The Firing Line Forums - View Single Post - Ultracompact derringer with superimposed loads

Derringeer · December 26, 2019, 08:26 AM

Hello! I’ve been sketching on a small over/under derringer with the capacity of four shots. I’ve seen the superimposed concept on the forgotten weapons channel, and I thought it’s pretty neat. But I’m curious of what could go wrong.

Here’s a picture of a barrel and the loads https://imgur.com/FgzHsmQ
The second charge has a ”case” to support the bullet, to prevent compression of the second powder charge. I don’t know if that’s necessary? The old superposed weapons didn’t had it.

I will also be using a light (about 100 grains) load of buckshots for the front charge which should keep the pressure down. And for the second load I will use a slightly overdimensioned pure lead roundball instead of a patched one. For extra sealing I’ll use some Blu Tack behind and thick paper infront, but maybe something else will work better?

December 26, 2019, 08:26 AM	#1
Derringeer Member Join Date: December 21, 2019 Posts: 36	Ultracompact derringer with superimposed loads Hello! I’ve been sketching on a small over/under derringer with the capacity of four shots. I’ve seen the superimposed concept on the forgotten weapons channel, and I thought it’s pretty neat. But I’m curious of what could go wrong. Here’s a picture of a barrel and the loads https://imgur.com/FgzHsmQ The second charge has a ”case” to support the bullet, to prevent compression of the second powder charge. I don’t know if that’s necessary? The old superposed weapons didn’t had it. I will also be using a light (about 100 grains) load of buckshots for the front charge which should keep the pressure down. And for the second load I will use a slightly overdimensioned pure lead roundball instead of a patched one. For extra sealing I’ll use some Blu Tack behind and thick paper infront, but maybe something else will work better?