Craig sends us some interesting information, but his observation about frame sizes larger than #4 in hammer guns is a bit incorrect.  Hammer guns of ten gauge in frame sizes larger than #4  are rare, #5 almost nonexistent except in very early eight gauge.  In sixty some years of collecting, I have never seen a #7 frame hemmer ten gauge.  I would like to see one.  #7 frame hammer eight gauges are the most often seen.
		 
		
		
		
		
		
		
		
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