I am refering to forcing cone extending from front of chamber to internal diameter of bore, in distinction to forcing cone extending from bore diameter to choke diameter. Latter forcing cone is what gets battered and bulged by bridging steel pellets traveling at near full muzzle velocity. At forcing cone in front of chamber, steel pellets are not traveling nearly so fast, but, do steel pellets still bridge and bulge barrel there, even with steel being much thicker? Or, does this just result in more pressure than old guns can tolerate for long?
Niklas
