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					Originally Posted by  Robin Lewis
					 
				 
				Cast with candle wax.  It will be soft so working with it may be difficult to get an accurate measurement? 
			
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 I thought of that too, Robin, but I was worried about chamber damage and the wax getting stuck.  I don't think chamber damage would be an issue, though--I know of several people who "wax" the outside of their firearms rather than oil them.