Re: .204 Ruger or .223 Remington ???
You already have a .243 for longer range, or those particularly windy days. The 204 is flatter shooting, lower recoil (neither will beat you up), and barrel life difference will be minimal.
"My greatest fear is that after my demise my wife will sell my guns for the price I told her I paid for them"
-don't know where it came from...but true