HORNADY 3503 SUB-X 35 CAL .357 250 GRAIN 100 CNT

Hornady Sub-X (Subsonic eXpanding) bullets are a purpose-built reloading component designed for shooters and hunters who want dependable terminal expansion at subsonic velocities, and the 35 Cal .357 diameter 250 grain Sub-X (3503) delivers exactly that in a 100-count box for 350 Legend and compatible 35-caliber cartridges.

Key Features

• Manufacturer Part Number: 3503
• Caliber: 35 Cal, .357 diameter
• Bullet Weight: 250 grains
• Quantity: 100 bullets per box
• Bullet Style: Polymer Tip, Flex Tip hollow point
• Core Construction: Lead core with gilding metal jacket
• Cannelure: Yes, for positive case crimp
• G1 Ballistic Coefficient: .265
• Compatible Cartridges: 350 Legend and other 35-caliber cartridges using .357 diameter bullets

Special Features

• Patented Flex Tip insert sits inside the hollow point cavity and initiates reliable expansion at velocities as low as 900 fps, making this bullet effective in subsonic handloads where standard hollow points often fail to open.
• Long grooves in the gilding metal jacket work with the flat profile and Flex Tip insert to drive consistent, controlled expansion across a wide range of impact velocities.
• Terminal performance meets or exceeds FBI Protocol terminal ballistics test requirements, setting a measurable standard for penetration and expansion that many reloaders use to evaluate hunting and defensive loads.
• The cannelured jacket allows a firm, consistent case crimp, which prevents bullet setback during feeding in semiautomatic platforms.
• Engineered to fit, feed, and function reliably in a wide variety of firearms including gas-operated semiautomatic rifles, not just bolt guns or single shots.

Practical Benefits

• Handloaders running suppressed 350 Legend rifles get a component that keeps velocity under the sound barrier while still delivering the terminal performance needed for deer-sized game at hunting distances.
• Competitive shooters and range shooters building quiet subsonic loads benefit from a bullet that cycles reliably in gas guns without tuning tricks or special magazines.
• Because the Flex Tip prevents deformation during handling and feeding, your loaded rounds stay consistent from the first cartridge in the magazine to the last.
• The 100-count pack gives you enough bullets to develop and confirm a subsonic load and still have components left for hunting season without ordering multiple boxes.
• Whether you are loading for a suppressed hunting setup, a quiet training day, or a dedicated subsonic build, your handloads perform with a level of terminal consistency that standard cup-and-core designs at these speeds simply cannot match.

The Hornady Sub-X 35 Cal .357 250 Grain (3503) is a proven platform for the handloader building high-performance subsonic 350 Legend rifle loads for hunting and suppressed shooting applications.