Hornady Sub-X (Subsonic eXpanding) bullets are engineered to expand reliably at subsonic velocities. The 35 Cal (.357 dia) 250 grain Sub-X combines a lead core with a gilding metal jacket and the patented Flex Tip polymer insert to promote consistent expansion at lower speeds. Long grooves in the jacket and a cannelure provide positive case crimping, making these bullets suitable for semi-automatic firearms and handloaded subsonic applications.
Key Specifications
- The diameter is .357 inches.
- The bullet weight is 250 grains.
- Each box contains 100 bullets.
- The bullet style is a hollow point with an expanding profile.
- The jacket material is brass (gilding metal).
- The core material is lead.
- The bullet tip material is a polymer Flex Tip.
- Cannelure for positive case crimp is present.
- The ballistic coefficient (G1) is 0.265.
- The sectional density is 0.280.
These Sub-X bullets are built for consistent subsonic performance and reliable expansion in reloaded cartridges. Their combination of polymer Flex Tip, grooved gilding metal jacket, and cannelure makes them a practical choice for shooters loading subsonic rounds or seeking dependable terminal performance in compatible platforms.








