Float Pilot
Member
Just has a pinhole sized opening at the front end because the case is rolled back to front instead of front to back like a conventional FMJ round.
Plus the slight hollow cavity in the front of the projectile is used to move the CG (center of gravity) to the rear, thus enhancing stability and the long range ballistic co-efficient.
As Horse Soldier points out... it was not meant to, nor does it act like, a conventional hollow point round.