In response to Bill Schodlatz, I have been called on to repair two guns with screw in chokes that bulged due to coarse (T) steel shot.In each case the damage was @ 2-3" back from muzzle in the choke cone section where the choke is at its thinnest. It's not an easy fix and not always successful.Suggest you examine your Briley tubes to make sure they put the cone outside the barrel profile.

Last edited by Hugh Lomas; 11/24/20 08:12 AM.
Hugh Lomas,
H.G.Lomas Gunmakers Inc.
920 876 3745