Stevens 301 with chokes

Showing how the chokes go into shotguns. You can shoot bird shot , buck shot and slugs thru improved cylinder and modified choke. You can shoot the same in a full choke but don't shoot slugs in a full choke. Full choke gives tightest pattern while improved cylinder gives widest. Hope this helps some and in my 301 I use improved cylinder and shoot lots of slugs😄😄.