A sabot includes a base and a plurality of elongated petals extending therefrom. Each petal includes an elongated sidewall portion having an arched interior surface and an arched exterior surface each extending between a first end and an opposing second end. A floor portion inwardly projects from the interior surface of the sidewall portion at the second end thereof so as to form an inside angle between the interior surface of the sidewall portion and an interior surface of the floor portion, each floor portion being pivotally connected to the base so that the plurality of petals can selectively move between a collapsed position wherein the sidewall portions combine to formal a substantially cylindrical sidewall that bounds a chamber and an expanded position wherein the sidewall portions radially outwardly project from the base.