Cases splitting....ideas

[mugsie]

Looks to me like work hardening of the brass. Either anneal or toss em'. the walls of the cases look a little funky as well.

[750k2]

If funds permit make the jump to hand dies (wilson) and a bump die.
Only work the brass the absolute minimum and ammo is head and shoulders above press ammo.
I still use my presses sometimes but hand dies are my preferred tools.
Between them and propane I lose very few cases now.

[scooterf79]

Die came in today....
http://i1287.photobucket.com/albums/a631/scooterf79/Mobile%20Uploads/20160111_164422_zps0zitijyn.jpg (http://s1287.photobucket.com/user/scooterf79/media/Mobile%20Uploads/20160111_164422_zps0zitijyn.jpg.html)
http://i1287.photobucket.com/albums/a631/scooterf79/Mobile%20Uploads/20160111_164438_zpsh0ni3lhc.jpg (http://s1287.photobucket.com/user/scooterf79/media/Mobile%20Uploads/20160111_164438_zpsh0ni3lhc.jpg.html)
First time Ive ever used bushing dies, Ive always used standard dies for everything....well until the last few days....wow! Im not trying to state the obvious but theres a world of difference in sizing and forming cases now!
Thanks for all the input and help guys! So the brass has been annealed and sized with the new die.....
Hopefully Ill get out to shoot in the next several days....
Scooter

[txnintn]

Scooter,
I also have a 6mm-6.5x55 wildcat and I have had a similar issue.
It has happened a couple of times to me when using a neck bushing sizer after two or three reloads. It just rips the whole neck off. I also have had one with a vertical split after firing a load.

So after I finish forming new brass cases and it's ready for fire forming, I anneal the cases. It has not happened since. I keep anneal them often!

Bowen
6mm Phoenix