The functional difference between steel and aluminum vs brass is steel aluminum cases dont have the elasticity of brass.
This means they dont expand well and seal the chamber well gasses then bypass the case and work into the bolt/bolt face area. Once extraction starts steel aluminum doesnt contract as much as brass once the pressure drops after the bullet leaves the gun.
This can lead to hard extraction, stuck cases, or even case seperation. Firearms that dont have chromed chambers or slightly larger chambers can have issues. In general blazer works fine but dirties the gun more.
I wouldnt use it for anything beyound plinking/training if i had a choice
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...