I just got 100 pieces of .300 AAC Blackout brass and dies to start using my 16" Encore barrel. I doubt I'll ever shoot an elk with it but maybe a deer. I didn't think I'd ever shoot deer with a .223 or 6X47 Rem, but my Daughter changed the way I think about what cartridges work and what doesn't.

Using a .300 AAC in situations that you'd be comfortable using a Bow, ML, or Handgun on should allow for a successful hunt. I don't see how putting a .308 caliber bullet in the proper place wouldn't bring down an elk. However, I wouldn't expect it to dump one where it stands.