Great job, Swampman! I have a .54 GPR production percussion I bought over 30 years ago and a .54 GPR flint I built from a kit. Both wil shoot a one ragged hole group at 50 yards with a .530 ball, pillow ticking patch lubed with Ballistol oil and 80 grains of FFg Goex. 90 grains of FFg Goex will put me on the mark at 100 yards. That rifle is not only ready to shoot, it's yelling, "Shoot me!!!!!" Enjoy!