When I don't need the space of my Stone Glacier 5900 I've been using the Mystery Ranch sawtooth 45 for just what you've described and after 4 deer and 1/2 a bull elk I can say I'm pretty happy with it.
That's my entire PA whitetail boned out on my MR Sawtooth this year. That load shelf is the bomb. The meat is in a game bag and only went in the plastic garbage bag to save the bloody mess on my back and pack. It came out as soon as I got to the truck. Total pack weight was about 85 pounds with the head, meat and all the gear I took in minus the rifle.