I have the ILBE and used it for hiking 30lbs in it.
It's heavy for someone "not fit" like these new Soldiers and Marines who runs and trains every week.
I'm an occasional hiker and with 30lbs only, it gave my hips a bit of a problem...I echo what folks say about the hip belt and its padding.
If use my Mystery Ranch Rush with same 30lbs, no hip problem at all.
Is it bomb proof? Sure feels like it. I'd keep mine for vehicle camping for sure. Or hammock camping because everything inside the pack is light.
Hauling meat on it? I guess if you're fit to carry. 6lbs empty is 6lbs....ounces to pounds...pounds to pain.
I've yet to go on a hunt, but, I can only imagine what frustration and adult profanity one may come out from someone who's been glassing some deer or elk for 3-5 days, then to finally take down a heavy meat. Then make 2-3 trips to haul that meat back to your truck, hoping, praying those stitches are not ripping apart because it wasn't up to spec. Or curse and moan, because that meat won't fit right on your pack and you've already exhausted 3-6 days of your 7-day vacation.
Why gamble?
Leave the military surplus for military purposes.
Unless you're smuggling a hot little-people stripper
Kudos to these members btw with resourceful attitude with modding the ILBE. I did read about using Kirafu belts working miracles in improving the load on this pack. The belts a hefty price, good luck finding a used one.