How do you identify which variant of the Model 52 one has. I got one from a friends estate and would like to know a little more about it. It is a single shot with a 28" barrel, S/N 1217xxx

That would be a 52D

Single shot. Interesting. Let us know how it shoots for you. My 52B is a tack driver.

So is my 52C Heavy Bbl.

I'll bet it is. Most 52's shoot lights out.. But where the 52 really shines is when you compare them to most any other 22lr. After shooting mine for the first time, I thought to myself I didn't know what I had been missing. From an accuracy standpoint, I have 2 other rifles that shoot just as well as my 52B, but they are clunky by comparison.