I've got an old Bianchi Pack that has 1500 ci. I don't know if they are still made, but it was my hunting pack until I decided I needed more capacity for extra clothing, etc., and went to a Kifaru Spike Camp.
Other than that, I'd head to a back packing shop, like REI, and see what fits in that size. I just gave away a small Badlands Pack. I've found that few companies that make packs, or clothing, for hunters can compete with those that make such things for mountaineers.
Trying to get by with a small hunting pack is tricky to do. I have been caught a out w/o proper clothing a few times. Hypothermia can kill uopu a few hours if you can't deal with it. E
