18th century bags and packs are something I have studied quite a bit. I've looked at everything I could find. (19th century, I know squat...
)
Some people did use belt-mounted shot bags...but these are not huge, only carrying balls, flints, and gun stuff. Most people don't really want to carry a large, heavy bag on their belt. I don't see belt bags being really used for anything else (again, people had pockets). Even as shot bags, they're relatively uncommon.
For most other "stuff", people carried snapsacks or knapsacks. I could probably show about a bazillion 18th century images of people carrying snapsacks. Ok, maybe not that many, but a bunch. It's a tubular shaped drawstring bag with a single shoulder strap, carried diagonally across the back, or sideways, across both shoulders, as people carry a blanket hoppus. In the first half of the 18th century, the British army issued hair-on goatskin snapsacks, replaced later with two-strap knapsacks. (I expect that the terms were somewhat interchangeable at the time, as so many other terms were, and snapsacks were probably often called "knapsacks", and possibly vice versa.) As I've said before, the single strap snapsack unfortunately don't work for me, so I need a two strap knapsack, which I intend to start working on soon. We know of a few Revolutionary War American knapsacks. Mostly of the single-pocket flat-envelope variety. Two I know of are hair-on hide. Other period images I have of two-strap knapsacks (and I don't have very many), show huge, bulbous packs, definitely not the flat single pocket envelope...however, these images are all frustratingly completely lacking in discernable detail. I can offer no insight as to how they might have been made.
Occasionally you will see people with large bundles. Stuff wrapped up in what I assume is a sheet of fabric or a blanket, rolled up into a cylindrical form, with leather straps around it to hold it together, and leather straps run through those straps to go around the shoulders.
I have also seen one 18th century illustration showing a man with a portmanteau carried diagonally across his back with a single shoulder strap.
Unfortunately, I don't think I have that picture saved. Dangit.
People would often carry a "wallet" (a word which can be used to describe almost anything). Today very trendily called a "market wallet" (which kinda makes me cringe). A simple two-ended bag with a slit opening in the middle. These were dirt-common, but honestly, I don't see them as being too practical for running around in the woods.
Some Indians would use a "slit pouch"...which is essentially a small leather wallet, hanging over a waist belt, and I have seen one image with one lopped over top of his powder horn. As I recall, I may have seen an image somewhere of a White man with a similar thing on his belt, but I'm not sure about that.
Now...everybody's favorite... the "haversack" type shoulder bag.... Despite the cries that ONLY the military ever used such a thing, I do have 18th century images of genuine non-military people with haversack-type shoulder bags. Not many (I can think offhand of only two), but they do exist. Personally, I HATE swinging shoulder bags with an unbridled PASSION, and I really don't see the attraction.... So you probably won't see me with one except when I'm shopping at a trade fair.
Now, with all this discussion, I don't think we have even established what jrbaker90 actually wants! He may not be looking for anything historical at all!