I got to shoot three 50 round boxes of National Police Ammunition's Simulated Duty Round. It's a lead-free, frangible ammo made to mimic duty rounds for practice in handguns, rifles, and shotguns.
Testing National Police Ammunition's Simulated Duty Round | ThinBlueFlorida.com
I fired .380ACP, .40 cal. S&W, and .223 Rem in a P3AT, Sig P226, and RRA LAR-15, respectively. All the rounds functioned without malfunctions or misfires.