The chambers on the pumps and semi's seem to run on the tight side about 50% of the time in my experience.
I have 3 760's in 06, a carbine and 2 regular, datewise being manufactured 1952, 1965, and 1979 and all 3 require a full length resizing with a small base die for a shell fired from any other gun for these 3 to chamber the round.
Then I have 2 760's and a 7400 in .308 & 270 dating 70, 71, and 91 and these 3 will chamber a round fired from any other rifle with a regular full length resizing die.
