Forgive me if this is a "firearm 101" question.
You always see the t.v. shows where the crime lab is trying to match a recovered bullet to the specific barrel of a specific weapon.
Since the rifling is performed by a machine at the factory that manufactured the barrel, why aren't all the barrels, and the bullets that travel through them, identical? What is so unique about a bullet that's traveled through a given barrel? How is that possible?
Thank you,
Ed
You always see the t.v. shows where the crime lab is trying to match a recovered bullet to the specific barrel of a specific weapon.
Since the rifling is performed by a machine at the factory that manufactured the barrel, why aren't all the barrels, and the bullets that travel through them, identical? What is so unique about a bullet that's traveled through a given barrel? How is that possible?
Thank you,
Ed