RE: Interesting thought
I have a single shot pistol for 45colts and 2.5 .410 it has a way full screw on straight fluted choke and a over sized "thread protecter" . Its a round bbl inside but with little bitty grooves huge lands . It shoots a 2 ft. circle at 15 ft with the thread protecter and every bit of full choke with the choke wanted to put a 45 through the choke but just couldnt do it . At any rate it threw bullets all over till I shot some slow "cowboy" loads then it shot ok 4-5 in at 25 yrds