11 caliber...what is that, #4?
#6. I said it in the video
Did you mean to say pattern? lol. With ~1/2" of smooth bore and crappy dropped shot projectiles, I ain't expecting a tack driver. Although I suppose it could literally be a tack driver if you places the muzzle directly on the tack!
There is no practical use for this thing, just thought it would be a fun quick build. The nice thing about it is, if you turn it around in your hand, it makes a great fist pack, which would come in handy if you actually shot someone with it, because that would probably make them angry.
Have you thought of any fixes for your firs few misfires in the video?
Well, like I said, it's a spring power issue. These are hardware store springs, not gun springs, and they do tend to take a set after a few compressions in excess of 50% IME. Which is why the first two cylinders earlier that day went fine. Add to that the fact that CCI promers are by far the hardest cups other than NATO stuff, and you get what you saw in the clip.
Also, I had left a little bit of end play in the cylinder for smooth operation, but I think when ramming the balls down, it pushes the primers back a few thou, so that first strike or two is also having to drive the primer back forward into it's seat, which means driving the balls forward as well. The tests before the video were done with just primers, which is probably why they went fine. See, even though this is muzzle loading, the cylinders are bored through at .1094" (7/64), because the primers are .174" diameter, so no need for a reduction to stop them.
I'm about to place an order with Wolff for a bunch of hammer springs, so I'll get a couple different ones to try in this as well.