I've got both a #3 and a #4. The 4 is installed on a rifle that passes headspace with a #2 bolthead. I'm guessing it was used to tighten things up for target shooting.
I've got both a #3 and a #4. The 4 is installed on a rifle that passes headspace with a #2 bolthead. I'm guessing it was used to tighten things up for target shooting.