I got a 10 in. barrel in .222 for my Contender also. I`ve also been getting sub moa groups with the Serria 40 gn Blitz King bullets with WC 844 powder. I`m trying to get that shot up and then start on the 48 lbs. of 2230-c I bought. I have been loading the 2230-c in my .204 and getting sub moa groups with the 39 gn. Serrias and sub 1/2 moa groups with the 32 gn Serrias. I usually use 7 1/2 Rem. primers though. The .204 didn`t like the WC 844 powder.

Funny how some guns like one powder and not another.