Mine is shooting real tight with both 90 and 95 grains Goex FFFg. I'm using a wonder wad under the patched ball.

Have not gone beyone 100 grains yet (don't know if I really have to).Have not shot it without the wonder wad. Have not shot it over the chronograph.

So much homework left to do - and I still need to do some more shooting with the Mustang. Will the madness never end!