RE: Remington 7400
Not a horrible rifle but you can do better. If you insist on a semi-auto the BAR is tops but of course costs more.
The 7400's biggest weakness is the the BAR's biggest strength. Chamber and bore! Browning hard chrome's the chamber and bore and they can take a lot of neglect and abuse. believe me, myMOTHERuses one year round.Remington does not chrome line. Not an issue with a bolt gun but an auto benefits from it.
7400's are bad about getting pitted chambers if not cleaned and oiled constantly. Once the chamber is pitted, extraction becomes a problem with that weak slip on extractor.