+1 for Uncle Nick.
Seating stems in Lee dies, and perhaps others, are easy to modify for a particular bullet profile. If you have a basic understanding of bedding a rifle, then you can make your seating stem match the bullet profile. Simply coat the nose of a bullet with grease or wax, then mix up a dab of epoxy. Put the dab of epoxy in the recess in the seating stem and put it on the nose of the bullet. Wait until the epoxy hardens and remove the bullet. Voila, a perfectly formed seating stem for a particular bullet. I have three of those stems in my .45-70 dies. One for flat-nosed lead bullets, one for round-nose lead bullets, and one for Lee's pointy 459-500-3R bullet. Lee sells those extra seating stems for $2.00 each.