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alanint · 12-21-2009, 01:46 PM

The rule of thumb for caliber determination around here is to take a #2 pencil. If it slides down the bore it is a 9MM, if it does not it is a .30

12-21-2009, 01:46 PM	#2
alanint User Join Date: Mar 2008 Location: Marco Island, Florida Posts: 4,867 Thanks: 1,685 Thanked 1,917 Times in 1,193 Posts	The rule of thumb for caliber determination around here is to take a #2 pencil. If it slides down the bore it is a 9MM, if it does not it is a .30