I tried 3fg powder today. Results from 80 and 90gr charges. Ignition was dang near instant! I filed down the front sight about .005" today and hope that will put it at least dead on at 50 yards. I still need to try 60 and 70gr charges, but will need to run more balls in the shop.
https://www.youtube.com/watch?v=jWr2hTwQsA8
