My Buddy uses 70 gr nozler bt all the time in his 243, and has killed a lot of deer in their tracks.
I have some 90 nozler bt loaded up at the moment for my 243... and I thought I was going to get a chance to test them today, as I had 3 bucks try to run me over in some swamp bottoms, while I was sitting in my coyote chair waiting for hogs or bucks to come by. I could have shot those bucks...IF.... they would have stopped trying to run me over... some dogs had been chasing them down into the swamp.... I just happened to be in their way... they saw me and continued being spooked and ran right on past me... dang... I could have used a shotgun at that 30 yd distance.
I'll try again this week.