The barrel is marked ".22-30/30 A.I." and the dies, which are Redding, are marked ".22-30/30 A.I. 40 deg.". The rechambering was done in 2003 by Fred Zegler at Z-Hat Customs in Casper, Wyoming and a fine job he did. It easily pushes 65-70gr. bullets to 3150 f/s compared to 2800 f/s for the standard Hi-Power out of a 20" barrel. According to Ackley from his book, the only difference between the two are neck dimensions and pilot used. It is a very modern looking cartridge. If I can figure out how to post a pic., I will.
Dave.
