Concur...my 223AI and 20 Tactical are two of my best shooters223AI with a 1:8 or 1:7.5 twist.
At the time you could shoot the 222 and 222 mag in different versions. Some saw that they were at the end of that stage and were looking forward. Used to be a lot of experimenters. I was just suggesting an alternative.Sounds like some work on the red Russian