Sorry guys, but you should not use a buffing or wire wheel of any kind on the face of the cylinder. The chamber throats will be wallowed out by the wheel. Use a soft cloth or a chemical only. 
An excellent product to remove carbon, copper or lead is RB-17 found here:
 http://www.rb-treasures.com/product3.html
		 
		
		
		
		
		
		
			
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				The three Rs: Respect for self; Respect for others; and responsibility for all your actions. 
 
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