I dont shoot Amaxes but do shoot 140g hornady match bullets and 142g smks. Ive only shot about 150 of the hornadys but have only had small differences in them. I just got a 500 box of the smks and they have up to .012 variation, .583 to .595 in bearing surface. I use 2 bodys and inserts to measure bearing surface 1 on the top and one on the bottom blades of my calipers and always use the same insert for the boat tail and the same one for the Ogive. Im just wondering how the longer bullets got jammed .016 if your seating die was set to seat the bullets .020 off the lands? Is the ogive shaped different or do the new amaxs just have a longer bearing surface?