What is a crucial identifying feature of bullet entry wounds?

The crucial identifying feature of bullet entry wounds is their shape. Bullet entry wounds are typically characterized by a circular or oval shape due to the conical nature of the bullet as it penetrates the skin. This distinctive shape can help forensic experts determine the type of weapon used, the angle of entry, and other critical factors that may be relevant in an investigation.

In contrast, while size can vary depending on the caliber of the bullet and the distance from which it was fired, it is not as consistently identifiable for forensic purposes as shape. Color and texture are not reliable indicators of bullet entry wounds; the color of the wound can change due to various factors such as healing and the presence of blood, while texture can be influenced by surrounding skin conditions or injury patterns unrelated to the bullet itself. Understanding the significance of the wound's shape allows forensic professionals to gather pertinent information about the circumstances surrounding the shooting incident.