I am having some troubles lately loading some 223 ammo. I am trying to load 60 gr Hornady HP flat base bullets into chamferred mixed commercial cases. What appears to be happening is the the seater is catching the HP and attempts to seat the bullet at an angle? It is causing a deformation of the point of the bullet and bulging the neck and seating the bullets at an angle.
I am using a standard RCBS die set in a Dillon 550b. I just ran 200 60 gr SP's (again, flat base) through it at the same setting so I am really confused as to what is causing the issue.
Any ideas? Pic are as good as I can get with my phone, will try to get better photos later this afternoon/evening. . .
Thanks all and God bless you!