[Whisper in your ear]

I mic all new headstamps that I make from 223/5.56 brass. Well today while trying new brass I discovered something that may be benificial to all. Hornady,PMC and rorg are all too large and need to be neck turned if used. Keep in mind that the neck diameter of my chamber is approx. .335. Here are some of the numbers I found from the brass I did today.
Win / RP / FC .325 - .330
Lake city/MAL .330-.332
hornady .336
PMC/RORG .338 - .340
Hope this helps someone-
John