Still really not convinced or a fan of the "Flex Tip" ammo. Have shot a number of deer with a 450 bushmaster with their flex tip ammo with it just punching through (having to track farther than I care to), changed to Hornady's soft point and got great (drop dead) results. As far as the carbine "critical defense" it shoots great in most of my carbines but will hang up in more than a few.