The Underwood XTP .40 S&W 155gr load (Underwood Ammo part no. 223) is a box of 20 rounds of defensive handgun ammunition from Underwood Ammo. A Hornady eXtreme Terminal Performance jacketed hollow point, designed for deep penetration and controlled expansion, rides in a nickel-plated brass case at a rated 1300 fps and 582 ft-lbs. Underwood lists the use as medium game and personal defense. The 155-grain weight makes it the lighter, faster option among .40 S&W hollow points.

Key Specifications

• The cartridge is .40 S&W, the single designation Underwood lists for this load.
• Bullet weight is 155 grains, the weight Underwood lists for this load.
• The bullet is a Hornady eXtreme Terminal Performance (XTP), a jacketed hollow point that Underwood describes as built for deep penetration and controlled expansion.
• The bullet material is copper and lead, and Underwood states it does contain lead.
• Muzzle velocity is rated at 1300 fps, the figure Underwood publishes for this load.
• Muzzle energy is rated at 582 ft-lbs, the figure Underwood publishes alongside the velocity.
• The case is nickel-plated brass, as listed on the maker’s product page.
• Each box holds 20 rounds, the pack size Underwood publishes for this item.
• Underwood classes the load as supersonic, meaning it travels faster than the speed of sound.
• Underwood lists the use as personal defense and medium game.

Frequently Asked Questions

What bullet does this .40 S&W load use? It uses a Hornady eXtreme Terminal Performance (XTP) jacketed hollow point at 155 grains, which Underwood describes as designed for deep terminal penetration, accuracy and controlled expansion.

Is this load safe to use in a suppressor? Yes. Underwood lists this ammunition as safe to use in a suppressor.

Buy the Underwood Ammo XTP .40 S&W 155gr Jacketed Hollow Point, 20 Rounds

Order it when you want a light, quick .40 S&W hollow point from a maker that nickel-plates its cases for smooth feeding. Get fast, insured shipping from our Lubbock, Texas gun shop and see more handgun ammunition.