I was doing a seating depth test for my dasher with 107 vld's and ran into a problem. I couldn't set my Wilson seater die with the vld stem to give me consistent results. Long story short I measured base to ogive with the stoney point 243 insert and then the 22 insert, a 20 or 17 cal would be better, and subtracted the two measurements. From bullet lot to lot I measured .014 difference. I also measured a .003 difference with in the same lot. The seater stem contact point to ogive varied making it impossible to get consistent seating results. My solution was to seat the bullets .030 long and then measure each round from base to ogive and adjust the seater to achieve the desired depth. ES ended up around 3 to 5 and I was a happy camper.