Crosman .177 Fast Flight Penetrators 5.4gr Lead Free Pellets, 150ct. Powershot ammunition from Crosman is a great alternative to traditional lead pellets. The outstanding ballistic properties enhance long-range shooting for hunters, target and recreational shooters. These belted, pointed pellets hold their shape on impact for better penetration. At 5.4 grains, the Fast Flight Penetrators deliver screaming velocities and maximum penetration.