Skagun said:
Also, it seems to me that the grease hole is a natural offshoot of the patchbox. Drop in the powder, grab a patch, give it a quick swipe against the grease, and seat your roundball.
But doesn't that put the grease in a rather inconvenient location? There you are, holding the muzzle of a rifle you've just charged, and now you're gonna either reach way down or lift it way up to lube your patch?
For ergonomics, one could have a self-closing container strapped to the forearm of their offhand. But I kinda doubt that was done. But perhaps such a container at the side or just plain have the grease glopped onto the brim of the hat like baseball pitchers do.
I'm just not buying the lube explanation. I'm thinking that the patchbox must have been for either maintenance activities (nipple pick, ball puller, etc.) or ignition activities (caps, match, flints, etc.).
Prelubed patches I could also see, as it would be rather hard to keep them clean and dispense them out of a belt pouch. That would almost justify the fancy engineering that goes into putting a patchbox there.
With prelubed patches in the stock, all you need with your rifle are balls (unless they're also stored in the stock) and a powder flask...no possibles bag. (Okay, maybe a knife--'cuz you *always* need a knife.) Of course, same is true if you spit-lube rather than pre-lube.
Then again, maybe the patchbox was just anticipating a need for a place to keep spare hearing aid batteries.
Dan in da U.P.