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					Originally Posted by  Dean Romig
					 
				 
				A brand new 2013 penny measures exactly .751" in four different locations across its diameter. 
			
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 Thank you (again!) Dean.  If my figures are right, a 12 gauge measures .729", a 13 ga.--.700, and a 14 ga.--.693, so a few hundredths less than .751" could be a 13 OR 14 gauge, since the 12 ga. brass was too large (.729)  What diameter is a 12b that I read about in one of the posts?  Is this a possibility for this gun?