Years ago I started loading my 7mm rem mag with Lee dies and had some run-out problems after seating so I took the seating stem out of the die and set it on the top of a bullet I was using at the time, and I didn't like the way the stem set down over the bullet point so I switched to RCBS, and took the stem out of that die to get perspective and it was amazing the difference in fit over the tip of different bullet styles, the Lee for some reason did not fit well, and I'm sure it caused certain runout in my finished cartridges..... just looking back.
