300/221 and/or 300 AAC BLK case gauges?
I am looking for some items to assist me in my reloading. Does anyone know if there are cartridge headspace gauges for these calibers , and can you get them with a step in the gauge so I can see if my resized brass headspace is too low or too high. Also, will the gauge work for both the Blackout and the 300/221 chambers. From what I have heard the headspace is the same on both but I would like to be sure.
|