It is my understanding that the force on a break top latch is not directly related to pressure, but a function of recoil on the barrel mass and bullet friction.
When downloading for the Iver Johnson break top revolver that my grandfather carried in the Alaskan gold rush, I look for a low recoil and low friction load.
The latch has a tiny eye [with a screw through it that pulls on the eye] that can elongate and make the break action loose.
I have been shooting soft lead balls with one grain of fast powder. I know that won't wreck Grandpa's old 38 S&W.
When downloading for the Iver Johnson break top revolver that my grandfather carried in the Alaskan gold rush, I look for a low recoil and low friction load.
The latch has a tiny eye [with a screw through it that pulls on the eye] that can elongate and make the break action loose.
I have been shooting soft lead balls with one grain of fast powder. I know that won't wreck Grandpa's old 38 S&W.
