ApexLOAD PRO Ballistics Calculator Logo
ApexLOAD PRO

Load data for .357 Maximum + 170gr Sierra JHC SportsMaster

85 suitable loads across 19 powder(s) for cartridge .357 Maximum with 170gr Sierra JHC SportsMaster bullet.

The most recommended powders for this combination are Vihtavuori N32C Tin Star, ReloadSwiss RS 14 and Hodgdon TrailBoss.

.357 Maximum cartridge with combo bulletSeated DepthL3 = 1.600 in / 40.64 mmL6 = 1.990 in / 50.55 mmSeated Depth = .350 in / 8.89 mm

Based on C.I.P., the max. allowed case length is 1.605 in / 40.77 mm, the max. cartridge length is 1.990 in / 50.55 mm, and the max. allowed pressure is 44,962 PSI / 3,100 bar.

Load Specifications

ImperialMetric
Bullet:.357 | 170gr | JHC SportsMaster
Cartridge:.357 Maximum load data
Case Length (L3):1.600" | 40.6 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.380" | 9.6 mm
Case Capacity:33.6 gow | 2.18 cm³
Primer Size:Small Pistol (SP)
Max. Pressure (C.I.P.):44,962 psi | 3,100 bar
Barrel Length:7.5" | 191 mm
Min. Twist Rate:Stabilizes in any common twist

Get PRO license to unlock all data and calculators

Community Loads for .357 Maximum + 170gr Sierra JHC SportsMaster

Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.

PowderCharge (gr)C.O.L.Barrel LengthVelocity (fps)Pressure (psi)

Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.