Remington Express 243 Winchester Ammo 80 Grain Copper Solid Tipped Boat Tail ammo review offers the following information; Remington Premier 243 Winchester Copper Solid Tipped Rifle Ammunition. While the Copper Solid complies with non-toxic regulations it dispatches big game with lightning authority in any neck of the woods. It delivers extremely deep penetration with nearly 100% weight retention and has a sleek ogive profile with a polymer tip and boat tail base that gives it outstanding flight characteristics. In fact it's one of the finest extended-range lead-free hunting bullets Remington has ever offered due to its extremely high ballistic coefficient. At impact the polymer tip acts as a wedge plowing through a built-in expansion chamber and initiating a mushroom that's consistently 1.8x bullet diameter – creating a large terminal wound channel from close range to the farthest reaches of your shooting ability. For the pinnacle of shot-to-shot consistency these rounds are loaded using our industryleading manufacturing processes and Remington Premier Gold Box components.