thanks for your input. To address some questions: run-out is .007" at the ogive. The bullet (130 gr. Sierra SP) seems to fit just fine in the seating stem. Contact of the bullet in the stem is just forward of the ogive. I have seated one bullet with the lock ring of the die not tightened. This reduced the run-out on this one bullet to .004". I've checked neck thickness at 4 points inside the neck and with a caliper it varies about .001- .0015".
