Jose,
Those old muskets we see will usually take a match -head in the touchhole. Maybe they reamed them out a bit to make them work!
I think with a big 'Bess lock and large touchhole, there wasn't much ignition problem, but for us and now a smaller grain size is often best. I must say though that in my Chambers locked guns, 2F is all I need to carry for prime and charge.
Very best,
R.