A bunch of you guys are measuring bearing surface and base to caliber for boat tails and base to ogive. All of which are length measurements. Are any of you measuring bullet diameter (maybe to +/- .0001") to see if there is a corelation to the length measurements? Would a longer BS corespond to a bullet with a larger diameter? By my thinking it should and if so I might be able to sort bullets based on diameter since I have a micrometer but I don't have a bunch of money for the other fancy gauges. At the very least this measurement should increase or decrease drag on the bore within a given BS length. Yes? No?