Hi all, I took apart my brand new shotgun today to do an inspection of parts and to clean it. It still hasn't been fired by me. I am a complete newbie. Please see the attached pictures. Should the bottom of the front beat screw be slightly exposed inside the barrel? When I can my finger over it, I can slightly feel it. Wouldn't it get in the way of the shell coming out? Also, there is some scratches/roughness just inside the barrel on the muzzle end. Is this normal? Thanks for your time and patience for my newbie questions.