I finally got back out to shoot my .58 cal flintlock barrel that Bob Hoyt made for me earlier this year. The first outing a couple months ago I was having ignition problems due to a cheaper vent liner. But I had gotten enough shots off to sight it in. Today after installing a RMC liner I fired three shots each using 80, 90, and 100 gr of Goex FFg, a .570 ball, and a .020" Oxyoke patch. All shots were at 50 yards. This barrel has very deep rifling and shows a lot of promise to be a great shooter. The .570 ball and .020 patch seems to be a nice fit. After using the short starter it was still snug using the range rod for another 8-10 inches then went down with a nice firm pressure.

looking great i'd be ready to hunt with that group

That don't hardly smell at all Bronko. Your mission, should you choose to accept it, is to put one of those big balls through a deer. Your second mission, which you have no choice but to accept, is to try those same loads with FFFg.

What patch lube were you using?

Well ya old goat I just may take on that mission. Going to have to be on a Sunday afternoon because there's church in the morning and archery season starts here on Saturday and I'll be spending a lot of time in the woods and out of my wife's hair.
But it I do that I will have to also take the .58 caplock as both of them shoot the 100 gr FFg load well.

Hey Semi I tried FFFg using different charges and it didn't shoot near as well as the FFg. Sort of but slightly better then the first target posted above was the best I could do.