Remington Core-Lokt Centerfire Rifle Ammunition has earned an excellent reputation among deer hunters. Remington has led deer ammunition sales for six decades with this particular bullet design. Core-Lokt bullets were the first controlled-expansion ones and are still one of the top options in terms of effectiveness. There is a solid lead core covered by a copper jacket which is progressively tapered allowing for weight retention and controlled expansion making the bullets perfect for shooting game. There are also soft point (pointed and not) versions available depending on your needs.