Has anyone used the RCBS precision mic for measuring headspace? I got one a couple of months ago for my 30-06 and have been testing it out. Frankly I have been less than happy with the tool. It also comes with a gauge to measure OAL. That thing has just about driven me to insanity. Very difficult to get an accurate measurement out of and just generally a pain. The mic for measuring headspace works ok but I have since bought the Hornady tools for taking those measurements and they work alot better. Has anyone had good luck with the precision mic? I used to be an RCBS fan but lately I get less and less impressed with their equipment.