223 VS with 1 in 12 twist, definitely NO. I almost blew mine up. Remington 223 Police with 1 in 9 twist should be no problem.
I'd like to hear the justification of this comment. A slower twist generally reduces chamber pressure in every case I've seen.
I've had zero problems using M193 ammo in various .223 bolt actions but found an H&R .223 that showed signs of over pressure with the same ammo. I have not and probably would not(except under extreme emergency) try M-855 ammo in a .223 chamber.