I've got a 24" nwtf browning gold 3.5".... The gun punches paper incredibly with a pure gold .670 but it's just too tight for me to hunt with. I was considering a sumtoy .678-.680 for the gun to be like more forgiving. I've got a kicks .680 and it does decent. Nothing spectacular, does have some pretty patchy holes in pattern. I've just heard so many good things about sumtoy(William). A buddy just put in a order with William and I had him order me a 562.5 for my sx3 20ga. What do y'all think? I generally shoot Magnumblends. Also got pretty dang good stash of federal thug 3.5 5s and Winchester 3.5" 2oz HV and 2 1\4oz XX Magnum 5s.
My 24" gold did around 300 with Sumtoy .670 with hevi7s. For lead u may want to try .660 to .665
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