After cleaning my turkey this past weekend, I noticed that the shot pellets recovered during the processing were square. I mean almost perfect looking squares!

My pattern aint the best in the world and it got me thinking that maybe this choke was to tight or something. I dont think its to tight, its the factory Mossberg "Ulti-Full" choke.

Or is it the loads?? Winchester Supreme Turkey Loads 3" #4's Not enough buffering in the shot???

Any thoughts on this??