The Tesco type Epress bullet was a jacketed bullet that was/is available for 9.3x72R and 8.15x46R, but I don't believe it is any longer available in the diameter you need. I believe you would be best served by a cast bullet weighing from 235-255 grains with a shank about .002" over groove diameter and a blunt nose section of bore(not groove or bullet) diameter to half a thousandth inch less. These are general dimensions, and any custom mold maker will be happy to help you work out the specifics.
Mike
