The only way that I know that they are not sealed tight is that when I blow into the end, they seep a tiny bit of air through, which I assume means that they could possibly leak a bit of powder. I can only imagine that people had this problem back in 1750, so I wondered what they might use to seal the horns. I intend on scrimshawing and finishing the horns over the next few months, and don't mind putting some time into making sure they are correct.
I suppose I could have bought a completely raw horn, whittled an end plug and such for it, but these were available at a rondy for 20 bucks a pop, so I couldn't justify spending the time to start from scratch.
I know that I have read something about using a brass spout on the horns, but I can't recall if having one is P/C for the F&I period. My personna is one of reasonable wealth, so the cost wouldnt be an issue, but were they in normal (not just one "trendsetter" in a corner of the northern woods) use at the time?
In great appreciation,
Damascus