Just picked up my first H&R revolver (mostly a Marlin guy). It is a six inch barrel 7 shot but which one. I read most of the other posts about these and the different variations. This one has Harrington & Richardson Arms Co. Worcester. Massachusetts U.S.A. marked on the top of the barrel, and no patent dates. The left side has H&R "PREMIER". The right side is marked 22 Rim Fire yes with a space. The star wheel has a hole in the middle. The serial number is 483027 marked on the frame and under the grips. The cylinder is marked 27 in two places. Yes I know the grips are not the correct ones. Any one help with the correct variation and are there disassembly instructions somewhere. The star wheel shows some significant wear and probably needs to be replaced. The gun is in very good shape and is tight except for the cyclinder not indexing correctly. Thanks Tom