CFA Action Type & Caliber Classification 3

Question 1

When appraising a firearm marked '9mm Luger,' a CFA should recognize this cartridge as interchangeable with:

Accepted Answer

9mm Parabellum

Answer

9mm Luger and 9mm Parabellum (also written 9x19mm) are the same cartridge, developed by Georg Luger in 1901.

Question 2

A lever-action rifle's action type is primarily distinguished by:

Accepted Answer

A loop lever behind the trigger guard that cycles the action

Answer

Lever-action rifles use a loop lever located behind the trigger guard; pushing it down and forward then returning it cycles the action.

Question 3

In the context of firearm classification, 'caliber' expressed in millimeters refers to:

Accepted Answer

The diameter of the bore measured across the lands

Answer

When expressed in millimeters, caliber refers to the bore diameter measured across the lands (the high points of the rifling).

Question 4

A gas-operated semi-automatic rifle diverts propellant gas to cycle the action. Which component does the gas typically act upon first?

Accepted Answer

A piston or gas key on the bolt carrier

Answer

In gas-operated actions, expanding gas is tapped from the barrel and acts upon a piston or, in direct-impingement systems, a gas key on the bolt carrier to unlock and cycle the action.

Question 5

Which of the following cartridges is classified as a magnum rifle caliber?

Accepted Answer

.300 Winchester Magnum

Answer

.300 Winchester Magnum is a belted magnum cartridge offering significantly higher velocity and energy than standard .30 caliber rounds like the .308 or .30-06.

CFA Practice Test

CFA Practice Test

CFA Action Type & Caliber Classification 3