Mark LaRue took a bull elk at 405 yards with a 6.5 Grendel shooting a 120 grain Barnes TSX.

https://www.ar15.com/forums/Industr...reat-American-Safari-/219-164444/?page=1

Originally Posted by Mark LaRue
So, this is not the end-all-be-all of tests, but those 120 grain Triple Shox did shoot clean through an elk side-to-side, standing 405 yards across the way. Don't know how much damage it did, but it sure did kill hell out of him. He was guartering slightly away, and I missed my wind guess by ~5", so I hit him just behind the diaghram, it then passed through the diaghram halfway through him, zipped through his left lung and exited behind his left foreleg. YMMV.A nice side benefit of hunting, all meat is hormone-free and organic, just the way my honey likes it.
M. LaRue