I've a 223AI that feeds like chit. I think a big help would be a chamfering of the chamber mouth. My smith ,GAP, didn't want to do it.
I've been using it as is but intend to get it fixed at some point.
Floor plate/follower tweaks didn't help much.
I've spoke to quite a few well known smiths and it is a recognized issue. Darrel Holland has his own version to to get by.
It is what it is. If yours feeds good great.
