Did you chamfer the inside of the neck? It's hard to tell from the photo. I use a VLD chamfer tool for these types of bullets. I use the Redding Premium 6.5 Creedmoore die set and it had a smaller decapping pin that worked great with the Lapua brass. Neck tension was perfect with both the full length and neck dies. Their seating stem fit the 143 ELDX's very nicely and left no marks. If your looking for precision, this set up worked well for me and was much less expensive than the competition stuff.