There is a range near me, that has a "no Blazer" policy, but it has nothing to do with sorting brass cases.
They have a board with two pistols mounted on it, that have blown up, from the owners using Blazer alloy cased ammo. One Pistol is a Smith J-frame 38 revolver and the other is a Glock 19. The blown Blazer cases of each are on display as well. Not exactly crappy guns.
The gunsmith there claims that the Blazer cases ruptured in these two guns on their range and this is why they do not allow the use of Blazer alloy cased ammo. They claim the alloy cases can be weaker than brass. They DO allow Blazer Brass ammo, though.
The gunsmith is one with about 20 years expereince and he encourages everyone to stay away from the alloy cased Blazer ammo, period.
I, for one, am heeding his advice. I stick to Winchester White Box in my 40 and 45s and 9x19s. It seems to be good accurate practice foder and why take the chances for another dollar or so a box? Surely your vision and pistol are worth more than a dollar or so extra...right?
-Brickboy240