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In matchlocks and flintlocks, there’s an open hole at the chamber area where pressure is released. It’s somewhat similar to a pressure nozzle in a rocket, but the rocket doesn’t weight as much as a firearm which allows it to move more easily, generally speaking. So my question is, does the...

How much pressure will escape from a vent-hole based on the size of the vent-hole? How much velocity will be lost based on caliber and barrel length regarding the size of the vent-hole? For example, when the caliber and the gunpowder load is small it makes sense that the vent-hole also has to...

I made a gun that blew apart today. It was made as a 3-shot muzzleloader, with three individual barrels lined up at top of eachother (similar to the cartridges i described in the ”how strong are cartridges” thread I made a couple of days ago). As a source of ignition I used electrical igniters...

When a brass cartridge is ignited, it expands into the walls of the chamber. If a cartridge would be ignited outside of the chamber, it would blow up. In a chamber where the cartridge isn’t fully supported it cracks. So my question is, what would happen if you made a oval chamber that could...

Hello! I wounder if it’s possible to rapid fire/speed load a muzzleloader? To start with, the gun itself should have a short barrel and a big muzzle, like a blunderbuss for fast and easy reload. It should also have a permanent heating element in the chamber so that it won’t require new priming...

Hello! Do anyone know what’s the wall thickness of the cylinder of the Ruger Old Army? I read this article https://www.guns.com/news/2019/08/14/cap-ball-revolver-redux-remington-new-army-v-ruger-old-army and it seem that the original Remington New Army had much thinner walls. Why? The steel was...

Hello. I’m about to make a very small black powder derringer in cal .41, Philly style. I want to make the barrel very short, and I read that derringer-barrels could be as short as 1.5” back in the days. But such a barrel will lose alot velocity, especially with black powder that burns relatively...

Hello. If two barrels of the same length where loaded with the same amount of powder and with projectiles of the same weight, but of different calibers, will then the stopping power of the guns be equivalent? I made a picture just to clarify what I mean https://imgur.com/a/yvu6cns

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...