RE: Traditions PA Pellet flintlock??
Sounds similar to TC Firestorm. Flint designed for 150gr pellets with a compromise twist rate for ball or sabot.
I haven't tried my Firestorm in anger yet. Put maybe 10 patched balls thru it just to check it worked. Cleanup was a breeze. Mine is SS/synth. Seems well made. Only thing I plan to fix is the trigger which is gritty mush.
Am of to the range tomorrow to work up a load for it. Will let you know how it does.