I have got back to reloading and all is going very well. I am trying Barnes TTSX 150 gr. in .308 Win and IMR3031. I have two very good loads with very good groups 41.7 and 41.9 gr.
But I continue to have trouble seating these bullets. The all copper design requires a series of rings and grooves on the bullet shank proper, it is though boat-tailed seriously. When I seat the bullets there are two issues:
1) Something happens every 5th or 6th round where it will not seat all the way in to the right consistent depth, though the ram goes all the way up. This is perplexing as all the press and die parts seem to be correct. I am using the Lee Pacesetter dies. I have disassembled the seating die and reviewed the element that contacts the bullet. This component seems to fit this bullet well enough. I can not see even how this is happening?
2) As the bullets go in and hit the case mouth each of the bullet rings noticeably are 'scrunched' into position. The cases do not deform and I end up with a good looking round, but it is not comfortable. And when inspecting the inside of the die with a torch you can detect micro copper shaving/residue where presumably each ring gets nicked a bit as it goes in.
I have adjusted and readjusted the die according to the instructions. The Pacesetter info says to put in a readied case and screw the die until it hits the case and give it another quarter turn in(the crimp is another die that comes after in this case). While the general instruction for seating dies normally is to hit the case and back it off by a half to whole turn. I have tried both ways with the same results.
Any pointers? I am baffled.