Lloyd3, wrote, "can you change choke effectively by cutting a barrel back?"

My answer is yes, to what extent I don't know. There are several elements to pattern distribution. Shot hardness or lack thereof, shot protection or lack thereof, wad configutation, velocity, and forcing cone/choke constriction.
To open up a pattern, especially in a gun made before 1960, I avoid 1-piece plastic shot cups unless they are the spreader type, instead I use card and fiber wads. Soft lead, card and fiber wads will not protect the shot and aid in pattern spread. Shot with high antimony and buffering in a 1-piece plastic wad should tighten patterns.
This thread has continued for 6 pages and I congratulate the forum members for their civility and willingness to give freely of their time and knowledge.


Jim