How do broadheads expand upon impact?

Broadheads are designed with blades that expand upon impact to maximize their effectiveness in cutting through the target. When the broadhead strikes a target, the blades open up, revealing sharper cutting edges that create wider wound channels. This design allows for greater blood loss, which is crucial for tracking game. The expansion mechanism is engineered to ensure that once the broadhead penetrates the target, its cutting potential is significantly increased due to the wider opening created by the blades.

Other methods of construction, like snapping back or breaking apart, do not enhance the cutting capability as effectively as the expanding blades. Additionally, remaining unchanged would not contribute to a more lethal impact, as the purpose of a broadhead is to inflict maximum damage upon penetration. Hence, the feature of blades expanding upon impact is what distinguishes modern broadheads in hunting scenarios.