Have a NOS R700 in 223. The extractor requires excessive force to grab case head. I remember reading a fix for this but can't remember it or find the thread. Bought and set in back of safe. Can't not have a spare or two! Got it out and discovered you needed a rubber mallet to get bolt closed with a case in the chamber. Does a number on the edge of rim where in snaps over. Not a headspace or length issue. Brass scraping can be found in the bolt head recess. Seems it was to remove some metal from extractor but where. If any one remembers this problem and it's fix please let me know what it is.
Frank
Frank