This technical load from Underwood Ammo is engineered for maximum trajectory consistency.
Propellant charge volumetric precision is monitored at a sub-milligram level to ensure a standard deviation (SD) of <12 FPS.
Manufacturer
Underwood Ammo
Asset Class
357 Sig
Unit Weight
125 GR
Muzzle Velocity
1475 FPS
Casing Interface
Brass
Box Index
50 Unit Node
Technical Assessment Notes
Manufacturing tolerances verified via optical micrometer to ±0.0001".
Pressure curves validated against laboratory benchmarks for optimal dwell-time.
Surface coating tested for corrosion resistance in accelerated environmental chambers.