>>64366603
I'm sure there was. It's really convenient to make the gun for nailgun blanks because they're readily available (assuming they are), you don't have to worry about making ammo, just put blank in and press the ball. I think it's not as popular though because due to the crime in Mexico ammo is pretty easy to come around there with no risk.
>>64366615
>NTA but don't people sometimes use those for BP primers when they can't find anything else?
They do, but I think it COULD misfire.
>And I'm sure you could double up the guts of a cap (VERY carefully) to ensure it will go off and have enough power to set the powder off.
You mean fill it with more cap powder from other caps? Or fill it with normal primary explosive like H-48?