https://www.simmsfishing.com/collections/waterproof-bags/products/dry-creek-duffel-l-200l
I have an older version in XL which is actually smaller (164 liters) than the L version in the link above.
Simms Dry Creek Duffel - XL - Greystone
I chose a different route, I like to stand up when in my vehicle's shelter and not carry the weight of a shell.
https://rokslide.com/forums/threads/preferred-hunting-rig.245918/#post-2393339
BTW...my previous advice was sarcasm and my wife is not ignorant of the fact I have so much hunting and camping gear it fills my office, half the garage and a good portion of a 12X40 foot storage unit. Doesn't include the hunting vehicles. :)
Well for you guys considering a muskox hunt, here's what my Canadian guide is recommending:
What To Bring on your Musk-ox Hunt
*Temperatures will usually be around -20C (0 F.) but can dip to -40C
(-40 F) or colder so be prepared and fully covered for Arctic conditions.
For outer wear...
I was doing ADC work on a cattle ranch and called in 5 yotes using a calf in distress call. Was using a 22-250 bolt and got one. Didn't know the ranch owner was atop a hill behind me watching...told me to "gun up" at dinner. Now I carry an AR.
Have you ever looked at the cost all the stuff you bought for hunting (like shelters, bows, guns, packs, boots, optics, electronics, clothing & boots, your pack(s) and everything in it, vehicle(s), travel, licenses, applications and tags, taxidermy, your entire investment in the pursuit of wild...
Shoot wood shafts and stop caring. Practice more using different (unknown) distances and in different positions. Learn to trust your gut. Forget all else. JMO.