Originally Posted by HunterGreen
I am in market for a bullet jacket thickness gauge, please help on what product work's best. 6mm and 7mm, with Normal caliber I noticed from 1-2thousand difference in thickness.. I need a better way. Thanks
IF you are measuring only jackets without a bullet core in them, then a ball micrometer is the tool.
IF you are trying to measure the completed bullet diameter (which is what it sounds like), a blade micrometer is a better tool than a caliper. If you are truely finding a .001 to .002 variance, my bet it is more the variance in the tools ability to measure vs actual diameters.
IF you are trying to measure the jacket thickness AFTER a core has been seated, then forget it. Not going to happen with any degree of accuracy.