My pack has a removable shelf that separates the to and bottom of the pack with a heavy access zipper across the middle. If I’m carrying meat and gear, I’ll pack my sleeping bag, cape and anything else compressible into the very bottom(in a sil-nylon bag) and put a bag of meat on top of that. Then more meat in the top half on top of the shelf and pack as much gear and clothing behind it to keep meat close to my back. Then extend the top of the pack and stuff gear in. With one ram between two guys it’s no problem to have everything in the pack except for the head. One animal each and some things get strapped to the outside like tripod, etc.
If the loads are so big that I have to strap a bunch of stuff on the outside, then it’s too heavy for me and I make more trips lol. Strapping a big caribou head to the pack is a little trickier than with an external frame but doable, and for me the comfort of the harness system more than makes up for it.