I got a good deal on a 300 wby, and tried my usual 210 bergers that I use in my 300 win. Bergers did not work so well for me out of the weatherby. Figured I'd try the 208 AMAX and they shot far better. (still a berger fan) Shot a whitetail at 450 yds this year and it went straight down. Major internal damage. I don't think I would hesitate shooting deer out to 600 with them. I think the farther you shoot with them, they would probably be less expansion as the velocity slowed down. Just a thought, I might be way off on my thinking.