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			I have the 7400 and never have had a problim the gun was bought in 86. 
I know of a few 742s and every thing i have seen of them is the chambers have to be keept clean or they will jam they are not a gun that you just put up when you are done hunting. 
I dont think i could leave mine home when hunting bears i have a 2/7 simmons on it with 180 grain silver tips they go crunch. 
They are real populer here in mich.
		 
		
		
		
		
		
		
		
		
	
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