WINCHESTER - 40 S&W - 165 GR - JHP - 20 RDS/BOX

Winchester Ammunition
MPN:
S40SWPDB
UPC:
020892217850
$32.69
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The Winchester PDX1 Defender in .40 S&W delivers FBI-protocol-tested terminal ballistics engineered for serious personal defense, offering the stopping power and reliability you need when it matters most.

  • Bonded JHP bullet welds jacket to core for deep, controlled penetration
  • Engineered to expand up to 1.5x original diameter on impact
  • Tested and optimized to meet rigorous FBI terminal ballistics protocol
  • 165-grain projectile launches at 1,140 fps for effective energy transfer
  • Consistent primer and powder charge delivers reliable feeding and ignition
  • Packaged in 20 rounds per box — ideal for carry loads and practice evaluation

Who This Is For

The Winchester PDX1 Defender .40 S&W is built for concealed carry holders, law enforcement professionals, and home defenders who demand proven stopping power from every round. If you carry a .40-caliber pistol — whether a Glock 22, Smith & Wesson M&P40, or similar platform — and refuse to compromise on self-defense performance, PDX1 is the load purpose-built for you.

Winchester PDX1 Defender 40 S&W 165gr JHP 20-round box front view Winchester PDX1 Defender 40 S&W bonded hollow point bullet detail

Specifications

BrandWinchester Ammunition
Product LinePDX1 Defender
Caliber.40 S&W
Bullet Weight165 Grain
Bullet TypeBonded Jacketed Hollow Point (JHP)
Muzzle Velocity1,140 fps
Muzzle Energy~476 ft-lbs
ExpansionUp to 1.5x bullet diameter
Rounds Per Box20
Test StandardFBI Terminal Ballistics Protocol
CasingBrass
Primer TypeBoxer, Reloadable

Frequently Asked Questions

What makes the PDX1 Defender different from standard hollow point ammunition?

Winchester's PDX1 Defender uses a proprietary bonding process that chemically welds the copper jacket to the lead core. This prevents jacket separation during penetration, ensuring the bullet retains more mass and expands consistently — even through barriers like heavy clothing. Standard unbonded hollow points can shed jacket material, reducing penetration depth and terminal effectiveness.

Is this ammunition compatible with all .40 S&W pistols?

Yes — Winchester PDX1 Defender .40 S&W is compatible with any standard .40 S&W chambered pistol, including popular models from Glock, Smith & Wesson, Sig Sauer, Springfield Armory, and others. As with any defensive ammunition, it is recommended to fire at least a partial box through your specific firearm to verify reliable feeding and ejection before trusting it for carry.

How should I store unused PDX1 Defender ammunition?

Store Winchester PDX1 Defender ammunition in a cool, dry location away from direct sunlight, moisture, and extreme temperature fluctuations. Keep rounds in their original box or an airtight ammunition container to preserve primer sensitivity and powder integrity. Properly stored, factory centerfire ammunition can remain reliable for decades.

Caliber:
40 S&W
Bullet Weight:
165 GR
BulletType:
JHP
Purpose:
Self Defense
Type:
Pistol Ammunition
Box Quantity:
20
Case Quantity:
200
Lead Free:
No