I have a .22-250 built by a gunsmith buddy but the thing is a tank. He offered to take it back and build me a new gun a bit light for chasing dogs squirrels etc. I have easy access to .223 casings so thinking bout going back to the .223 and he mentioned maybe getting the .223AI. I have no experience with the round and cant find anythiing in the reloading bucks any suggestions? Anything special i need for case prep?