Wound ballistics is the study of phenomena that arises when a
projectile strikes and penetrates a human or animal (1). Due to
variability in biological wounds from projectiles, computational
predictions are increasingly playing a role in drawing conclusions.
One important feature of wound ballistics is “backspatter,”
a term used to describe any biological material ejected from a
gunshot entrance in the opposite direction to the line of fire
(2,3). However, although it is well-documented, backspatter
mechanics is not fully understood and involves multiple factors
including transfer of kinetic energy, rapid expansion of gas, and
high deformation of biological material. A description of possible
physical components of soft tissue wounding leading to
backspatter has recently been discussed in (4).