I use a Kifaru Spike Camp for all my traveling. I don’t believe it is made anymore but it easily fits the size requirements and can haul fairly heavy loads if called upon to do so.
Hopefully it will be hauling a tahr in New Zealand in a couple months to add to its list of animals!
Great pack. 2,400 cubic inch. Same as the Express, Molle Express. Here's a Rokslide post on it. Includes discussion of the Antero and the 22mag, which I don't think fit the bill..
Spike Camp for travel on Rokslide
