Well I bought the .223 7.5 inch CSA in December when they were offered for sale with a decent discount. I didn't get to the range until March and I got a total of 2 rounds out of the firearm. I was using 62 gr Winchester rounds. I contacted the dealer and was told to deal with the warranty service from the distributor. I argued that this was basically a DOA purchase but the dealer dismissed me. Now this was a time when Tactical Ord was doing the warranty work and when I contacted him, he basically said that it would be quite a while. I sent the rifle to Tac Ord and got it back in about 3 weeks and they had replaced the bolt.
Due to having some rebuilding of my knees, I haven't got to the range to see how it will function with the new bolt. You will find that some people have had a lot of issues and spotty warranty response from the distributor. Others have had no problems or like me, decent service from the warranty repair. I understand that someone else is doing warranty work now, so I cannot comment on that.
I wish that I had done more research and probably would have steered clear of the CSA product. Perhaps newer production rifles are better in .223 but who knows. There seems to be far less complaints from those that bought the 7.62 products.
Just my two cents.