Barrel "tuning" is my pet peeve and just so much bullshiiit. Anyone thinks they can make a Perazzi (or similar) barrel "better" is living in a fantasy land. Like Neil Winston (google for info) commented - if a barrel "tuner" could make a barrel shoot like crap and then "fix" it so it shot like prize winner he'd believe the hype. There were, big surprise, no takers. And there is no empirical data to support ANY claims about ports and big bores - just hype and "it feels better" (since I pounded $1k into the work and it better be cuz I ain't gonna admit it's not) kinda reports.
I can understand to a point about opening chokes that are too tight for a particular game. Mutilating a primo barrel with screw-ins or ports should be criminalized. If the gun isn't what you want then get one that is and don't fook up something that may be irreplaceable.
Of course I'm only referring to quality guns and you can do anything you like to some junker.
JMO of course and I could GAF if you believe the BS
have another day
Dr.WtS
