So I have been back and forth with buying a rifle that shoots 7.62 but I do not have anything else that shoots that round, to simplify I plan on a bolt 223. I have two AR's and both are 5.56 so I am aware I can shoot 223 without any problems. My question is if I get a Remington 700 they only come in 223 as do most all other bolts, from what I can tell. I have done a little reading online and everyone seems to think on a bolt it doesn't matter which caliber I use. I have not 100% ruled out the Mossburg MVP or the new Ruger of which both of those are 5.56.