JSB Predator Polymag Shorts Premium Pellets. This unique ammunition is manufactured in cooperation with an American partner who holds a patent for this type of projectile. It is a lead pellet into which a polymer tip is pressed with precision processing of all parts and perfectly coaxial pressing guarantees supreme accuracy. The polymer tip ensures good passage through the target and the lead body has sufficient impact energy. Designed to be the most effective and efficient airgun hunting ammunition available.