Yeah I expected that, crunched the numbers a little:

.338 250gr bullet @1100 fps with a 75 yard zero keeps you within about 3" high or low from 50 to 100 yards with about 600 ft/lbs of energy.

Jumping to a .338 300gr bullet bumps the energy to about 750 ft/lbs.

A .458 400gr bullet keeps about the same trajectory and 900 ft/lbs.

By comparison a .45 ACP with a 230gr bullet has 350-450 ft/lbs at the muzzle. Seems like if you held a Colt to a deer it would do the job.

Anyone have more experience with this?