I purchased some of these for my 30.06 in case I ever have to use a lead free bullet for something. I understand that the regular loading for the Hornady SST data is good to go so I have a good load for that bullet. I went to seat the rascal and realized that my normal seating depth is going to put the crimp in between the two grooves on the bullet. I then realized that I may have a situation where I don't know something about these all copper bullets. Does it matter where you crimp, or if you crimp or what kind of crimp. I checked Hornady web site but no help. I did look at a pic of a loaded round and did not see the top groove so I assume the round is seated in that groove. I could seat there but the round is going to be pretty short. nA lot more of the bullet is going to be further down in the case that any bullet I have ever loaded. Maybe you guys that load Barnes bullets could shed some light on this.