Hi Busta,
OAL with primer 1.785
OAL no primer 1.688
powder end is drilled .218 dia./ .285 depth and is flatbottom counterbored .430 dia/ .070 deep
close as I can measure with dial calipers
Darrel
Thanks TooTall.
Does your look like the following? This is a post I did at MM, after a poster sent me some pics.
Thanks for the measurements.
This is the old 5/8"-18 pre-FPJ 209 breech plug. This one could be machined down at either end, preferably the primer end, maybe just a couple drills and a drill press would do it? Would just have to go easy until you get the right depth, then remove some of the wall. Approximately .260" to .265" would need to be removed. Notice, this one has more meat on the walls of the primer pocket. Pics, compliments of Night at MM. Thanks!