I used it on three antelope and a couple deer in a 9 twist 223 and it performed very well. No bones hit and pass through on all including a lope at 410 yards. Sierra confirmed the bullet is constructed for game "up to large Whitetails" when I asked them. It does have a little heavier jacket.
It is superbly accurate in the 9 twist Stealth 223 and my 223 AI (1/8)with a case full of VV540. I also use it for a coyote bullet with good results. I like it.
