I have a Benneli R1 in 30'06 that my wife gave me, that I love to tote into the deer woods, but it usually has one flier out of a 3 shot group. I have some Barnes TSX 168gr match grade bullets that I want to load to try and tighten them up with. Any suggestions with this being an autoloader with the full length barrel as to what primer and powder would be my best starting point. Recipies are appreciated.