all good points. i've got a shotgun barrel i could cut down and have done. would a short barrel with choke spread faster than a long barrel with the same choke?
Thats pretty much been debunked as a wives tale... Old time thinking was a longer barrel patterened better for long ranges... What a longer barrel does is swing smoother, while a shorter barrel swings faster. Follow thru in enhansed with a langer barrel and there for many people hit better with it. But its shooting form and fundamantals, not barrel length.
Look at modern turkey guns, these guns NEED tight patterns and if there where better with long barrels you can bet your last $$ they would have them.
If your gonna shorten it, be sure its square or have the GS square the barrel first!!
Good luck, CW