The Speer Gold Dot .40 S&W/10mm 155gr handgun bullet (brand part no. 4400) is a .400-inch GDHP hollow point built with Speer’s Uni-Cor technology, which bonds the core firmly to the jacket so the bullet holds together through expansion. Speer, a manufacturer with roots dating back to World War II, built this bullet to meet strict law enforcement standards for performance and dependability. At 155 grains, this is a lighter, faster-moving option shared across both .40 S&W and 10mm Auto handloads. It ships 100 to a box.

Key Specifications

• .40 S&W/10mm, .400-inch bullet diameter compatible with both cartridges.
• 155-grain bullet weight for a fast, flat-shooting .40/10mm load.
• 100 bullets per box for a full handloading batch.
• Gold Dot Hollow Point (GDHP) design for controlled, reliable expansion.
• Uni-Cor bonding technology fuses the core firmly to the jacket, virtually eliminating bullet failure.
• Meets strict law enforcement performance standards for maximum expansion and weight retention.
• Ships at approximately 2.3 lb per box.

Frequently Asked Questions

Does this bullet work in both .40 S&W and 10mm Auto? Yes, it’s a .400-inch diameter bullet shared across both cartridges.

What is Uni-Cor technology? It’s Speer’s process for bonding the bullet’s core firmly to its jacket, which virtually eliminates bullet failure during expansion.

Buy the Speer Gold Dot .40 S&W/10mm 155gr Handgun Bullets

Order this box of 100 Speer Gold Dot .40/10mm projectiles from our reloading bullets selection to build maximum-reliability defensive handloads. Order from our Lubbock, Texas gun shop for fast, insured shipping nationwide.