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jepp2 · May 12, 2012, 09:13 PM

I have run into undersize flashholes on some 5.56 military brass. I just used the appropriate number drill bit to enlarge them. For folks really interested in accuracy, they will find the largest flashhole of the lot, and enlarge the others so they are all the same size.

I use the Lyman flash hole uniformer, but I use it to remove the nub on the inside of the web from where the flashhole was punched. No reason why you couldn't drill them out with the Lyman tool. If yours are that small, you might want to chuck up the Lyman tool in a drill. Otherwise it would be a lot of turning.

May 12, 2012, 09:13 PM	#2
jepp2 Senior Member Join Date: December 24, 2008 Location: Loveland, CO Posts: 1,476	I have run into undersize flashholes on some 5.56 military brass. I just used the appropriate number drill bit to enlarge them. For folks really interested in accuracy, they will find the largest flashhole of the lot, and enlarge the others so they are all the same size. I use the Lyman flash hole uniformer, but I use it to remove the nub on the inside of the web from where the flashhole was punched. No reason why you couldn't drill them out with the Lyman tool. If yours are that small, you might want to chuck up the Lyman tool in a drill. Otherwise it would be a lot of turning.