Hey Mike, .0015" is a few ten-thousandths and less than .002" on your caliper or mic. When machinists use mic's that measure in ten thousandths they are expressed in tenths and not, a few thousandths. What you are showing could be expressed as 1 1/2 thousandths (a few?), or 15 tenths. Not trying to be overly critical, but short case/headspace issues deserve very careful detail and attention to it especially if the shoulder is short and still has a full length neck! That is what I'm reading into this!