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Action Type & Caliber Classification Flashcards

7 cards from real CFA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Action Type & Caliber Classification flashcards as text

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

    Answer: 9mm Parabellum

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

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

    Answer: A loop lever behind the trigger guard that cycles the action

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

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

    Answer: The diameter of the bore measured across the lands

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

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

    Answer: A piston or gas key on the bolt carrier

    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.

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

    Answer: .300 Winchester Magnum

    .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.

  6. A CFA encounters a shotgun labeled '20 gauge.' Compared to a 12-gauge shotgun, the 20-gauge barrel has a:

    Answer: Smaller bore diameter

    20-gauge shotguns have a smaller bore diameter than 12-gauge; higher gauge numbers indicate smaller bore sizes in shotgun classification.

  7. An 'open-bolt' firearm fires from the open-bolt position, meaning:

    Answer: The bolt is held rearward by the sear and travels forward to chamber and fire simultaneously

    Open-bolt firearms hold the bolt rearward when cocked; pulling the trigger releases it to travel forward, chambering and firing the round in one motion.