Patented Flex Tip(R) technology delivers immediate, reliable expansion: the soft polymer tip compresses on impact to initiate consistent expansion across a wide range of velocities. The one-piece, high-antimony lead core is mechanically locked to the jacket with an InterLock ring, and the specially engineered jacket maximizes weight retention for deep penetration on large or heavy-bodied game.Features Patented Flex Tip(R) (FTX(R)) for dependable expansion at varied velocities One-piece high-antimony lead core for hardened performance InterLock ring mechanically locks core to jacket for superior weight retention Designed for deep penetration and reliable terminal performance on big gameFind these FTX(R) bullets - plus rifles, optics, reloading supplies, parts, and shooting gear - at AR-15 Discounts, your one-stop shop for firearms, hunting ammo, and outdoor equipment.