I have also read of farmers, hunters, rangers and militiamen wrapping food in corn shucks, or old cloth and stuffing those bundles in the fold of their hunting shirt, coat, or wescote, as a wallet. The belt holding the hunting shirt, or coat close to the body prevented the bundle from falling through, onto the ground.
There are many references to the term possibles bag. I have neither the time or inclination to do your research for you.
I repeat, I have read A LOT of journals and letters from the 18th through early 19thth century and I do not remember seeing a reference to a possibles bag. I don't expect anyone to do any research for me, but it would be nice for everyone to do a little research for yourselves.
Now to answer the original question; If your only use is for hunting season and not rendezvous or reenacting, that bag might be ok to carry the few items you will need for a mornings or evenings hunt.
However, if you plan to attend pre 1840 rendezvous or colonial reenactments, they would not be appropriate.
Check out the link for some nice hunting pouches.[url]
http://www.kenscottpouches.com/[/url]
These hunting pouches should be proper to most time frames, especially the "D" style bags. I might add that Ken Scott's bags are probably top of the line and you can make something very similar for far less.
What to carry? Some options are; a small tin of grease, or a small bottle of oil. A small bottle of patch lube, or bore cleaner for swabbing between shots, a bag of flints, or a tin of caps/capper, bag of balls, roll of patching/precut prelubed patches, turnscrew/screwdriver, cleaning patches, or anything else you might need to load or maintain your gun when away from camp, for however long. I also like to carry a 3-4 inch blade claspknife, when "possible". :winking: Never know when a small knife might come in handy.
J.D.