Hornady SUB-X 30 Cal 175gr FTX Bullets (Box of 100)

Hornady SUB-X 30 caliber 175gr FTX bullets are purpose-built for subsonic rifle loads, engineered to expand reliably at velocities well below the speed of sound. If you're loading suppressed rifle ammunition or working with low-velocity cartridge handloads, these bullets solve the core challenge: most conventional projectiles simply won't expand when driven at subsonic speeds. Hornady's Flex Tip technology—a patented insert in the hollowpoint cavity—initiates controlled expansion even at velocities as low as 900 fps, ensuring your subsonic loads perform predictably downrange.

Built with a lead core and gilding metal jacket, the SUB-X features long grooves and a distinctly flat profile that work together to promote consistent expansion. The cannelured jacket accepts a positive crimp, making these rounds reliable in semi-automatic platforms where consistent feeding matters. Whether you're running a suppressed .300 Blackout, .308, or another 30-caliber subsonic load, these bullets meet FBI protocol terminal ballistic standards—real-world terminal performance verification, not marketing promises.

This box contains 100 bullets, the standard reloading quantity for serious handloaders. If subsonic precision shooting, suppressed hunting, or specialty low-velocity ammunition is on your bench, SUB-X rounds deliver the expansion and consistency you need when commercial subsonic ammo won't cut it or doesn't exist in your exact caliber and load specification.

Key Features

• Expands reliably at subsonic velocities (as low as 900 fps)
• Patented Flex Tip technology for consistent hollowpoint performance
• Cannelured jacket for positive case crimp in semi-automatic firearms
• Meets FBI terminal ballistic test protocols
• Designed for consistent feeding and function across gas-system and other rifle platforms
• 100-count box for reloading

Specifications

Caliber	30 Caliber (.308)
Weight	175 grains
Bullet Type	FTX (Flex Tip eXpanding)
Core Material	Lead
Jacket Material	Gilding metal
Cannelured	Yes
Count per Box	100

Frequently Asked Questions

What rifles and calibers can I use these bullets in?

SUB-X 30 caliber 175gr bullets are designed for 30-caliber rifle cartridges and are engineered to feed and function reliably in semi-automatic rifles, including gas-system firearms. They're commonly used in subsonic loads like .300 Blackout, but can be loaded in any .308-diameter cartridge. Always consult load data specific to your caliber and rifle before reloading.

Will these bullets expand at subsonic speeds?

Yes. Hornady's Flex Tip insert is specifically designed to initiate expansion at velocities as low as 900 fps, making SUB-X bullets ideal for subsonic ammunition where traditional hollow-points often fail to expand.

Why are these bullets cannelured?

The cannelure provides a crimp groove that allows you to crimp the case neck around the bullet after seating. This is particularly important for semi-automatic platforms where consistent feeding and cycling demand tight ammunition tolerances.

Do these bullets meet any ballistic standards?

Yes. SUB-X bullets meet FBI protocol terminal ballistic test requirements, meaning they've been verified for consistent expansion and penetration performance under controlled conditions.