07-07-2021, 12:58 PM
(07-06-2021, 11:40 PM)twocuts Wrote: I ordered 6.5 Grendel Lapua brass and resized it with the Hornady die set based on the suggestion above.
Everything went well until I went to seat the Hornady 108 ELDM in them.
I'm crushing the cases. I have readjusted the die several times and have no change. It seems that I can slowly get the bullet to seat on the first one when I keep making fine adjustments until I get to m seating depth. Then the very next one crushes when it cams over.
I use a 6mm expander mandrel after sizing and before trimming. I even did it again just in case of spring back. Nothing seems to help.
The Hornady brass that I have been using continues to seat just fine.
It acts like it is crimping then seating and pushing the case down but I did not adjust it to crimp. I never crimp the Hornadys either.
I do not lube when I am seating in a case full of powder.
Has anyone else seen this with the conversion using Lapua brass.
BTW, This is for my gas gun.
I think I solved this. That Lapua case is thicker by .03mm. I got it working by using graphite on the bullet before I seated it. Seems to be working now.