I LOVE my flintlock .54, BUT the previous comments are correct, I had to work with it for a good two years, range time, hunting, all weather conditions, to learn all the ins and outs. I've taken several deer three years running, but if you don't have the range time avaible, go with the sidelock. If you don't have the range time but can find a person who has run into all the glitches, you probably could learn to use one reliably in about 6 months. OR, again go sidelock, and when you've worked that enough that you want something a bit more complicated, then go flint.
LD