The most recent Rifle Shooter states the water capacity for the RCM's is 68-72 grains, while the 300 WSM holds 79 grains, if it helps your thesis.
I just remembered that the Barnes #2 manual lists the case capacity of each cartridge using water. They list the following:
- 350 Rem Mag - 73.74 gr
- 35 Whelen - 72.63 gr
- 338/06 - 73.17 gr
- 30/06 - 68.01 gr
With the 350 Rem Mag available in my opinion there is no good reason to do a wildcat on the RCM case. Using the WSM case would get some what more velocity and may be the way to go. I wonder what would happen if Hornady used their "special" powders in the cartridges listed above. An interesting thought.
