Trust me when it comes to shooting a flintlock. Redneck said is true about a distraction. Especially for me being a southpaw. In humid or damp weather they can get cantankerous too. One shot may be almost instantaneous and the next you will have a delay. Shooting a flinter in damp weather will cause condensation to build up in the pan/flint/frizzen area (basically the lock).
In PA we have a late season that is flintlock only .44 cal or larger. My friend and I have a blast because we are usually the only ones in the woods where we hunt. I can honestly say that I had never missed a deer in my hunting career until I started using a flinter! Most of the misses were due to excitement of getting a quick shot and forgetting to "follow through" on the shot. I had a tendency to drop the barrel once the pan went off. Its amazing how fast the body can react. And this reaction coupled with the slight delay of the main charge caused complete misses. Now don't get me wrong - Flinter are super fun. I don't think I'd ever be without one.