Federal Premium HST 9mm ammunition is a specific type of ammunition manufactured by Federal Premium Ammunition. Here’s some information about this ammunition:

1. Caliber: “9mm” refers to the cartridge size, which is also known as 9x19mm or 9mm Parabellum. It is one of the most widely used handgun cartridges worldwide.
2. Purpose: Federal Premium HST ammunition is specifically designed for self-defense purposes. It is engineered to provide reliable performance and effective terminal ballistics, making it a popular choice among law enforcement agencies and concealed carry permit holders.
3. Bullet Type: Federal Premium HST ammunition typically features a Hollow Point (HP) bullet design. The hollow point cavity is designed to facilitate controlled expansion upon impact with the target, creating a larger wound channel and maximizing stopping power.
4. Bullet Weight: The specific bullet weight for Federal Premium HST 9mm ammunition may vary depending on the particular product variant. Common bullet weights for 9mm HST ammunition range from 115 grains to 147 grains.

Federal Premium is known for manufacturing high-quality ammunition, and the HST line is no exception. It is designed to provide reliable performance and excellent terminal ballistics, ensuring effective stopping power in self-defense situations.