What is the differences in the .43 Spanish and the .43 Egyption. Is there a site where I can obtain some measurements of each to compare against my casting. TIA.

Basic differences:

.43 Spanish
Actual cartridge designation is 11.15x58Rmm
Original military load was 375 grain bullet with 78 grains of black powder for a velocity of 1380 FPS.

.43 Egyptian
Actual cartridge designation is 11.43x50Rmm
Original military load was 400 grain bullet with 75 grains of black powder for a velocity of 1330 FPS.

The .43 Egyptian is interchangable with the 11x52Rmm Beaumont, the .43 Spanish is not.

Thanks much. I can get a better idea what I have with the case length measurements. 8mm is quite a lot.

From COTW
11.15 Spanish Rem-------11.43 Egyptian
Bullet dia ---.439 -------.448
Neck dia -----.458 -------.479
Shoulder dia -.512 -------.542
Base dia -----.516 -------.581
Rim dia ------.635 -------.668
Rim thickness .082 -------.085
Case length -2.25 -------1.94
OAL ---------2.82 -------2.73

There's also a 43Turk, 43Mauser, and a host of others from that era.