Dropped off gear at AK Air Cargo this morning and talked with the agent about the one set of antlers per plane deal. She works cargo and ticket counter in ANC and it seemed like she has been there for a good amount of time. She hadn't heard anything about the one antler per plane policy. In fact she said she's already booked several flights with multiple antlers as checked oversized baggage out of state. She pulled up a copy of their current handbook and searched all the main keywords ("antlers" "moose" etc.). She stated that one set of antlers per passenger is a new policy in their handbook. But she couldn't find anything about one set per plane. She also said that it's likely the one set of antlers per plane could be a policy for their Horizon Airlines partner flights. Which makes sense. Also, she said that oversized baggage is the first to go standby if the plane is full - which would include antlers. Typically I throw everything on a pallet including all my gear, meat, and antlers; then it gets shrink wrapped and shipped home. She didn't have any doubts that would be a problem.
On the other hand, I talked to a friend who is an outfitter about it the other day and he said that the airport they fly out of specifically told him that it's one set per plane. Based on that and the various responses I've seen people post from their personal inquiries, it seems like there is widespread misunderstanding among AK Airlines employees as a whole. Take it all FWIW and play your odds I guess.
Sidenote: it was 40 degrees and partly cloudy this morning. I saw two separate bulls on the move (about 40 inchers). And almost hit a black bear. Things are moving.