Quote Originally Posted by browningautorifleicon View Post
Those shims are available to you through sources like Brownells and people with little or no pistolsmithing knowledge or experience install them to "Tighten" something that isn't at fault to begin with. I'd suggest removing the offending shim and put the feeler gauges away, take it out and let fly. I think you'll find it will load, cycle, discharge and put a bullet downrange just fine. They aren't a Jerry Miculek special or even approaching it. They were to defend one's self. Put things back to original and enjoy.
I considered that, but with the shim removed, there is no clearance at the front of the cylinder, while the CHS is .078. So then it is a mystery, if the shim was not installed during the 1954 FTR, where did it come from? If it had an CAI import mark, that would explain things. How did armorers adjust the fore and aft position of the cylinder to assure the proper clearance on both ends?