Appears to be a Canadian Centennial, there are two versions, 20"bbl, and I think 24". Mine is a 20" and a real shooter with almost any cast bullet I have fed it. Can be a bit fussy with bullet choices as far as feeding goes, it has no appreciable lead, other than that I have had zero negative issues.
I tend to shoot heavier bullets, from 170-200, but mostly 175's from a Lee 311041 clone at 1700-1900. 28-29grs. IMR 3031. Being a person that finds a good load and stays with it, I have not experimented with "new" loads.
I put a Lyman 66 on it as soon as I was able and can hold minute of rock out to 175yds, pop cans as well at 100 if the light is good.
I hope you enjoy yours every much as I do mine.
MOB