Taylor, I made those about ten years ago. I was making English style long bows and would use the horn tips for bow string nocks, and arrow nocks. There is a lot of horn left over.....so, seemed like a natural progression. I had a pretty nice horn left over from this process and on a whim, made a powder horn, skrimmed it up a bit, took it to someone I thought would know about such things and was invited to a shoot. At the time I didn't own a muzzleloader. I sold the horn for $400.00 at that shoot, went home and started making powder horns. I have made some pretty fancy horns for people all over the country. I don't much anymore and then mostly during good weather. Seems I grew sensitive to the dust, makes me very sick.
Thank you,
Robby