Gunsmithing M16 Extractor Question

jafa100

Private
Minuteman
Mar 30, 2010
14
0
62
what is the correct depth to mill a 700 bolt for M16 style extractor on a 308 bolt face? It seems to me if you are not carefull you could mill into the firing pin hole. The instructions that Badger Ord. sent are for a 338 Lapua. A 308 needs to be deeper. Thanks for the help.