9.3/375 Remington Ultra mag

Is this one the 375 Ultra necked down to 9.3 with the same neck angle? Carbide?

If so, I will take it.

Do you have a drawing?

I have 1000 375 ultra cases that I bought from Midway back in about 1983. About time to do something with them!

Thanks!

Survivor of the 13th Original Colony, I escaped on December 17, 1968.