I was still not satisfied with my Lyman .54 flinter so I took it out again today to play with some loads. I'm not dis-satisfied anymore.
I knew it was sighted in at 50 yds so that is where I set up the target. All shots were fired at 50 yds using a .530" home cast ball and .020" Oxyoke prelubed patch. Spit patch and dry patch swab between each shot.
Target #1 is about what I was getting all along with the previous 100 gr charge of FFFg so it didn't surprise me any that I got just over 1 1/2" group (discounting the pulled shot that I know I caused).
So on target #2 I dropped the charge down to 90 gr of FFFg. Let's just say I don't think I can get much better at 50 yds with open sights. If it wasn't so darn hot today I may have tried it at 100 yds but.....too lazy.
I had all day to shoot so I was really concentrating on my sight picture making sure each shot was perfect. Also, I opened up the touch hole to 5/64" and it seemed to make a big difference in the ignition. I think this is because it brought the touch hole in line with the top of the pan which is where it's supposed to be.