Yeah and the more bearing surface you have, the more it would affect it and the more you have to push it, the more loosey-goosey it gets. Definitely a consideration with longer VLD bullets we seat closer to the lands.Also I picked up a Hornady concentricity gauge which works great for showing bullet runout but I'm skeptical bout using it to force the bullet to be perfectly concentric, I'm not saying it wouldn't straighten everything I just think it would mess with neck tension. What are your thoughts?