lake city brass

  1. J

    seating depth test 8208xbr/77gr smk

    I just worked up a load for my ar15, it's a rifle length 18" ballistic Advantage barreled upper in .223 Wylde. A basic lower with a rifle length buffer tube/buffer. This is my first load work up and I want to do a seating depth test to see if I can tighten the group (just under 1 MOA) up but...