I guess I'm the common caliber guy.  I dont hunt yet, usually punchin holes in paper.  So I'm running .308 win 175's in my rem. 700 in an AICS stock, and 77gr. smk's that I load in my 18" SPR .223 AR.  I like to keep them together so I can do some bulk loading and shoot more!  Oh and one of my favorite rifles is my .22lr, man its awesome with Wolf match.
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Brandon