Load data for 8 x 57 IRS + 170gr Hornady InterLock RN
Based on C.I.P., the max. allowed case length is 2.244 in / 57.00 mm, the max. cartridge length is 3.228 in / 82.00 mm, and the max. allowed pressure is 47,863 PSI / 3,300 bar.

Based on C.I.P., the max. allowed case length is 2.244 in / 57.00 mm, the max. cartridge length is 3.228 in / 82.00 mm, and the max. allowed pressure is 47,863 PSI / 3,300 bar.

Load Specifications
ImperialMetric
Bullet:.323 | 170gr | InterLock RN
Cartridge:8 x 57 IRS load data
Case Length (L3):2.244" | 57.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.505" | 12.8 mm
Case Capacity:64 gow | 4.15 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):47,863 psi | 3,300 bar
Barrel Length:23.6" | 600 mm
Min. Twist Rate:1:16.5
Get PRO license to unlock all data and calculators
Community Loads for 8 x 57 IRS + 170gr Hornady InterLock RN
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) |
|---|---|---|---|---|---|
| 44.0 gr | 2.835" | — | 2549 fps | ••• | |
| 46.0 gr | 2.835" | — | 2550 fps | ••• | |
| 48.3 gr | 2.835" | — | 2666 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.