Unclenick,Hatcher did not start out with his test to test extractors, he started out to determine a preconceived notion a case would come apart with excessive head space, his experiment was about deterring the amount of head space the case would tolerate. he was correct, a case fired in a chamber with .050 to .080 thousandths will suffer case head separation, Hatcher’s experiment failed because of the process of selection.
Hatcher was unaware the case shortened when fired in his new creation, the 30/06 Hatcher Modified, had he measured the length before and after and found the case did not shorten he would have know his experiment was working and all he had to do was advance the reamer to increase the length of the chamber, fire and then look for the bright ring around the case ahead of the case head.
Last edited by F. Guffey; March 13, 2012 at 08:19 AM.
Reason: correct thousands to thousandths