Flash hole

IheartGUNS · Oct 16, 2013

Came across several brass with a smaller flash hole. Can I just drill it out with a drill bit?

Otter · Oct 16, 2013

What caliber and brand of brass? Some brass like the 6BR, .308 Palma and the .220 Russian brass used for PPC cartridges have a small flash hole, and it is partly credited for the inherit accuracy of the round.

I suppose you could drill them out, but I doubt you could be really consistent with the final product. Minor difference could impact accuracy. But if you are not overly worried about accuracy, I don't see why not provided you stay within the larger flash hole spec.

IheartGUNS · Oct 16, 2013

I test drilled this case.

AMProducts · Oct 18, 2013

You can drill it out, however unless it's actually causing you issues I wouldn't bother.

Looking at the drawing for M80, the dimension should be .078"+.004" so a 5/64" drill would be perfect (.0761")

IheartGUNS · Oct 18, 2013

AMProducts said:
You can drill it out, however unless it's actually causing you issues I wouldn't bother.

Looking at the drawing for M80, the dimension should be .078"+.004" so a 5/64" drill would be perfect (.0761")

Yeah, I keep breaking the decapping pin lol. And the worst part is that lyman has bubblegumty warranty. I broke the rod and the pin and its $25 to replace not including shipping...