Patent ID: 7254913

Claim:
A firearm for firing high velocity ammunition, the firearm comprising: a frame; a barrel connected to the frame and having a longitudinal, cylindrical bore extending there through and a forcing cone formed in a rearward end of the barrel, wherein a surface of said forcing cone is provided with a reflective finish for reducing erosion from hot gases when the firearm is discharged; and at least one chamber operatively aligned with the barrel for housing a round of ammunition having a cartridge casing, wherein the chamber is adjustably spaced apart from the rearward end of the barrel by way of at least one removable spacer, wherein said spacer is located at a forward end of the barrel opposite said rearward end of the barrel; wherein the frame is provided with a firing pin aperture extending through a bushing-less, integral bolster face portion of the frame proximate a rearward side of the at least one chamber, said bolster face portion being hardened for supporting the casing during discharge.