It has been a while since I had a shotgun or used one as I have been focusing on pistols and rifles for a couple years. I decided it was time to get an entry level shotgun to start practicing with again. I picked up an 870 turkey with a 21 inch barrel. When I received I noticed the receiver and barrel alignment was crooked and the holes that are drilled in the receiver for mounting scopes or red dots were not drilled center.


I sent it to remington letting them know what was wrong and the sent it back with a note saying they adjusted the barrel alignment to the receiver, which it looks like they did. However, they said the holes were centered which they clearly are not they are about 1/32 of inch closer to the left for the rear holes. The front hole is centered so it kinda goes at a slight angle. I am hoping it wont cause a problem (since it is closer to center alignment than before) if i ever want to mount a dot sight on it.


I am not sure how they adjusted the barrel alignment there is not welding marks or anything in the receiver and the barrel and receiver were not replaced.
I took it to the range and shot some slugs and it clicked and didnt go boom for 2 shots but that was right at the beginning and it worked fine after that for 20 slugs. I think there must have been some crud in the firing pin channel. The firing pin and spring look fine. It shot really accurate.
Upon cleaning it I noticed some gouges/peening and scratches in the barrel extension where the top of the bolt locks up and on the face of the barrel. Is this normal or self limiting? or is this a problem?


In my quest to determine why the holes in my receive were drilled a little off center I started taking measurements of the receiver. I noticed the flat on the left side is shorter than the right. Again, is this normal? I know this may seem stupid but i am tring to find out why they said the receiver was drilled properly. I couldn't find any 870 receiver blueprints online so I am asking here.

Thanks for any answers you provide and sorry for what might seem like stupid questions. I am just being a little picky since I was having problems with the gun out of the box. It didn't instill a lot of confidence.