Yes. I was referring to Delta bison hunts.

Did some sleuthing.

Weapons Legal for Bison Hunting

Bison may be shot with any centerfire rifle, handgun, muzzleloading rifle, bow-and-arrow or crossbow that meet the criteria listed below:

Rifle/handgun: must fire a minimum of a 175 grain bullet having a minimum of 2,800 ft/lb energy at the muzzle.


More info here re: BP, muzzle loaders, bow
http://www.adfg.alaska.gov/index.cfm?adfg=deltabison.weaponslegalhunting

Seems I remember a 2000 ft-lb requirement @100 yds. If so, not the case anymore.

Also, appears to not be a caliber requirement except to meet the above.

If you take the time it takes, it takes less time.
--Pat Parelli

American by birth; Alaskan by choice.
--ironbender