Here are some figures for the 7x65R from
"Cartridges of the World" 4th edition copyright 1980.
Hope it helps.

7x65R:
Bullet Dia. = .284
Neck Dia. = .308
Shoulder Dia. = .422
Base Dia. = .463
Rim Dia. = .521
Case Length = 2.53
Cartridge length = 3.21