.40s not quite cutting it? These .86g bbs are the ultimate heavy weight BB. Perfectly polished, spherical and consistent, these rounds are able to reach out to 400+ ft with a properly installed hopup. Please note that at a very minimum, an R-Hop or flat hop will be required to get sufficient backspin on these rounds. An ER-Hop is ideal, but even with a standard rhop, you will see an incredible increase in consistency shot to shot, as the outdoor elements have virtually no impact on the flight patterns at the distance these would fly.