Here is Ackley's article on the Improved cases;

http://www.shootersforum.com/wildca...te-about-ackley-improved-cartridges.html

Also "The Varmint Hunter Magazine" just ran an article on a fast twist (1-9) 22-250. very impressive velocity from a standard un-improved cartridge.

One Ragged Hole! The quest for accuracy continues.

Bob the nailer