goex 3F will work A O.K. even with pan charging 2 grains max remember tap away from the touch hole liner for faster ignition
T/c also the improve vent loners compared to the old screw driver slotted one.The new vent liner are installed with a allen key and they are .070
I had a t/c pen hunter with the RB barrel twist seem to favor .495 balls compared to .490 is what I use now.Mt converted hawkens into a PA hunter stock loves 95 grains of 3F wad under the patched rb.
I use 54 cal. wads in a 50 cal. barrel
patch material pillow .018 out of walmart and my own lube 60/40 beeswax and lard ( no salt) and a table spoon of olive oil.