Shot last year's cow at 320yds with 180gr ABs that only started out at 2,690 fps (18.5" .30-06).
Found the one that hit the shoulder under the skin on the far side, weighing 109gr and looking like this:
https://imgur.com/a/0MN0rcAThe one that didn't hit the shoulder, but went though a bit more elk exited. Lots of damage and elk soup between them, I plan on using them again this year.