I would think that the 300gr. XTP would be a fine
choice for elk. I shoot them in my Omega with the
Harvester crushrib sabots. I did some testing with
wet phonebooks but lost pictures when old camera
went south. But I can tell you that at 30yds. I had
about 10 inches of penetration when using 100gr. of
APP in stick form. Also the 300gr. XTP looked awesome
when dug out out the wet phonebooks. It mushroomed
perfectly. So I'd say it would definately take an elk.
But as sabotloader said shot placement is a great part
of the hunting equation. Good Luck & God Bless
Danny