the sanguinary business 163
percent. Although the musket was a strikingly inefficient killing tool,
when its heavy ball did find a target at anything close to its effective
range, the damage was extensive. A wound profile test of a 0.69-caliber
lead ball (about the same as a Pennsylvannia-Kentucky rifle) shot into 10
percent ordnance gelatin (simulating flesh) at 540 feet per second shows
a surprisingly deep penetration of seventy-three centimeters (twenty
-
nine inches), which is comparable to the penetration of a conical bullet
fired from a modern 0.45 automatic pistol.
2
The large contact surface of a musket ball (almost three-quarters of
an inch in diameter) would have inflicted an extensive area of damage
through what in wound ballistics is known as crushing (the initial
impact), but, unlike the modern bullet, it would not have “yawed”
on penetration. Although the modern military rifle bullet has great
aerodynamic integrity in flight, its delicate balance is literally knocked
for a loop when it hits flesh. It enters the body point forward, but after
traveling for approximately five inches (the distance will vary depending
on the bullet model), it will tumble 180 degrees as its center of mass, the
base, shifts to the front. It may also fragment.
Both of these characteristics, “tumbling” and fragmentation, create
extended areas of damage or, in the euphemism of the ballistics expert, are
extremely “disruptive of tissue.” The entry wound is characteristically
small, but the exit wound large (stellate is the ironically poetical technical
term). By comparison, a large musket ball, because it cannot tumble,
will do most of its damage “up front” through crushing. And assuming
it does not hit bone that will cause the ball to fragment, it creates a
relatively straightforward wound profile. It depends, of course, where
the ball hits. “Elastic” tissue, such as muscle, skin, bowel wall, or lung,
is good at absorbing the kinetic energy of the projectile; tissue in bone,
or the walls of the arteries, or the liver, is another matter altogether.
(A misconception is that high velocity is necessarily more lethal than
low velocity because more kinetic energy is delivered to the target. The
critical factor is where in the body that energy is delivered and how the
projectile behaves on entry.)
A man hit in the stomach or head by a musket ball at full velocity
almost invariably died. (Belly wounds, if not immediately fatal, usually