I managed to complete a functional horn last August. I was inspired by a gorgeous green banded horn I saw at Dixon's last summer. Mine has all the grace and beauty of a fat zucchini. I suppose it could be carried on either side. The stem of the zucchini is a piece of anter that is really pourous on one side so it holds stains really well. The other side isn't as porous so it stays nice and white. It is a screw on tip so it is relatively easy to load with powder. The threads are really loose so it probably would leak and probably would break if you were to drop it or bang it against something.
I was not able to make bands for it. All of my attempts failed.
So, I console myself in that I'm a greenhorn at muzzle loading, and my horn is an outward sign of this. Sometimes I think about trying to slim it down a bit. I am a fairly accompished craftsman, and can do most things out of shear determination, but this banded horn thing has me beat. I read Tim Crosby's tutorials on this and when he sais he has 80 or so bands ready and NONE of them are right, I have to ask myself, Why did they (the old horners ) go through the trouble? I mean, the bands aren't really functional, they're just decoration, right?