Load Specifications
Bullet Manufacturer:RWS
Bullet Weight:162 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:1:12.5
Load data in caliber 7 mm STW with .284 | 162gr | RWS Kegelspitz bullet and 136 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and Vihtavuori N568.
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% | 59,988 psi | 90% | 2867 fps | 100% |
| Accurate 3100 | <<locked>> | 90% | 59,553 psi | 89% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 60,263 psi | 90% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 59,959 psi | 90% | 2884 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 57,537 psi | 86% | 2963 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 59,132 psi | 89% | 2979 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 88% | 58,682 psi | 88% | 2972 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 57,421 psi | 86% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 56,927 psi | 85% | 2897 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 59,683 psi | 89% | 2976 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 59,248 psi | 89% | 2966 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 98% | 58,320 psi | 87% | 2946 fps | 100% |
| ADI AR 2217 | <<locked>> | 98% | 57,899 psi | 87% | 2943 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,723 psi | 82% | 2992 fps | 97.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,201 psi | 81% | 2982 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,942 psi | 85% | 2966 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,550 psi | 85% | 2959 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 57,624 psi | 86% | 2900 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 57,159 psi | 86% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,450 psi | 86% | 2887 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,116 psi | 86% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,000 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,536 psi | 85% | 2884 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 60,017 psi | 90% | 2966 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 59,538 psi | 89% | 2959 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 58,044 psi | 87% | 2874 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,580 psi | 86% | 2867 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 58,291 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,812 psi | 87% | 2936 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,856 psi | 88% | 2959 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,392 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 56,333 psi | 84% | 2976 fps | 97.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 55,927 psi | 84% | 2966 fps | 97.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 51,953 psi | 78% | 2894 fps | 96.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 51,343 psi | 77% | 2884 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 60,031 psi | 90% | 2930 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 59,640 psi | 89% | 2923 fps | 98.5% |
| Bofors RP15 | <<locked>> | 92% | 59,146 psi | 89% | 2953 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 58,740 psi | 88% | 2946 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 58,044 psi | 87% | 2959 fps | 99.9% |
| Bofors RP30 | <<locked>> | 96% | 57,609 psi | 86% | 2953 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 60,017 psi | 90% | 2966 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 59,538 psi | 89% | 2959 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 60,031 psi | 90% | 2969 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 59,596 psi | 89% | 2966 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 58,711 psi | 88% | 2907 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 88% | 58,305 psi | 87% | 2897 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,580 psi | 86% | 2890 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,116 psi | 86% | 2881 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,638 psi | 86% | 2812 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,348 psi | 86% | 2808 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 57,450 psi | 86% | 3028 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,942 psi | 85% | 3025 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,753 psi | 57% | 1847 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,695 psi | 56% | 1844 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 59,567 psi | 89% | 2877 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 59,350 psi | 89% | 2871 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 60,336 psi | 90% | 2874 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 60,060 psi | 90% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,885 psi | 88% | 2884 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,697 psi | 88% | 2877 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 57,957 psi | 87% | 2953 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 90% | 57,464 psi | 86% | 2946 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,141 psi | 78% | 2881 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,721 psi | 78% | 2877 fps | 99.5% |
| Lovex S065 | <<locked>> | 82% | 59,596 psi | 89% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 59,321 psi | 89% | 2844 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 58,204 psi | 87% | 2851 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 57,740 psi | 87% | 2844 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,870 psi | 87% | 2841 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,406 psi | 86% | 2835 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,101 psi | 86% | 2881 fps | 99.9% |
| Norma 204 | <<locked>> | 82% | 56,855 psi | 85% | 2874 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 53,301 psi | 80% | 2907 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,881 psi | 79% | 2904 fps | 100% |
| Norma MRP | <<locked>> | 88% | 60,321 psi | 90% | 2982 fps | 100% |
| Norma MRP | <<locked>> | 88% | 59,828 psi | 90% | 2976 fps | 100% |
