Expansion Ratio
Definition
The expanded diameter divided by a specified original diameter. For an asymmetric recovered projectile, maximum and minimum dimensions or another stated convention may be needed. This ratio describes that specimen and is not a universal product value or a direct measure of injury.
Expansion ratio is the recovered expanded diameter divided by a stated original diameter. An asymmetric specimen needs a defined measurement convention, such as maximum and minimum transverse dimensions. A single ratio should not conceal the specimen’s irregular shape or be presented as a universal product value.
Related terms
- Bonded Bullet
- A projectile whose core and jacket are joined at their interface through a bonding process. This differs from a mechanical lock. Actual...
- Bullet Expansion
- An increase in a projectile’s transverse dimensions through deformation during interaction. It differs from fragmentation, which separates material into pieces. Recovered dimensions...
- Bullet Fragmentation
- Break-up of a projectile into multiple pieces during interaction. Construction, orientation, impact conditions and the contacted material affect the outcome. Recovered fragments...
- Core-Jacket Separation
- Separation of a projectile’s core and surrounding jacket into distinct components. It can produce multiple recoveries from one projectile, but their positions...