John Taylor built and posted a pic of a nice looking 12 ga underhammer that brought up a few questions that brought on a few more.
First off I've seen them posted a few times on various forums but had always noticed them being smaller calibers (<.50) and percussion.
In his thread I had redirected (sorry) he mentioned that they actually make them in flintlock (and were originally), and actually fire faster.
I'm curious how the powder stays in the pan. Ultimately I'd assume the frizzen is hard to move making it a very deliberate action to move it. However it seems that would also make it near impossible for the flint to strike the frizzen and throw the sparks into the pan.
I'm also curious what makes an underhammer ignite faster.