I recently purchased a bore gauge to figure out why my double patterns great in one barrel and horrible in the other. Right barrel has even dispersal, good density, hits targets clay and feathered hard. The left barrel which is bored tighter is sparse and uneven. I noticed with the bore gauge while comparing chokes and bores that the right barrel has 3/4" of consistent measurement at the muzzle (only significant difference I can see). The left barrel continues to taper to the muzzle with no parallel. It kinda makes sense to me that this is the cause of the poor patterns. Will I benefit from boreing the choke to duplicate the 3/4" parallel section at the muzzle?
