3 mm
That is huge. That equals just over 0.118". Thanks for the input NVhntr. That's interesting. I have drilled some at .082 with a #45 drill bit and some at .086 with a #44 bit. The .082 drill is 2.1 mm and the .086 is 2.2 mm. This is in .223 brass. As I said before nothing seems to be consistent when it comes to hole size. I'm sure most of them are close to the 2 mm I read about on another forum but I have also seen some that I would guess are approaching 2.5 mm. Since I am drilling in the existing holes I can't do much about off center holes.

kwg

For liberals and anarchists, power and control is opium, selling envy is the fastest and easiest way to get it. TRR. American conservative. Never trust a white liberal. Malcom X Current NRA member.