Yeah my Pedersoli Jaeger will eat a couple pans of 4f.
I now load and prime all my rifles with 3f.. now I can just hunt and my guns goes bang. (almost every time,,lol)
4f makes way better revolver powder anyway, so I now buy it by the case for the revolvers, but 4f doesn't go in my flintlock pans anymore.
It sure would be bad news if 4f made its way under the lock/barrel!