This projectile was designed specifically for the 400 Legend. Thanks to its large open-nose design fluid can immediately enter the hollow cavity allowing the bullet to expand rapidly. Combined with its six-petal design this bullet expands reliably dang near subsonic velocities making it a legitimate 300-yard cartridge.

Note on absence on TSX grooves: When fired in the .400 Legend the TSX grooves do not have a significant effect on fouling pressure or accuracy. For this TSX bullet Barnes intentionally omitted the grooves.