The Laupa .300 Winchester Magnum 170 grain Naturalis Solid is perfectly capable of tackling medium sized game. The Naturalis bullet is lead-free, composed of 99% copper yet retain the stopping power of a traditional lead bullet. Naturalis rounds will begin to expand immediately on impact staring at the valve at the tip of the bullet, followed by further expansion without breaking apart. Their unique design ensures a clean shot without the risk of meat loss.