Oh Mike, oh Mike, sit down on my knee. Let me hold you. Those barrel borers lied to you about what they did to your barrels. Let me dry your eyes. Oh, you paid hundreds of dollars to fix the barrels that they fouled up. Oh, did you spend a few thousand dollars in entry fees for shoots where you missed a bunch of birds with those tight bored barrels? Oh, I'm so sorry. The long and the short of it is that backbored barrels may or may not improve patterns but they will 100% sure allow a separated case to lodge in the barrel and allow a new shell to be inserted behind the obstruction and blow up your gun. A backbored repeating shotgun or Darne is a smooth path to a blown up gun for an inattentive shooter. End of story.
