FBI Ammunition & Ballistics 2

Question 1

What is 'bullet drop' in external ballistics?

Accepted Answer

The downward deviation of a bullet's path caused by gravity

Answer

The decrease in bullet weight over distance

Answer

The loss of bullet spin stabilization over distance

Answer

The reduction in bullet velocity at extended range

Question 2

Why is 'overpenetration' a critical concern for FBI agents in populated environments?

Accepted Answer

A bullet that exits a target continues traveling and may strike unintended persons

Answer

It causes excessive barrel wear

Answer

It reduces the accuracy of follow-up shots

Answer

It increases the risk of ricochet off hard surfaces

Question 3

What factor most significantly determines a bullet's ability to retain velocity at long range?

Accepted Answer

The bullet's ballistic coefficient (BC)

Answer

The color or coating of the bullet

Answer

The ambient temperature at the time of firing

Answer

The caliber designation of the firearm

Question 4

What is the primary purpose of rifling in a gun barrel?

Accepted Answer

To impart spin on the bullet for gyroscopic stability and improved accuracy

Answer

To increase the barrel's resistance to heat and wear

Answer

To reduce the sound signature of the firearm

Answer

To slow the rate of fire to safe levels

Question 5

Which standard handgun cartridge did the FBI adopt in 2015, replacing the .40 S&W?

Accepted Answer

9mm Luger (9x19mm)

Answer

.45 ACP

Answer

.357 SIG

Answer

10mm Auto

Question 6

What is 'sectional density' in bullet performance?

Accepted Answer

The ratio of bullet weight to its cross-sectional area, indicating penetration potential

Answer

The hardness rating of the bullet's jacket material

Answer

The ratio of bullet length to its diameter

Answer

The surface area of the bullet's base in square inches

Question 7

What is a 'frangible' bullet, and what is its primary law enforcement application?

Accepted Answer

A bullet designed to disintegrate on hard surfaces, reducing ricochet hazards during close-range training

Answer

A bullet that expands in soft tissue to maximize energy transfer

Answer

A bullet with a hollow base for better gas sealing in the bore

Answer

A Teflon-coated bullet designed to defeat soft body armor