Nobody's gonna tell me neck sizing doesn't work for my 22 Hornet. My Hornet case bodies developed longitudinal splits after being full length sized just few times. That problem went away when I started neck sizing.

I don't know about AR's because I don't have one.
I've never had a longitudinal split on a 223 case.

I've been loading Hornets for 40 years. I get fine accuracy, my cases last longer, and I've never had problems neck sizing Hornets.