I carry a cap-n-ball revolver most of the time when hunting, trekking, woods-bumming, exploring. Once in a while I take the Luger, .22 Airlite or Webley out, but mostly it's the charcoal burners.
What you see above works best for me in the field. I carry lubed bullets in the civil-war cap-pouch. It will hold quite a few, especially in .36". Then a small flask (which packs a lot of powder) with the appropriate spout. 24 grains for my 1860 or NMA in Navy caliber, and 15 grains for the 1862. I use 4fg, and that way if I'm packing a flintlock I can also use the pistol flask to prime, and leave my priming horn home.
And then, a straight line capper around my neck. This makes a quick reload without fumbling around with wads or smearing grease over balls. Also enables me to carry a lot of spare ammo, if that's important. My cap-pouch will carry well over 50 .36 caliber bullets, and the flask is probably good for a couple hundred rounds. ? Never have measured how much it holds.
Then I carry a small tin (holds about 18) of paper/combustable cartridges for emergencies in case I need a super-speedy reload. But the flask, lubed bullets in a cap pouch and a capper makes for a fast trouble free field reload. And saves me the trouble of making more combustible cartridges.
I don't think it's "better" than combustible cartridges, but it eliminates the trouble of making them (which can be fun, just like reloading) and my bullets can be well lubed, which I like. I sure saves a lot of fumbling with round balls, as with a bullet there's no need for wads or grease. Just throw that powder charge and ram the bullet down. Cap and she's good to go. And, don't have to dig out your tin of cartridges and open it up, and be careful not to drop the thing and have cartridges all over the ground, or in the snow, just pop the flap on the cap pouch and grab a bullet. You might drop one, but you won't spill the whole mess.
Anyone getting tired of that same picture?
