Hi guys,
I m brand new to this forum.
I probably don't have as much experience as most of you, but I might have a little trick to reduce the amount of cave in just below the shoulder when forming brass.
The other day I was playing with a set of 6.5 creedmoor dies and some 308 brass(federal shot once). Brass in 6.5 creedmoor is not available here in nz.
I removed the spindle and olive from the FL sizing die.
I started to resize the first few brass and all of them where cavin in.
What I did next with the next lot of brass was pushing the case in the die till I felt a little resistance when starting to shape the shoulder,drew the brass out of the die, turn the case 180degres,push it back in a little bit more in, move it back,turn the case 90 degree,push it in a bit more, move it back and then another last turn at 180 degree and a last push in the die to finish.
So the sequence is something similar to 12 o'clock,6oclock,9 o'clock ,3 o'clock .
Lub is essential of course.I use Lyman (I never had. Chance to try the others).
The next step is using a k and m mandrel to size the neck back up and turning the neck down with a k and m neck turner.
I do not know how well that trick might do for you and your 6mm brass.
But please give it a try and let me know how it goes.I would also be glad to know how it work with Lapua or Norma brass.
Good luck.
Nic
I m brand new to this forum.
I probably don't have as much experience as most of you, but I might have a little trick to reduce the amount of cave in just below the shoulder when forming brass.
The other day I was playing with a set of 6.5 creedmoor dies and some 308 brass(federal shot once). Brass in 6.5 creedmoor is not available here in nz.
I removed the spindle and olive from the FL sizing die.
I started to resize the first few brass and all of them where cavin in.
What I did next with the next lot of brass was pushing the case in the die till I felt a little resistance when starting to shape the shoulder,drew the brass out of the die, turn the case 180degres,push it back in a little bit more in, move it back,turn the case 90 degree,push it in a bit more, move it back and then another last turn at 180 degree and a last push in the die to finish.
So the sequence is something similar to 12 o'clock,6oclock,9 o'clock ,3 o'clock .
Lub is essential of course.I use Lyman (I never had. Chance to try the others).
The next step is using a k and m mandrel to size the neck back up and turning the neck down with a k and m neck turner.
I do not know how well that trick might do for you and your 6mm brass.
But please give it a try and let me know how it goes.I would also be glad to know how it work with Lapua or Norma brass.
Good luck.
Nic