Noted. Although patterns are funny thing... Your choice of choke & shell has a huge effect on what your shotgun will pattern like.
In my case, I chose the 3.5" #2 shell because it patterns well & puts more pellets into that pattern. A thinner pattern (less pellets) results in fewer hits on target.
In my doubles at least, low brass upland shells pattern rather better than high brass ones. Reading up on it back in the day, I decided that it's because the greater powder loads blew through the shot column and therefore disrupted the uniformity of the pattern. The effect was of course more noticeable on moving targets.
Maybe it's me, but I find low brass upland rounds hard to find these days, glad I bought a case of them to hunt with and can do practice shooting with target rounds.


















































