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Bonded Bullet

Definition

A projectile whose core and jacket are joined at their interface through a bonding process. This differs from a mechanical lock. Actual construction must be established from examination and reliable product information; retained mass alone does not demonstrate bonding or guarantee future performance.

Manufacturer documentation distinguishes construction mechanisms: Speer describes a bonded Uni-Cor jacket/core interface, while Hornady describes the mechanical InterLock band in Critical Duty FlexLock bullets. These are different arrangements, even when both are designed to retain core material.

Related terms

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...
Expansion Ratio
The expanded diameter divided by a specified original diameter. For an asymmetric recovered projectile, maximum and minimum dimensions or another stated convention...

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