That sounds like the Hornady steel case training ammo, right?
(Not the regular brass cased TAP ammo?)
Hornady® Training ammunition provides a cost-effective alternative to the standard TAP® loads for tactical training. Loaded with Hornady® bullets and proven propellants coupled with a higher quality lacquer-coated steel case and berdan primer, Hornady® Training ammunition is designed to deliver point of aim / point of impact consistency when compared to comparable TAP® offerings. Hornady® Training Ammunitionan economical, high-quality solution for Law Enforcement training.