Got the itch for a .223. Things have changed since I last owned one ~15 years ago. There is a multitude of twists now available to stabilize heavier bullets. I am curious about stabilizing 50-55gr bullets in a 1:8 twist. Is 1:8 too much? Do fragile bullets come apart? or is all good and it opens up some options for heavier 60+gr bullets to shoot longer range? Or, just stick with the old 1:12 and forget the heavier bullets. FWIW: Long shots will be 5-600 yards, typical distances ~300.
