A great performing 99% copper bullet retains up to 100% or its weight. The valve at the tip of the bullet opens immediately on impact, leading the bullet to expand symmetrically and without shattering. This high tech bullet design gives a maximal shock effect and it works perfectly within terminal velocities of 1640 fps to 3280 fps. The Naturalis is extremenly effective by giving a clean shot and minimizes meat loss. Unique Lapua technology.