The CZ 527 is an excellent choice in .223 Remington. The rifle is a petite one in the standard Lux and American versions. It takes advantage of a mini-mauser action, which cannot be said for the majority of the other rifle manufacturers. Granted, the magazine hangs down, however, it becomes virtually unnoticeable after a short period of time. My CZ 527 Lux/American is super accurate, producing solid quarter inch groups with my handloads in 50 and 55 grain bullet configurations and Winchester 748 powder. In fact, I have shot many five shot groups which can be covered by a dime with it. By the way, the CZ 550 does not come in .223 Remington. The CZ 550 does, however, come in .22/250. Ig you'll scroll down to the CZ Forum on this site, you'll get more input on the rifles. In my opinion, the CZ 527 offers consumers the most rifle for the money on the market today. Coupled with the highly adjustable single-set trigger, it is a tremendous value. Tom Purdom