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Study Guide: Firearm Cartridge Classifications and Terminology

Cheat Sheet:
Firearm Cartridge Classifications and Terminology Study Guide

Cartridge Fundamentals and Ignition Systems

Ignition in a rimmed cartridge is achieved by crushing the priming compound located within the rim of the case.

Answer: False

Explanation: This statement is incorrect. Rimmed cartridges utilize a primer located in the center of the case head, which is struck by the firearm's firing pin. Rimfire cartridges, conversely, have their priming compound integrated into the rim, which is then crushed to initiate ignition.

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Centerfire ammunition uses a primer located within the rim for ignition.

Answer: False

Explanation: Centerfire ammunition is characterized by a primer located in the center of the case head, not within the rim. Rimfire ammunition utilizes a primer integrated into the rim.

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How does the ignition process of a rimfire cartridge differ fundamentally from a rimmed cartridge?

Answer: Rimfire ignites by crushing the rim containing priming compound, while rimmed uses a central primer struck by the firing pin.

Explanation: The fundamental difference lies in the location and method of ignition. Rimfire cartridges contain priming compound within the rim itself, which is crushed by the firing pin. Rimmed cartridges, conversely, feature a primer centrally located on the case head, which is struck by the firing pin.

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Centerfire ammunition is distinguished by:

Answer: The primer being located in the center of the case head.

Explanation: Centerfire ammunition is defined by the placement of its primer in the central portion of the case head, which is struck by the firing pin to initiate ignition.

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Cartridge Design Features and Terminology

Shotgun shells are categorized by their caliber, with larger numbers indicating larger diameters.

Answer: False

Explanation: Shotgun shells are categorized by gauge, not caliber in the same sense as rifle or pistol cartridges. The gauge number is inversely related to the barrel's internal diameter; a smaller gauge number signifies a larger diameter.

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A 'wildcat cartridge' is a standard cartridge produced by major firearm manufacturers.

Answer: False

Explanation: A wildcat cartridge is, by definition, a custom-designed or modified cartridge that is not mass-produced by major manufacturers. It is typically developed by enthusiasts or gunsmiths.

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A 'rebated rim cartridge' has a rim that is larger in diameter than the main case body.

Answer: False

Explanation: A rebated rim cartridge is defined by a rim whose diameter is smaller than the main body of the cartridge case, not larger.

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The 'Rim (firearms)' concept is unrelated to cartridge headspacing.

Answer: False

Explanation: The rim of a cartridge case is critically related to headspacing, as it often provides the surface against which the cartridge is seated in the chamber.

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The designation 'R' in a cartridge name like 7.62x54mmR signifies a rimless design.

Answer: False

Explanation: The designation 'R' in cartridge nomenclature typically indicates a 'rimmed' case, not a rimless design.

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What is the primary function of the rim on a rimmed cartridge?

Answer: To provide a surface for the extractor to grip and aid in headspacing.

Explanation: The rim of a rimmed cartridge serves two critical functions: it provides a surface for the firearm's extractor to engage for reliable extraction, and it defines the cartridge's position within the chamber (headspacing).

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What does the gauge number signify in the context of shotgun cartridges?

Answer: A measurement inversely related to the internal diameter of the barrel.

Explanation: The gauge number for shotgun shells is an inverse measure of the barrel's internal diameter. A lower gauge number, such as 10-gauge, indicates a wider bore diameter compared to a higher gauge number, like 20-gauge.

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What does the term 'wildcat cartridge' refer to?

Answer: A cartridge that has been custom-designed or modified from an existing one.

Explanation: A wildcat cartridge is a firearm cartridge that has been custom-designed or modified from an existing one, often to achieve improved performance characteristics. These cartridges are typically not mass-produced by major manufacturers.

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Which of the following is a characteristic of a 'rebated rim cartridge'?

Answer: The rim's diameter is smaller than the main body of the cartridge case.

Explanation: A rebated rim cartridge is defined by a rim whose diameter is reduced, becoming smaller than the main diameter of the cartridge case body. This design feature impacts the firearm's extraction and headspacing mechanisms.

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The definition of a 'bore' in shotgun cartridges refers to:

Answer: The internal diameter of the shotgun barrel.

Explanation: In the context of shotgun cartridges, the term 'bore' refers to the internal diameter of the shotgun barrel. The gauge number is inversely proportional to this diameter.

