That's an interesting question. I have been squadded with a couple of top level shooters who were using .223s. I had a detailed discussion with one of them when we shot in a 1000 yard team match a year ago. He was using a custom reamer he designed, 6.5 twist barrels if I recall correctly and crazy high H4895 powder charges resulting in a one and done case life for the Lapua brass. While his shooting was outstanding, I was left with no burning desire to pursue a long range .223 of my own.
