When to anneal 2506 ackley brass formed from 3006 lapua brass

Yea
Bushing dies are pretty bad for forming brass.
Why is this? The bushing die did less damage to the brass than the neck die?

I only used the bushing die after running the brass through the 25-06 form die.

Sorry for so many questions. I am still learning after loading all my life. This site kicked me into overdrive and kindled my OCD.