Many guys may not have a tapered reamer. Just select a drill bit that goes in the primer hole, around 15/64,  and you can cut the plastic out. I did it about 10 years ago on 28ga and it worked great. I've never had the problem with 20 or 12ga Remingtons.
		 
		
		
		
		
		
		
			
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				Paul Harm
			 
		
		
		
		
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