Would 357 maximum brass work for the 222-rimmed? Thought I read that somewhere.
The .357 Maximum would be a bit short I think, at a nominal 1.608", for making .222 Rimmed (1.70"). It would be better to make it from 5.6x50R if you couldn't get .222R brass such as is made by Bertram. Or just go with 5.6x50R in the first place and have rather more velocity at the same pressure, and the availability of factory loads and of good quality brass.
