Patented Flex Tip Bullet Technology: Upon impact, the soft tip compresses into the bullet, initiating immediate expansion across a wide range of velocities. Safe to shoot in tubular magazines as well as any other firearm; Interlock Ring: The one-piece, high antimony lead core of the FTX is mechanically locked to the jacket with an InterLock ring; Ballistically Efficient Secant Ogive: Pioneered by Hornady, the secant ogive profile delivers stability, flat trajectories and amazing accuracy; Specially Engineered Jacket: The heavy jacket over the shank of the bullet combined with their proven InterLock design controls expansion and enhances accuracy