I'm starting this thread to discuss issues regarding the materials, design and construction of rifle hunting bullets in so far as it relates to lethality, which, for the purposes of the thread, will be defined as the ability of the bullet to penetrate deeply at any impact angle or distance up to 1000 yds to reach vital organs and effect a one shot kill rapidly. Factors to consider are BC, ductility of bullet material, caliber, muzzle velocity, accuracy (<1MOA), weight retention, type of expansion ( petal vs mushrooming vs explosive vs petal shedding).