Ok this has been bothering me for some time. I have been taught to measure for every type of bullet and do so religiously. I measure the throat depth on my rifle for each bullet to determine the seating depth. I seat at 0.015” OTL. I am getting a new barrel from Benchmark Barrels. I plan to use the Berger 185 Juggernauts and the 200.20X as my primary rounds for F-Class TR. In discussing the throat depth with Benchmark and Berger it was decided to load a dummy round with the 200.20X and cut the throat for that round. While doing the setup I measured the case and the bullets carefully to decide on the depth of the bullet. I was concerned with the possibility of compressing the powder so wanted to take it all into account. The thing that has always bothered me and really got me to thinking is that when measuring the shell and bullet for the length to the Ogive why does the end measurement change between different bullets when measuring to a single rifles lands? Using the same comparator, shouldn’t the end result of the measurement of the round come out the same regardless of the bullet? We are measuring a length form the base of the case to a constant (the comparators ID) which represents the rifles lands.