I'm having a hell of a time with this insert and am wondering what I am doing wrong. I orient it in the barrel like so.


No matter how I adjust the contact lugs, once I tighten it, it looks as though the bullet will strike the side of the barrel. When I look down the bore, I see the choke end of the shotgun barrel. I am hesitant to modify the gun at all if the insert will never work...Thoughts?