greetings from southeast Vermont (my nieces refer to this as the GFN - Great Frozen North - they don't see snow very much)!
you are on the path of truth and light ... you are shooting a flintlock, and soon you will walk with the true
cognoscenti, and be a veritable encyclopedia of gun trivia.
however, none of this comes without frustration and hard work (see, also, learning to play a musical instrument or a sport) ... I agree with, especially, the recommendation that you put a flint shaped bit of wood into your cock and practice dry firing. Do
NOT dry fire with nothing in the cock- this will break your lock in pretty short order.
Your flint must be nice and sharp if it to work properly. If you have the reknapping thing down, this is a very good thing.
Your flint should hit the frizzen about two thirds of the way up (that is, when the scrape is done, there should be the top third or so that has not come into contact with the frizzen. Check in a darkened room with the rifle unloaded (double check this - holes in the wall are not only embarrassing but surprisingly expensive) and make sure that you're getting plenty of sparks. If not, it may be a good a to look at having the frizzen re- hardened.
The touch hole size is a matter of much debate and discussion. I don't know if your rifle is equipped with a touch hole liner, but if it is, I would encourage you to get a few spare touch hole liners, so if you bore on out too much, you're not off the range until a replacement can be had.
There is much made of 4F vs 3F as pan primer, but I personally think that this is much more in the realm of the theoretical rather than the practical. Must flint shooters have a can of 4F which will last a really really really long time if you consider how much you use to prime.
Now the heart of the matter ... yes, back 'in the day' (when men were men, and giants walked the earth, and paratroopers wore brown boots) I qualified expert shooting the M-14, the M-16, and a few other now obsolete shoulder fired weapons systems (I really miss the M-14- I considered it a bad day if I couldn't pot an E-type at two hundred and fifty meters offhand). Then I got my first flintlock and was completely unable to hit the proverbial broad side of a barn.
A grizzled old fellow (I think he might have been easily forty) saw my struggles and said that these things were almost entirely dependent on follow through. If I didn't follow through my shot, nothing would ever go right. This fellow had a light beard (about a weeks worth) and was shooting a ruger security six, and was carrying a beeper, and had that certain grace only available to those who spend a good bit of time working out - not the body builder physique, the logger or backwoodsman thing ... anyway, it didn't take a rocket scientist to dope out who he was working for, and I figured that anyone who could get to that level was worth a listen, so I did what he said and,
viola!
my groups got smaller.
never saw the guy again, so I couldn't thank him (these people are about as secretive as Howard Hughes).
There is an almost meditative quality to shooting flintlocks (and to some extent caplocks) which is so different from centerfire. That is (to my mind anyway) the allure of the hobby.
Practice your follow throught.
Keep shooting- the frustration point is variable, but the effort is worth it.
and,
make good smoke!
p.s. you should check out his site:
http://www.blackpowderrifleaccuracy.com/
Dutch Schoultz' method is the best twenty odd bucks you can spend.