Black powder pressures

[Beekeeper]

I have looked in all of the books I have and found nothing.
I am interested in finding the pressure produced in a 43 Mauser , with a 370 grain boolit using 75 grains of FFG Goex.
Am also interested in finding the same with a 577/450, 500 grain boolit with 80 grains of FFG Goex!
Any help or pointing me to where to find the data will be greatly appreciated.


beekeeper

[Chicken Thief]

With lead boolits you wont see more than @1200bar~17400psi tops.

In the development of the 8x58RD the Danes experimented with a highly compressed BP load (77gr) and a jacketed 227gr bullet. The pressure was 2400bar~34800psi max.

The theoretical absolute max. pressure that BP is capable of is something like 4375bar~63500psi.

[John Boy]

Any help or pointing me to where to find the data will be greatly appreciated.

http://www.goexpowder.com/images/LoadCharts/Cartridge-Rifle.pdf

With the known velocity & bullet weight, there is a ballistics formula to Cx the pressure. I don't have the formula in the top of my head, but it can be looked up in the reference books ... Rinker's book for starters and also Phillip Sharpes Handloading book is another