Yesterday I dug out my old Dixie Cub flintlock.40 caliber, due to parents going downhill fast 6 or 7 years ago and taking care of them best I could to keep them home,all my Muzzle loader longarms got put on mothballs,sadly the cub had a bad rusty spot in barrel I worked it over pretty good but still grabs patch a bit,once I got her as smooth as possible it was dusk I still touched of 4 rounds, had a better group at 25 yards then I expected My eyes have got a lot worse since I last shot her,I plain couldn't see front sight when on black bulls eye,I had to raise sights over target to get a halfway sight picture then try to lower onto bullseye,I ended up with right around 2" group just below 2" bullseye and that was much better then I expected,I am going to take a file to rear sight and open it up a bit hopefully that helps.