I'm hunting this season with a Ko-Tonics upper on a DPMS lower with Armalite trigger chambered in 6.8SPC shooting SSA loaded Sierra 110gr Prohunters. It's a very excellent all around rifle however for hunting I plan on getting a .458 SOCOM upper and perhaps the 6.5 Grendel. I know people use .223s where legal but that's too light for my taste.