Bullet design->
Bullet refers to the projectiles which exit the barrel of the gun when fired.
Bullets vary in shape and comparison.
There exist hundreds of different types of bullets.
Most types are variations on three main shapes and three basic compositions.
Round nose->
Maximum penetration
Cheapest shape to manufacture
Easily loads into chambers
Hollow point->
Spreads or mushrooms on impact
Causes additional damage to target
Inhibits penetration
Wadcutter->
Used exclusively as a practice load
Minimizes penetration
Rips a hole in the target paper which is visible by the shooter.
Three basic compositions of bullets->
Lead
½ jacketed
Jacketed (full metal jacket)
Lead->
Cheap
Dense
Soft
Easy to mold
½ jacketed->
A lead bullet coated with copper halfway up the exposed portion of the bullet.
Used primarily for hollow points
Copper improves exit velocity
Lead promotes mushrooming
Jacketed->A lead bullet completely coated in copper.Copper improves exits velocity.Used to hold the shape of the bullet to maximize penetration.Matching procedure-> Fire bullets from a suspected weapon.
With the aid of a comparison microscope, compare these "test fires" to the suspected bullets.
Striations must be identical for a positive match.
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