 2644 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 45,629 psi | 68% | 2644 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,715 psi | 67% | 2690 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 80% | 44,498 psi | 67% | 2684 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 37,043 psi | 56% | 2510 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 80% | 37,028 psi | 56% | 2510 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 86% | 40,016 psi | 60% | 2615 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 86% | 39,842 psi | 60% | 2612 fps | 95.2% |
| Vihtavuori N570 | 77.2 gr | 92% | 47,181 psi | 71% | 2795 fps | 95.5% |
| Vihtavuori N570 | 77.2 gr | 92% | 46,992 psi | 70% | 2792 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 54,868 psi | 82% | 2703 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 54,650 psi | 82% | 2700 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,131 psi | 59% | 2625 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 38,885 psi | 58% | 2618 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,583 psi | 64% | 2569 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,569 psi | 64% | 2569 fps | 98.6% |
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 139 powders for 7 mm STW loaded with the .284 | 168gr | Berger Classic Hybrid Hunter. Vihtavuori N570 delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,801 fps to 2,989 fps. ADI AR 2218 gives the best case fill at 100 %, and 139 of the 139 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 168.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, 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 80, Vihtavuori N570 rank at the top here: for 7 mm STW with the .284 | 168gr | Berger Classic Hybrid Hunter 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.