GSI GSI Ammunition & Ballistics 2

Question 1

Which propellant type is used in modern centerfire cartridges?

Accepted Answer

Smokeless powder

Answer

Modern centerfire cartridges use smokeless powder, which burns more efficiently and produces less fouling than black powder.

Question 2

What is 'over-penetration' in the context of defensive ammunition?

Accepted Answer

A bullet that passes completely through the target and continues beyond

Answer

Over-penetration occurs when a bullet passes completely through an intended target, posing a risk to bystanders or objects beyond the target.

Question 3

How should ammunition be stored to maintain reliability and safety?

Accepted Answer

In a cool, dry location away from heat sources and moisture

Answer

Ammunition should be stored in a cool, dry environment away from heat and moisture to prevent degradation of the propellant, primer, and case.

Question 4

What is the function of a ballistic coefficient (BC) for a bullet?

Accepted Answer

It describes how efficiently a bullet overcomes air resistance in flight

Answer

A ballistic coefficient is a numerical value describing how well a bullet retains velocity and resists wind drift as it travels through the air.

Question 5

What should a GSI instructor teach students about using mixed or unknown ammunition?

Accepted Answer

Never use mixed, unlabeled, or unknown ammunition as it poses serious safety risks

Answer

Using mixed, unlabeled, or unknown ammunition is dangerous because incorrect caliber or load data can cause catastrophic firearm failure or injury.

(GSI) Gun Safety Instructor Practice Test