I agree: Kinda an opened-ended question as "what caliber to
use:"
Lotsa stuff to cover here, & maybe should break it down into three different areas:
1) how to have a decent camp (but stay dry & warm while hunting, etc.)
2) how to actually hunt
&
3) what to do with it once it's down
for 1) I use capilene under-wear, down over & a fleece/camo Gore-Tex overcoat while hunting/hanging out. Works very well with the low humidity CO has to offer during "winter-stuff," even with wet snow we can get. Camp-stuff may-well include some "basic" GT nylon over-coats to maintain my fleece-stuff. We camp re a more "back-packing" mode & don't really have the "drying out-thing" that some "more sophisticated camps" have. (No Winnebagos, no "hunters tents,") we're in a backpacking mode, with bare essentials - but we do eat well.
But, it works quite well, & if you can do it on the edge, you can do it anywhere.
2) I hunt dark timber almost exclusively - & essentially "bow-hunt" with a rifle. Elk/deer live there & only go to food to eat - otherwise, they live in areas they feel safe in - especially when pressured. Go there. Areas that are usually given a "pass" by most hunters (except to walk through noisely) are prime bedding aaras & that's where elk spend a majority of their time - the darker, the better.
Lurking aroung "prime feeding areas" will get you an elk or two, but they don't live there. Elk live mostly where they feel safe, & that isn't in the open - unless they're migrating & that's another totally different deal.
Me & The Bud are at an about 85% success rate.
3) I carry a couple 1/2" wide X 20' straps & another 100' 550 'chute cord. No telling where you'll down an elk & being able to stop the darned thing from "falling dow-hill" is always a good thing. I've had elk "fall downhill while processing" easily a hundred feet, depending on the hill-slope - usually less, but ..... best to be prepared.
I'll do a "quick-skin," quarter & hang the hunks, bone the back-straps/tenders in a bag & go for camp (that's about 30 lbs BTW extra in the pack), get to camp, have an adult libation & tell "the friends."
Hanging the remainder in the shade will allow the remainder to be "aging (if nothing worse), for another day or two - & certainly nothing worse than would be had at camp.
The course of the next coupla days gets the rest of the meat to camp & stored in the shade = a perfect place for hanging meat. I don't beat myself up, but do ty to get it back to camp in a timely manner.
I have yet to have a single ounce of meat go to waste.
Others have a better time packig in deeper & having an area to themselves, we don't have that luxury, as we hunt publically available public land.
We hunt where there's some fairly extreme pressure - all-in-all, but do quite well all-told.