Hornady HAP (Hornady Action Pistol) bullets in 10mm Auto, .400 diameter, 180 grain (Hornady part no. 400421), take Hornady’s legendary XTP bullet profile and refine it into a dedicated competition projectile. Where XTP bullets use folds and a cannelure to aid controlled expansion and terminal performance, HAP bullets drop those features entirely, leaving a sleek, balanced projectile with a protected nose built purely for consistent, reliable feeding in semi-automatic pistols on the competition line.

Key Specifications

• The bullet is chambered for 10mm Auto, at .400-inch diameter.
• The bullet weighs 180 grains, in Hornady’s HAP (Hornady Action Pistol) line.
• Bullets ship 500 per box.
• The hollow-point profile is derived from the XTP design.
• Unlike XTP, the HAP profile drops the folds and cannelure used for controlled expansion, for a sleeker competition shape.
• A protected nose aids consistent, reliable feeding in semi-automatic pistols.
• The design is built specifically for competition use rather than defensive terminal performance.
• The bullet is sleek and balanced, refined from the base XTP shape into a purpose-built match projectile.
• Hornady modeled this bullet after its legendary XTP platform before removing the expansion-oriented features.

Frequently Asked Questions

How is HAP different from Hornady XTP? HAP removes the folds and cannelure used on XTP bullets for controlled expansion, leaving a sleeker, balanced profile built specifically for competition feeding reliability.

How many bullets are in a box? This box contains 500 Hornady HAP 180-grain 10mm Auto bullets.

Buy Hornady HAP 10mm Auto 180gr Bullets

Order Hornady HAP 180-grain 10mm Auto bullets from Hornady‘s reloading bullets lineup — ships fast from our Lubbock, TX gun shop, direct to your reloading bench.