Has anyone used this pack with a heavy load, 100 lbs or more? I am looking at this pack for a 3 or 4 day Idaho mule deer hunt and maybe for archery elk as well. It would need to be able to haul my gear and a boned out buck for 5+ miles. Also how long of a rifle will it hold? If it would hold a rifle with a 24" barrel and 6" of suppressor that would be a plus. Thanks guys.