I am thinking about a set of Briley 12 g to 20 g Companion or Sidekick tubes and have some questions. I'm asking here because I'm more likely to get honest answers, good or bad:

Do the Briley tubes handle all of the the pressure of the shotgun shell or does some or all of that pressure still affect the original barrel

Will they work with a gun that has 2.5" chambers
Does it matter if the barrels are Damascus
How much does it affect the pattern in a 12 choked cylinder/open

Any other pros/cons I didn't think about?


I have become addicted to English hammered shotguns to the detriment of my wallet.