HIGHLY RECOMMEND:
Starline new cases; W296; Magnum primers (I prefer both the CCI350 and Federal 155's); 300g XTP-HP, Swift 325g A-Frame, 300-335g cast bullets from Beartooth, Cast Performance, Dry Creek; serious time with components, patience, thorough understanding, and chronograph.
Of course, I also think a 255g Keith from Dry Creek @ 1000fps is fine for deer