A Nosler Ballistic Tip bullet is a hunting bullet featuring a polymer tip that is color-coded by caliber, designed to initiate rapid expansion upon impact, while a fully-tapered jacket and lead-alloy core allow for controlled expansion and optimal weight retention at various velocities; it also has a heavy jacketed base to prevent deformation during firing and acts as a platform for large-diameter mushrooms, making it a popular choice for medium-sized game.