Originally Posted by Angus1895
Am I wrong in promoting the following Therom:

The straighter the case becomes.....the more footpounds of energy is produced per grain of powder burned?

Thanks

You're correct in that case capacity to bore volume ratio matters, but the max average pressure of the cartridge matters as well.

That said, If two cartridges have the same capacity and operate at the same pressure, the one that as a larger diameter bore will be more efficient, ie, "the more foot-pounds of energy is produced per grain of powder burned."

I belong on eroding granite, among the pines.