Re: Hornady's bullet comparator instructions
1) Thread the brass thumbscrew into the hole that pinches across the slot at one end.
2) Slide the red comparator body onto the stationary jaw of the caliper and lightly tighten the brass thumbscrew to lock it in place
3) Insert the 223 ogive insert into the red comparator body and use the little set screw to LIGHTLY lock it in place
4) Close caliper jaws and zero out the calipers
5) Insert loaded round into the calipers and measure the distance from base to ogive.