I reloaded 40 s&w for years . I have never seen anything like that . I have seen cases that were spit like that were fired way to many times
If I were you I would trash all of that brass. This is why I stopped buying 9mm and 40S&W brass 1 fired . There is no way to see if it was fired 5 or 6 time
look at Starline brass 1000 for $154.50 Shipped to your door It is new brass .
Bin there done that . It sounds like you have milatary brass . Can you post a picture of of the head stamp ? Most hear can tell you right away what is going on.
I never pick up range brass because I have seen this befor . You never know how many times the case has been loaded or if someone was loading dam hot loads
As long as it isn't as god awfully hot as it was last year, I'll be ok. That was just brutal..... ewww just looked at the weather.... Shower anyone?
. Hot is right !!!! It was dam hot last year still a good time . see you there