Seating depth consistency woes

[Pathfinder76]

Reloading for my 6.5 CM I'm having a bear of a time getting consistent seating depth. Now this happens, loads are compressed, brass gets hard, bullets stick in seating stems etc. However, I don't think any of these are an issue and I'm getting over 5 thou variation in seating depth weather measuring off the ogive or the tip. Loads are not compressed, I'm using Lapua brass, 2 thou neck tension and a forster bench rest seater. The bullet is the 130 ELDM and I'm guessing the seater stem shape is to blame. That and the fact that that bullet is super soft up front.

That said, I was shooting it to 1125 yards this week and accuracy wasn't seeming to be an issue but its driving me nuts. I'm tempted to switch to the Redding competition seater and monkey with different stems. Anyone have any words of wisdom? Thanks.