You might consider the Remington 552. It's a full sized semiauto rifle that shoots shorts, longs, long rifles and has a grooved receiver. I've owned a couple and still have one. Remington's been making them for over 60 years. I like the older ones.
No question the 550s are cool old school rifles but the owners of the only two 550s I knew said the floating chamber could be a problem sometimes.
Last edited by 43Shooter; 07/13/18.
