I have two of the CS carbines both in 223. The reason I bought the second one is because I have a thirteen year young daughter that loves to shoot mine so I bought another one so she can hunt with me. As she grows we can adjust the stock accordingly. I also have a Bushmaster Predator with the typical A-2 stock and the LOP is just to long for her to shoot it correctly. I also wear coveralls and all the warm clothing I can and it is just so easy to move the stock a couple of notches and your good to go.I almost forgot they both love the Federal premium 55 grain BTHP and Federal premium 55 grain nosler ballistic tips.
Seems like the majority of them like between 50 and 55 grain bullets. I like the 55 grain vmax myself in my bolt gun. Hopefully with a new AR style rifle I'll be able to keep using the same ammo with the same efficiency. I guess it all depends on the twist.