In case you're not familiar - it's for making your own muzzleloader caps.
That's my interest, but it's also for reloading 22lrs. Some years back I bought a Tap O Cap
but never used it because the only way to make it go bang was kid's caps or match heads. Now
there's a mix it yourself compound.
If there's no one here who's used it, I'll have to be the Guinea Pig.
BTW. 1000 caps now run around eighty bucks.