This past November I used my Christensen Arms Ridgeline in 28 Nosler on a 6x6 elk in Idaho. Has a Huskemaw 5x25x50 Blue Diamond scope, shooting factory 160 grain Accubonds. Worked great. Previous rifle was a Browning A-bolt in 300WM with a Vortex Viper 5x25x50 scope, shooting 200 grain Nosler Partitions. Any of the 7mm or 30 caliber magnums will get it done on elk.