My wife's CTR is pretty chunky. Something like a chopped 1-8 tika lite is ideal.Too many wants, not enough time and $. Don't own a bolt 223 but been tempted on a 223 CTR since they introduced em, just sucks they seem to have short throats.
I have a heavy barreled 20" paper/steel shooting upper that has been getting fed 77 TMKs since they introduced them but it's a hog. Also have a 14.5" 7 twist upper that is about to get a TBAC adapter flash hider tacked on and would probably do well for whitetails but that's still not the same as a bolt rifle..