I have one micrometer seater I’ve had for 40 yrs. It’s a .222 RCBS competition seater with sliding bullet guide and side feed for bullets. It has a special shell holder and is pretty neat. I don’t use it that much. It will also work for .223 and .22-204.
Most of the time, I’m loading batches of ammo for hogs and such, the std seater is adequate.
DF
