Just after Winchester pulled Black Talons off the market, a guy I know was detained for "possession of prohibited ammunition."
He was stopped by an Officer from one of our area Police Depts, for having a headlight out. Since AZ had just implemented Concealed Carry, the Officer asked if he was carrying a firearm. The driver said yes and surrendered the weapon for the officer to secure during the contact.
The Officer came back to his car and told him while clearing the pistol, he found BLACK TALONS!!! He told the driver this ammo was prohibited and he was seizing the pistol and ammo. He would write up a report and submit to the County Attorney for consideration for prosecution.
First thing the next morning, the driver called the gun shop I worked at and asked about the Black Talons. We told him they were perfectly legal, the Officer was wrong.
A little while later, we got a call from the driver. He'd called the County Attorney's Office and spoke to the County Attorney himself. The County Attorney was incredulous. He in turn, called the Chief of the PD and told him there was no such law and he'd best return the pistol and ammo ASAP. The Police Chief personally delivered the pistol and ammo to the owner.