Out of Wildcat Cartridges Vol 2
Cartridge OAL 2.980"
Case Length 2.300"
Rim diameter .545"
Rim thickness .060"
From base to bottom of shoulder 1.805"
Diameter just ahead of rim .457"
Diameter at bottom of shoulder .441"
Diameter at top of shoulder/bottom of neck .287"
Diameter at casemouth .282"
*Forgot to mention shoulder angle listed is 35 degrees*
It is written that it is ballistically identical to the .257 Roberts Ackley Improved. Should shoot pretty flat. I thought about doing one on a British Enfield once upon a time.
[This message has been edited by BigBores (edited 05-14-2002).]