Guys (and gals), I've shot Smiths since I was a young cop and that's been a long time ago (1957 through 1979). We knew them as Combat Masterpieces, Highway Patrolman, Chiefs Special, stuff like that. So what the hell is a pinned barrel v. a non-pinned barrel, and what does "dash" mean? I own a Model 60 Stainless j-frame w/1 7/8" barrel and am considering trading it for a Model 60 Stainless .357 3" barrel NIB. But this pinned barrel and dash stuff mystifies me. I looked at my barrel where it fits into the frame and there is no pin I can see, so maybe it's not a pinned model.