Originally Posted by
n.h.schmidt
Texan I will try to get a couple of pictures sometime today. I went to a double layer pop can cup beacuse the single layer self destructs too easily. I beleive the cup helps hold the charge and force it into the nipple. If the cup is too weak you loose at least some of the effect. Last summer I went too far in making very strong cups. I used derimed 22rf cases ,sized down and shortened. These were hell for stout.In fact you could resuse them several times. All good except for one very big problem. The cup acted like a piston and would fly off the nipple and put the hammer to half cock. Even with a nipple with a very tiny hole,no difference. This was a dead end because of that alone. They were also hard to make . The double layer pop can is stout eneough to hold the charge for a while and will not blow the hammer back.Also easy and fast to make.
oftig
What you have showed us is neat. It looks like it could work well. Possibly very tedious but cheap to make. The four slits would be a problem for me.
n.h.schmidt