Gun choke shells?

[Bowguy]

In my Ithaca I ran some longbeards last year. Actually in 2 of em. X they both were similar n the ic665 shot the best w 1-3/4 oz loads. The factory briley .675 shot the 1-7/8 better

[DBuck90]

I have a 870 super mag I shoot a pattern master code black with Winchester longbeards 3-1/2 in.
2oz #6 and I get a great pattern but I also added a high quality set of sights to adjust my poa/poi 26 in barrel

[Jerseygti337]

Would the shorter 23" barrel be a consideration with the patterns or would it be just more of a velocity thing?