Barnes TSX bullets are a solid-copper, expanding projectile designed for consistent terminal performance and high retained weight. This listing covers the 9.3mm (.366″) 286-grain flat-base variant supplied in a 50-count box. The TSX profile promotes uniform expansion while retaining mass, and the manufacturer notes seating depth can influence accuracy. These bullets are commonly used by reloaders assembling big-game hunting and precision cartridges where controlled expansion and weight retention are priorities.
Key Specifications
- The box contains 50 bullets.
- The bullet weight is 286 grains.
- The caliber is 9.3mm.
- The diameter measures 0.366 inches.
- The bullet type is Flat Base (FB).
- The design is TSX solid copper construction.
- The sectional density is 0.305.
- The ballistic coefficient (G1) is 0.411.
- The manufacturer recommends seating from 0.03 to 0.07 inches for best accuracy depending on rifle.
- The listed shipping weight is 2.2.
For reloaders who prioritize consistent expansion and high weight retention, these Barnes TSX 9.3mm 286-grain flat-base bullets deliver a reliable platform for building effective big-game and precision loads. Their solid-copper TSX profile and documented seating recommendation make them a practical choice for shooters focused on repeatable ballistic performance and dependable terminal behavior.









