Now and then I have brass on hand that has undersized flash holes. Don’t know why some jokers make such stuff but when primer punch hits a wall, out comes the drill. .080” diameter. Life is normal afterwards and my Tourette’s fades away.
Good answer. I have settled on the #45 drill. It's a .082 size hole for .223. After getting several separated cases with larger holes and little additional accuracy I don't see the logic of going any bigger.
kwg
