Underwood Ammo 678Xtreme Defense Platinum .380 ACP 68-Grain Solid Monolithic Handgun Ammunition, 20 Rounds

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Item # 611359799

$29^.99

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Shop all Underwood Ammo

New Arrival

Underwood Ammo 678Xtreme Defense Platinum .380 ACP 68-Grain Solid Monolithic Handgun Ammunition, 20 Rounds

Item # 611359799

$29^.99

New Cardmembers earn a $20 Reward^‡ with qualifying purchase of $20 or more plus earn 5% in Rewards⁺ on this purchase. Valid through 8/9/26.

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Free standard delivery on online footwear & Clothing purchases of $49 and over.

Notice:

This Item cannot be shipped to AK, CA, CT, DE, DC, HI, IL, LA, MD, MA, NJ, NY, NC, RI, SC, WA.
This item is non-returnable.

Neighbor’s Club Members earn points with purchases.

The Xtreme Defender is based on the Xtreme Penetrator product line. The XD ammunition has an optimized nose flute, total weight, and velocity to achieve a penetration depth up to 18 inches with a permanent wound cavity (PWC), no other expanding hollow point comes close to achieving anywhere near this diameter and volume. Not only is the PWC over 100% larger than any other expanding bullet, expansion is achieved despite being shot through barriers. The solid copper body ensures that wallboard, sheet metal, and automotive glass will have no effect on the Permanent Wound Channel. Nickel-plated brass casings, the nickel plating process provides several key benefits, not limited to but including; improved feeding in all actions of firearms enhanced corrosion resistance over traditional brass, improved cosmetics, and ease of cleanup during reloading. Nickel-plated casings will not tarnish like brass during storage or when in contact with foreign materials such as leather, moisture, and other metals.

Xtreme Defender (XD) is based on the Xtreme Penetrator product line
XD ammunition features an optimized nose flute, total weight, and velocity
Claimed performance: penetration depth up to 18 inches with a permanent wound cavity (PWC)
Claim: no other expanding hollow point achieves similar diameter and volume anywhere near this
Claim: PWC is over 100% larger than any other expanding bullet
Claim: expansion still occurs even when fired through barriers
Bullet construction: solid copper body
Claim: wallboard, sheet metal, and automotive glass will not affect the Permanent Wound Channel
Casings: nickel-plated brass
Claimed benefits of nickel plating: improved feeding in firearms, enhanced corrosion resistance, improved cosmetics, easier cleanup during reloading
Claimed storage/handling benefit: nickel-plated casings won't tarnish like brass, even when stored or when contacted with leather, moisture, or other metals
Application/Use: Personal Defense
Bullet Type: Solid Monolithic
Bullet Weight: 68 gr
Caliber: 380 ACP
Casing Material: Nickel-Plated Brass
Coefficient: 0.09
Gun Type: Handgun
Muzzle Energy: 255 ft lbs
Muzzle Velocity: 1300 fps
Rating: Supersonic
Rounds Per Box: 20
Sectional Density: 0.08

Brand	Underwood Ammo
Country of Origin	Made in USA
Ammunition Type	Fluted
Caliber	.380 ACP
Case Material	Nickel Plated
Firing Pin Type	Centerfire
Grain Weight	68 Grain
Muzzle Velocity	1300 fps
Package Quantity	20
Manufacturer Part Number	678

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