I picked up a bunch of range brass the other day, mostly 9mm. I decapped some and noticed that some of the cases have a noticably larger flash hole than normal. They, the odd ones, all have the same oversized hole. They are marked FC NT 9mm Luger.
I'm guessing that with a small charge of fast burning powder, it won't make a difference. But I would think that with a large charge of slow burning powder it might.
Any info or advice?
I'm guessing that with a small charge of fast burning powder, it won't make a difference. But I would think that with a large charge of slow burning powder it might.
Any info or advice?