Western mountaineering makes some nice semi rectangular extra wide bags .. much more room to move around in through the waist and shoulders and a bigger foot box. I bought the sequoia last year because I can’t get comfortable in the regular mummy style bags— you can actually side sleep in them...
Glock 20 with 220gr ... I like the idea of the chestrigs but I usually have my bino harness on so have it on bag strap— that being said I wouldn’t go anywhere without my bear spray