That is a nice group. Good looking setup also.My two 221FB's (Cooper M38 & CZ 527) only get fed a diet of Nosler 40gr BT's and Varmageddon's. My primary targets are rock chucks and ground squirrels, and these two bullets perform perfectly in regard to terminal effects, and the accuracy is probably better than I can shoot.
Living in the shadow of the Nosler plant, and with the proven performance over the years shooting these bullets, I'm not inclined to change anything. "If it ain't broke......."