Anybody know the actual dimensions of Bertram .222 Rimmed Brass? I need to know the case body diameter next to the rim, the rim thickness and rim diameter. Looking for better parent brass for a wildcat. Thanks in advance.

Here are the case dimensions,well that is if the copy and paste works.

http://ammoguide.com/cgi-bin/a...VrFwibRSVX&catid=498

You might look at 5.6X50R brass for a parent case.

5.6 x 50mm R Is the parent cartridge. Not a bad looking little cartridge, I think it would be interesting to play around with in a Ruger No. 1.

Those dimensions from the Ammo guide site look like they will work for me, guess I will order some and give it a try. Thanks much for the help.