I think I understand the guages and their headspace measurement along with measuring of fired cases to get an idea of individual chamber headspace. Admittedly my googiefie is suspect, and I haven't spent much time looking, but on the unfired ammo itself, I cannot find "headspace" max/mins. Just distance of shoulder breaks from the base.
Would someone please straighten me out and educate me as to the minimum headspace for unfired 223 and for 556 ammo? Thanks
Bookmarks