Whats your definition of "long range?" Since everyones definition is different its hard to reccomend you a gun. I know that a 223 will kill a coyote at 475 yards (lasered). You already know the advantages of each cartridge, so its going to be up to you as to what fits your bill better. If it was me I'd go for the 223 for the economical reason, and I know what it is capable of.