Look, all I ask is for people to try the experiment as I out lined it above, and again a year ago. Those who steadfastly stick to using leather are welcome to their position. But, I notice they are silent about trying the experiment. The silence speaks volumes for those who are paying attention. I am not going to change the ways of shooters who are set in their ways. If they think adding about 30 grains of weight to a wrap is going to make the cock on their lock BEND, then don't do it. My cocks are cast from stronger stuff than that, and have been properly heat treated.
What I hope to do is give new shooters a chance to get the best performance out of their expensive flints, get sure ignition, so they can concentrate on their shooting skills, and not on whether the gun is going to actually fire THIS TIME, a frustration no one needs, and eliminate knapping as ONE OF THOSE THINGS YOU HAVE TO DO to keep a flintlock firing.
I have used every kind of leather from soft " Chrome tanned" leather, to brain tanned leather, to raw hide, to wrap flints. I have soaked leathers in water and then pressed them in a vise to make them compressed and hard as a brick. All of them have shown " give", or rebound, which leaves chatter marks on my frizzen, and loads the edge with steel chips. Those chips cause a misfire, sooner or later.
If the cock is angled properly, so the flint edge scrapes the frizzen at 60 degrees, the flint itself will break along its 120 dgree refractory line( 120 plus 60 = 180 degrees), so that it knapps itself with each strike while slicing off bits of steel to throw into the pan. Because the the hammerfall is not impeded by poor angled contact, causing rebound, all the energy of the mainspring is used to cut the steel, creating a hotter spark that lasts longer, and more sparks to make sure that some of them ignite the powder in the pan. Because of proper angles, and no wasted motion, you can and should reduce the tension on the mainspring and the frizzen spring to reduce the disturbance to your sight picture when the hammer comes to rest. Do these things with your lock, and your shooting improves, either off the bench, or off your hind legs. Oh, you can still miss a target, if you don't have good basic skills, but it won't be the gun or the lock's fault if you do.
I often wonder if the old guys who refuse to try my test are just concerned about competition from the new guys. It would not be the first time some shooter steered a new guy the wrong direction just so he could remain the king on his molehill. Personally, I like to shoot against people who are shooting their best. It makes me concentrate and bear down to compete with them to win. If I do win, the win is well earned. If I am just shooting better than the other guys, because they are shooting poorly for any reason, its just another win that means nothing.
When I first began shooting a flintlock, in the early 1980s, it was a rare thing for the gun to go off. Today, its a rare event for the gun not to fire. I never worry about a flint. The last time the gun did not go off, I looked down at the flint, and a huge chunk of the edge was missing, and an occlusion, or what was left of it, was visible where the flint shattered. It was very humid out, and my prime was already clumping together. I replaced the flint, reprimed, and the gun went off just fine the rest of the day. It was my fault that the gun did not fire. I didn't bother to check my flint before priming the gun for the shot, and I didn't clean the pan well. I won't do that again.