So looking through my catalogs, Hornady offers a 2 die set for the .308 Win which has the size/deprime and the seat/roll crimp. But Dillon offers a 3 die set for .308 Win which has the size/deprime, seat, and then the taper crimp. Is there a certain advantage to using the taper crimp? I am shooting a Savage 111 so I figured a roll crimp would be fine. Does the taper crimp only become necessary if I am reloading 7.62 for an auto?