Actually you are retempering/hardening the frizzen. Most have just a hardened surface and when the flint wears through the surface the quantity of spark falls off.
On some modern flint guns the frizzen was never properly tempered and they can be salvaged if the steel in them is good enough...
Sometimes poor sparking can result from dull flints, flints at the wrong angle or even soft flints. I have a knapping rod in my shooting bag.
I just had a modern Pedrosolli sxs flint shotgun that the locks were so bad that they could barely make a spark, slow hammer falls, it was just a bad shotgun. For the cost they could have used decent lock and better better barrels and made a really nice reproduction of a sxs flint shotgun. All the parts were there they just sucked.
Last edited by oskar; 08/08/25 12:52 PM.