| Norma URP | <<locked>> | 82% | 58,276 psi | 87% | 2867 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,754 psi | 87% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 59,422 psi | 89% | 2979 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 58,914 psi | 88% | 2972 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 57,087 psi | 86% | 2874 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 56,855 psi | 85% | 2871 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,812 psi | 87% | 2907 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,363 psi | 86% | 2900 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,638 psi | 58% | 1886 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,580 psi | 58% | 1883 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 60,118 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 59,321 psi | 89% | 2940 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 58,813 psi | 88% | 2930 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 58,465 psi | 88% | 3018 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 58,001 psi | 87% | 3012 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,812 psi | 87% | 2986 fps | 99.5% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,377 psi | 86% | 2976 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 57,769 psi | 87% | 2871 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 86% | 57,566 psi | 86% | 2864 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 86% | 56,623 psi | 85% | 2884 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 60,089 psi | 90% | 2930 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,596 psi | 89% | 2851 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,321 psi | 89% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,204 psi | 87% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,740 psi | 87% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,726 psi | 88% | 2808 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,247 psi | 87% | 2802 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 60,191 psi | 90% | 2936 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 59,727 psi | 90% | 2927 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 59,379 psi | 89% | 2861 fps | 99.6% |
| Somchem S361 | <<locked>> | 86% | 59,219 psi | 89% | 2858 fps | 99.6% |
| Somchem S365 | <<locked>> | 84% | 59,843 psi | 90% | 2871 fps | 100% |
| Somchem S365 | <<locked>> | 84% | 59,524 psi | 89% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,942 psi | 85% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 60,307 psi | 90% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 59,712 psi | 90% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 59,466 psi | 89% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,942 psi | 85% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,492 psi | 85% | 2831 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 60,031 psi | 90% | 2913 fps | 97.1% |
| Vihtavuori N170 | <<locked>> | 96% | 59,683 psi | 89% | 2907 fps | 97% |
| Vihtavuori N550 | <<locked>> | 82% | 58,972 psi | 88% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 58,740 psi | 88% | 2858 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 59,959 psi | 90% | 2900 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 59,466 psi | 89% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 59,669 psi | 89% | 2986 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 88% | 59,190 psi | 89% | 2979 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 56,768 psi | 85% | 2920 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 94% | 60,220 psi | 90% | 2969 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 96% | 58,175 psi | 87% | 2982 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 96% | 57,740 psi | 87% | 2976 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 98% | 59,451 psi | 89% | 3045 fps | 98.1% |
| Vihtavuori N570 | <<locked>> | 98% | 59,016 psi | 88% | 3038 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 59,263 psi | 89% | 2805 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 59,045 psi | 89% | 2802 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 58,059 psi | 87% | 2959 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,783 psi | 87% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,869 psi | 85% | 2848 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,449 psi | 85% | 2841 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% | 42,801 psi | 64% | 2602 fps | 99.8% |
| Accurate 3100 | <<locked>> | 80% | 42,540 psi | 64% | 2595 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 56,260 psi | 84% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 55,985 psi | 84% | 2828 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 46,630 psi | 70% | 2779 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 80% | 44,527 psi | 67% | 2726 fps | 96.8% |
| Accurate MAGPRO | <<locked>> | 80% | 44,121 psi | 66% | 2717 fps | 96.7% |
| ADI AR 2209 | <<locked>> | 80% | 46,891 psi | 70% | 2730 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 46,659 psi | 70% | 2726 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 42,177 psi | 63% | 2671 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 80% | 41,756 psi | 63% | 2661 fps | 97.2% |
| ADI AR 2217 | <<locked>> | 84% | 35,955 psi | 54% | 2526 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 84% | 35,752 psi | 54% | 2523 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 96% | 47,152 psi | 71% | 2844 fps | 95.5% |
| ADI AR 2218 | <<locked>> | 96% | 46,818 psi | 70% | 2838 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 28,776 psi | 43% | 2372 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 28,601 psi | 43% | 2369 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,137 psi | 71% | 2726 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,905 psi | 70% | 2723 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,838 psi | 81% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,548 psi | 80% | 2831 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,702 psi | 70% | 2720 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,470 psi | 70% | 2717 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,917 psi | 64% | 2677 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,482 psi | 64% | 2671 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,655 psi | 62% | 2621 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,336 psi | 62% | 2615 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,998 psi | 54% | 2556 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,752 psi | 54% | 2552 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,239 psi | 71% | 2785 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,760 psi | 70% | 2779 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,962 psi | 67% | 2772 fps | 95% |
| Alliant Reloder-33 | <<locked>> | 94% | 48,080 psi | 72% | 2831 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 98% | 48,167 psi | 72% | 2825 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,601 psi | 71% | 2815 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 46,456 psi | 70% | 2700 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 46,166 psi | 69% | 2694 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 39,871 psi | 60% | 2612 fps | 97.7% |
| Bofors RP15 | <<locked>> | 80% | 39,595 psi | 59% | 2605 fps | 97.6% |
| Bofors RP30 | <<locked>> | 82% | 35,926 psi | 54% | 2543 fps | 95.7% |
| Bofors RP30 | <<locked>> | 82% | 35,694 psi | 54% | 2539 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 42,917 psi | 64% | 2677 fps | 98.6% |
| Bofors RP5 | <<locked>> | 80% | 42,482 psi | 64% | 2671 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 34,127 psi | 51% | 2484 fps | 95.4% |
| Hodgdon H1000 | <<locked>> | 80% | 33,910 psi | 51% | 2480 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 44,701 psi | 67% | 2671 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 80% | 44,469 psi | 67% | 2664 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,990 psi | 66% | 2657 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,569 psi | 65% | 2648 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,691 psi | 76% | 2717 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,198 psi | 75% | 2707 fps | 100% |
