I was looking for something else but found this. Not perfect by any means, but nice so I bought it. I don't know very much about single actions and this one is already confusing me. Serial number is 372776. It came with a .22 LR cylinder etched with the last 3 digits of the serial number. Called Ruger and they told me it was a .22 mag manufactured in the late 50s. RENE seem to suggest it is a .22 LR manufactured in 1963 and it's an RSSM if I'm reading it correctly. Can any of you single six experts tell me what I have?

