Evan, I haven't had the opportunity to shoot an elk with the 6.5 yet. Someday I will. My gunsmith has personally taken elk to 2200 yds with a .338-375 R&R and one at 1450 with a 6.5 Gibbs. Now, I'm within 150fps of what he was shooting the gibbs at so I have no fear in shooting an elk to my effective range with the gun. I know a 140g bullet through the lungs will do the job.
That being said, there is a noticable difference in impact energy when shooting Olspark's 300Tomahawk.