| Hodgdon Retumbo | 66.8 gr | 80% | 35,128 psi | 53% | 2589 fps | 97.1% |
| Hodgdon Retumbo | 66.8 gr | 80% | 34,882 psi | 52% | 2582 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,239 psi | 42% | 1650 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,297 psi | 42% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,547 psi | 79% | 2772 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,272 psi | 78% | 2766 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,055 psi | 80% | 2776 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,794 psi | 79% | 2772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,788 psi | 69% | 2664 fps | 97.8% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,571 psi | 68% | 2661 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 80% | 40,814 psi | 61% | 2651 fps | 97% |
| IMR 7828 SSC | <<locked>> | 80% | 40,567 psi | 61% | 2644 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 90% | 37,115 psi | 56% | 2589 fps | 96% |
| IMR 8133 Enduron | <<locked>> | 90% | 36,724 psi | 55% | 2582 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 56,086 psi | 84% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 55,840 psi | 84% | 2795 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,578 psi | 82% | 2802 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,317 psi | 81% | 2795 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,912 psi | 55% | 2484 fps | 99% |
| Lovex S071 | <<locked>> | 80% | 36,666 psi | 55% | 2477 fps | 98.9% |
| Norma 204 | <<locked>> | 80% | 53,388 psi | 80% | 2822 fps | 99.8% |
| Norma 204 | <<locked>> | 80% | 53,156 psi | 80% | 2818 fps | 99.7% |
| Norma 217 | <<locked>> | 84% | 30,298 psi | 45% | 2434 fps | 95.4% |
| Norma 217 | <<locked>> | 84% | 30,095 psi | 45% | 2428 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 45,426 psi | 68% | 2746 fps | 99.7% |
| Norma MRP | <<locked>> | 80% | 45,150 psi | 68% | 2740 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 54,505 psi | 82% | 2815 fps | 100% |
| Norma URP | <<locked>> | 80% | 54,230 psi | 81% | 2812 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,959 psi | 61% | 2664 fps | 97.4% |
| Ramshot Grand | <<locked>> | 80% | 40,509 psi | 61% | 2654 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 80% | 53,476 psi | 80% | 2822 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 53,229 psi | 80% | 2818 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,753 psi | 55% | 2539 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 80% | 36,506 psi | 55% | 2533 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,080 psi | 44% | 1693 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 43% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 56,231 psi | 84% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 55,158 psi | 83% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 54,650 psi | 82% | 2874 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,360 psi | 52% | 2562 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,142 psi | 51% | 2556 fps | 97.9% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 39,392 psi | 59% | 2648 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 38,986 psi | 58% | 2641 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 47,688 psi | 71% | 2703 fps | 98.6% |
| Rottweil R 904 | <<locked>> | 80% | 47,471 psi | 71% | 2700 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 46,340 psi | 69% | 2713 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 46,050 psi | 69% | 2707 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 56,086 psi | 84% | 2802 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 55,840 psi | 84% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,578 psi | 82% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,317 psi | 81% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,969 psi | 82% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,694 psi | 82% | 2749 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,992 psi | 69% | 2707 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,701 psi | 69% | 2700 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 48,675 psi | 73% | 2694 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 48,298 psi | 72% | 2687 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 52,402 psi | 79% | 2769 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 52,069 psi | 78% | 2766 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,891 psi | 70% | 2690 fps | 99.6% |
| Somchem S385 | <<locked>> | 80% | 46,456 psi | 70% | 2684 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 55,869 psi | 84% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 55,622 psi | 83% | 2799 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 40,828 psi | 61% | 2569 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 80% | 40,596 psi | 61% | 2562 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 92% | 52,388 psi | 79% | 2795 fps | 95.4% |
| Vihtavuori N170 | <<locked>> | 92% | 52,040 psi | 78% | 2789 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 55,288 psi | 83% | 2812 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 55,013 psi | 82% | 2808 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 46,151 psi | 69% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 45,832 psi | 69% | 2690 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,121 psi | 68% | 2740 fps | 97.6% |
| Vihtavuori N560 | <<locked>> | 80% | 44,860 psi | 67% | 2733 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 37,623 psi | 56% | 2559 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 80% | 37,231 psi | 56% | 2552 fps | 95.3% |
| Vihtavuori N568 | 74.9 gr | 86% | 40,712 psi | 61% | 2667 fps | 95.2% |
| Vihtavuori N568 | 74.9 gr | 86% | 40,292 psi | 60% | 2661 fps | 95% |
| Vihtavuori N570 | 81.4 gr | 92% | 47,906 psi | 72% | 2848 fps | 95.4% |
| Vihtavuori N570 | 79.7 gr | 92% | 47,500 psi | 71% | 2841 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 55,317 psi | 83% | 2756 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 55,114 psi | 83% | 2753 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,682 psi | 59% | 2674 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,378 psi | 59% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,192 psi | 65% | 2621 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,786 psi | 64% | 2612 fps | 98.5% |
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 136 powders for 7 mm STW loaded with the .284 | 162gr | RWS Kegelspitz. Vihtavuori N570 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,045 fps. ADI AR 2218 gives the best case fill at 100 %, and 136 of the 136 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 1:12.5 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, Vihtavuori N570, Vihtavuori N568 rank at the top here: for 7 mm STW with the .284 | 162gr | RWS Kegelspitz 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.