I am looking at building a 6mm/223 aka 6x45mm. I don't want to spend alot of money on it. I need to hear from the skinflints on this one. I guess my first thing to do is find a used rifle in 223 Remington. I could go Savage or Remington and use a nut for switching barrels. Also thought about having the barrel rebored. How would you do it?