Hornady NTX bullets and Varmint Express ammunition provide peerless performance from a bullet with an alternative core material that delivers accuracy, performance and Hornady quality for use in areas with restrictions on the use of lead. Hornady has made lead core bullets since 1949. Lead is, and always will be an excellent core material that provides density and hard hitting energy to a vast array of bullets. However, there are regulations in some areas that restrict the use of lead in bullets. The NTX is a phenomenal choice when an alternative core bullet is required.