Load data for 7 mm STW + 160gr Speer Grand Slam
Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.650 in / 92.71 mm, and the max. allowed pressure is 66,717 PSI / 4,600 bar.
Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.650 in / 92.71 mm, and the max. allowed pressure is 66,717 PSI / 4,600 bar.
Load Specifications
ImperialMetric
Bullet:.284 | 160gr | Grand Slam
Cartridge:7 mm STW load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.470" | 11.9 mm
Case Capacity:97 gow | 6.29 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):66,717 psi | 4,600 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:13.0
Get PRO license to unlock all data and calculators
Community Loads for 7 mm STW + 160gr Speer Grand Slam
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 74.0 gr | 3.550" | — | 2850 fps | ••• | |
| 76.0 gr | 3.550" | — | 2912 fps | ••• | |
| 69.0 gr | 3.550" | — | 2741 fps | ••• | |
| ••• | 3.550" | — | 2882 fps | ••• | |
| ••• | 3.550" | — | 2710 fps | ••• | |
| ••• | 3.550" | — | 2930 fps | ••• | |
| ••• | 3.550" | — | 2962 fps | ••• | |
| ••• | 3.550" | — | 2774 fps | ••• | |
| ••• | 3.550" | — | 2917 fps | ••• | |
| ••• | 3.550" | — | 2804 fps | ••• | |
| ••• | 3.550" | — | 3055 fps | ••• | |
| ••• | 3.550" | — | 2882 fps | ••• | |
| ••• | 3.550" | — | 2872 fps | ••• | |
| ••• | 3.550" | — | 2931 fps | ••• | |
| ••• | 3.550" | — | 2724 fps | ••• | |
| ••• | 3.550" | — | 2845 fps | ••• | |
| ••• | 3.550" | — | 2989 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.