I purchased my Star, exclusively for nose first sizing. Two reasons...........concentricity and for sizing spitzer shaped bullets. Prior to that, I used a RCBS LAM base first sizer. Occasionally, I found that the bands of some bullets were uneven, after going through the LAM...............figured it would cause flyers, especially with rifle bullets.
Since most bullets are have tapered noses, seems to me that, dropping a bullet in nose first would aid in self alignment for concentric sizing.
Winelover