L3n4rd,
You did good buying it.The 118.35 gauge usually equates to a groove diameter of .357-.359", instead of .365-.366"for 9.3x74R. Raimey mentioned 9.3x72R S&S;it is so similar to 9.3x74R, that I shot 6 Red Deer with mine using 74R ammo, before finding out the mistake.It only blew one primer.It doesn't matter much which case you need, you can make ammo to use, and have fun doing it.If you think that is too much trouble, I will be happy to give your money back.
Mike