[Nitro.45]

agreed, but its the only way I can shoot a lot without paying a lot, I've used this exact steel ammo many times before with no issues.

It has clearly caught up with you!
10 bucks says without cleaning or doing anything to the weapon or mags, that brass FMJ will function perfectly right away. One slight manufacturing difference with that cheap steel could make a difference.

 

[Nitro.45]

Yeah, but you had a “gun” issue whilst using brass.
In the case of feeding or extraction issues, I would point to steel cased junk first if that was what you were using. Someone here once said that they can’t believe that folks can manage to afford an expensive firearm, only to turn around and put the worst junk ammo through it. My mindset is the same. Steel and aluminum is low price point ammo. The powder is filthy and the projectiles are bargain. That’s no fun, unless you like shooting paint cans from 10 feet.

 

[Nitro.45]

Better clean it thoroughly again! 🙂