When we last tested Wilson Combat ammo, it was the company's .380 ACP load. Today we step up to 9 mm. This load uses the very ruggedly built Hornady XTP bullet. These bullets have a reputation for deep penetration and their uncanny ability to deal with intermediate barriers thanks to their construction. Bullets of this type generally do not expand overly wide, so wound cavities are narrow, but deep. The Wilson Combat 115-grain 9mm XTP load perfectly illustrates classic XTP bullet performance.