Disappointing Buckshot in Rem 870
I thought I would spring for the good stuff to feed my new 870 supermag waterfowl camo so I picked up a box of Federal Premium 18 ball 00 buckshot with flight control wad.
The shotgun has a 26" barrel with a "waterfowl" choke which seems to be roughly halfway between my other two shotguns with full choke and improved cyclinder
Anyway my target is 3'x3' and at 40 yards I'm ony getting 11 or 12 balls on target, but in a very tall, narrow oval . . . any ideas why I would be getting a pattern like this rather than the usual circle of shot?