It's hard to see what you're trying to show. Is it a dent from impacting the slide during ejection? If so, no big deal.
It's a sign of mild ammo. If pressure were higher the case would seal better and prevent the scorch marks. WWB is not exactly hot. If it's accurate and reliable, it's nothing to worry about.
WWB, like most cheaper ammos, uses cheaper/dirty powder. That is normal with dirty powder. If you reload and use Unique all your cases will look that way. Nothing to be worried about.
I've wondered this too. I blamed the ammo. I switched to a different brand for target practice (it was just the cheapest at that particular store) and the same thing happened with my 1911. I just figured since it never happened before, and it was uniform, it must be the ammo.
Of course the casing gets hot- you just had a fire/explosion inside of it- the heat is what causes the rapid expansion of gasses. Wait until you get a hot casing drop down the neck of your T shirt (Well, looky there- he CAN dance!) A mild powder charge may not fully an immediately seal the brass case against the walls of the chamber (as was already said up there). Some of the carbon from the powder burning is pushed between the casing and the chamber wall, leaving little sooty marks on the case. Normal.
Are you referring to your lack of pants? The WWB ammo in .45 is certainly strong enough to blow your pants right off.
Lol, I was thinking the same thing.. I worry with the way my mind works.you should probably worry as well
