HSM Ammunition .38 Special 158 Grain Hard Cast Semi Wadcutter Pistol Ammo 50 Rounds. 38 Special 158 Grain Hard Cast Semi Wadcutter Pistol Ammunition online at OpticsPlanet. This HSM Ammunition Ammunition features Semi Wadcutter (SWC) bullets that deliver powerful stopping power superior accuracy and consistency. With incredible savings on Ammunition and other superior pistol ammo from trusted brands like HSM Ammunition you re sure to find the ideal cartridge for your field or range use. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for HSM Ammunition .38 Special 158 Grain Hard Cast Semi Wadcutter Pistol Ammunition: Manufacturer: HSM Ammunition Caliber: .38 Special Number of Rounds: 50 Bullet Type: Semi Wadcutter (SWC) Bullet Weight: 158 grain Dimensions: 2.05 X 2.65 X 5.30 in Bullet Tip Material: Lead Package Contents: Hsm Ammunition Hsm 38 Special 158gr Hard Cast Swc 50rd 20bx/cs