I have been shooting only flintlock rifles .50 and .36 since a teenager in the late '50s hunting in S. Texas. I presently still have a couple of '.50s since that time with no name or markings hand-me-downs as they are age worn off many decades ago. I have a .50 purchased new from Ted Hatfield personally in the late '60s that I still shoot semi-regularly. I have 4 .36 flintlocks (by far my favorites)...3 from the 50s, with markings worn off and one, 3 year old Pedersoli Frontier which I really enjoy shooting. All my flintlocks are open sight off-hand 6" paper plate shooters with my eye sight; .50s easy up to 45-50 yards and the .36 cals all off hand are easy 6" plate 30-35 yard rifles. I don't shoot bench with any of these rifles. I have not hunted anything in 40+ years except for year round feral hogs. I woods shoot with old friends competing w/a bag full of cans and plastic bottles; or sit and wait by hog sign water. All my .50s all use the same charge, .490 ball/patch and 65grs 3F., all the .36cal use the same charge .350 ball/patch and .25 grains 3F. I like to keep shooting simple. I never enjoyed shooting cap and ball....in my opinion only, not even close to a real sport compared to flintlocks. I don't dress like back in the day. I am also an old retired pilot....I use Corrosion Technology "Bore Cleaner" to clean barrels and use as patch solvent. There are a lot of folks that I shoot with that shoot better than me, and an equal amount of times, the reverse is fact. Just plain FUN, even though I have slowed down a lot lately and now a fair weather shooter.
EDIT: Forgot to mention...no bore cleaning between shots....only clean with plain water and followup "Bore Cleaner" at the end of the day. No bore rust or corrosion in any of my rifles.