I've heard there's no need to "break in" a .22 caliber barrel. I want my first rifle (other than a Sears .22 that I got as a kid) treated properly as I dropped serious coin on my Daniel Defense M4. Should I just check for copper residue and clean it with a copper solvent after each of the first 5 rounds or so? I'll be hitting the range very soon with the AR, my new Savage .17 HMR with serious glass, and my new (used) Winchester Trapper in .45 Colt. Thanks for any help.