What are you looking for?
Copy Link to Share
Share Title

5.56mm, 64 Grain

S556PDB $$$$
Specifically designed for modern sporting rifles, Defender 5.56 provides the ideal balance between expansion, retained weight and penetration in personal defense situations.
Brand: Defender
Rounds per box: 20
Rounds per case: 200
Sure Feeding
Bullet profile promotes sure feeding and initiates quick expansion
Maximum Terminal Performance
Tapered copper alloy jacket contoured to control expansion
Impact, Shock, and Penetration
Extruded Solid Base® jacket and solid core maximizes retained weight and penetration
Low Flash
Reduced muzzle flash for low light applications
5.56mm, 64 Grain Features
You Might Also Like
Earn Cash Back on Your Favorite Winchester Ammunition Products

Winchester offers a wide range of rebates throughout the year – see if your favorite Winchester Ammunition products are eligible for a rebate.

Learn More
The Award Winning Ballistics Calculator

Customize the shooting conditions in the ballistics calculator to replicate ballistics performance in your own shooting or hunting environment.

Learn More (opens in new window)
Winchester Gear Designed for Your Lifestyle

The Winchester Gear online store has the best selection of Winchester shirts, caps, koozies and so much more.

Learn More (opens in new window)
Winchester Repeating Arms – Legendary Firearms

For more than 150 years Winchester Repeating Arms has created some of the most innovative firearms in the industry.

Learn More (opens in new window)