20 years ago I picked up a Heritage arms 10in. barreled single six in 22 lr. 22 wmr. No telling how many rounds have been put through this little revolver between my son's , son in law my daughter and myself. .problem is the cylinder has gotten a little lose. so I got to tinkering and came up with a solution. .a shim at the back of the cylinder. ..made from a 223 brass cartridge. ..