243winxb
Member
Yes, different brass, different neck tension & accuracy. Looks like the OP has it working. Good job.Update- Loaded up a few rounds.
Was able to deprime and full length size in 38 dies, then only used the Dillon 9mm expander die/powder funnel which made the difference.... neck tension was much, much better. I applied a crimp adequate enough so the rounds chambered.
This is a case where using a mixed batch of headstamps would have been....nothin' but trouble.