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Cartridge Classifications and Firearm Applications

'Intermediate' cartridges bridge the power gap between handgun rounds and full-power rifle cartridges.

Answer: True

Explanation: Intermediate cartridges are indeed designed to offer greater power and range than typical handgun rounds, while falling short of the performance characteristics of full-power rifle cartridges.

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'Fully powered' cartridges are designed for lower velocity and energy compared to handgun rounds.

Answer: False

Explanation: Conversely, 'Fully powered' cartridges are characterized by significantly higher velocity and energy levels compared to handgun rounds, enabling greater range and terminal ballistics.

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Autocannons are typically small, single-shot weapons.

Answer: False

Explanation: Autocannons are automatic cannons, generally characterized by their high rate of fire and use of larger caliber ammunition, distinguishing them from small, single-shot weapons.

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Artillery cartridges are designed for short-range, tactical engagements.

Answer: False

Explanation: Artillery cartridges are designed for long-range bombardment and high-impact engagements, not for short-range, tactical applications.

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The 'Flare and Riot' category includes cartridges designed for training simulations.

Answer: False

Explanation: The 'Flare and Riot' category encompasses cartridges intended for signaling, illumination, and crowd control, not typically for training simulations which usually employ blank or specialized training rounds.

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Blank cartridges produce a projectile that travels significant distances.

Answer: False

Explanation: Blank cartridges are specifically designed to expel propellant and create sound and muzzle flash without launching a projectile, thus they do not travel significant distances.

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Cartridges listed under the 'Handgun and Carbine' section are primarily designed for:

Answer: Smaller firearms like pistols, revolvers, and carbines.

Explanation: The 'Handgun and Carbine' classification encompasses cartridges intended for use in firearms such as pistols, revolvers, and carbines, which are generally smaller and designed for personal defense or sporting purposes.

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Which category includes rimmed cartridges that are more powerful than typical handgun rounds but less powerful than full-sized rifle cartridges?

Answer: Intermediate

Explanation: The 'Intermediate' classification specifically denotes cartridges that occupy a performance niche between handgun rounds and full-power rifle cartridges, offering enhanced capabilities over handgun ammunition.

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What is the primary purpose of cartridges found in the 'Flare and Riot' category?

Answer: Signaling, illumination, and crowd control.

Explanation: Cartridges within the 'Flare and Riot' classification are engineered for specialized applications such as deploying flares for visual signaling or illumination, and for riot control purposes, often utilizing non-lethal projectiles.

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Blank cartridges are designed to:

Answer: Produce sound and muzzle flash without expelling a projectile.

Explanation: Blank cartridges are specifically engineered to generate sound and visual effects, such as muzzle flash, without launching a projectile. Their utility lies in simulating gunfire for training, ceremonies, or theatrical performances.

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Which cartridge category is intended for use in heavy artillery pieces like field guns and naval cannons?

Answer: Artillery

Explanation: The 'Artillery' classification specifically designates cartridges designed for large-caliber ordnance such as field guns and naval cannons, intended for heavy bombardment.

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What is the primary use of blank cartridges?

Answer: Simulating gunfire for training, ceremonies, or theatre.

Explanation: Blank cartridges are specifically designed to produce auditory and visual effects, such as sound and muzzle flash, without launching a projectile. Their primary applications include firearms training, ceremonial events, and theatrical productions.

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Which section lists cartridges designed for automatic cannons mounted on vehicles or aircraft?

Answer: Autocannon

Explanation: The 'Autocannon' section specifically enumerates cartridges designed for automatic cannons, which are typically mounted on vehicles or aircraft and fire projectiles at a high rate.

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Specific Cartridge Examples and Their Roles

The .38 Special cartridge is typically chambered in bolt-action sniper rifles.

Answer: False

Explanation: The .38 Special is a rimmed cartridge primarily designed for revolvers and some carbines, not typically for bolt-action sniper rifles, which usually employ more powerful, longer-range cartridges.

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The .410 bore is the largest caliber listed in the shotgun category.

Answer: False

Explanation: The .410 bore is one of the smallest standard shotgun gauges, not the largest. Larger gauges like 10, 12, and 16 are common, indicating larger bore diameters.

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The .45-60 Winchester is an example of a 'Fully powered' rifle cartridge.

Answer: False

Explanation: The .45-60 Winchester is typically classified as an 'Intermediate' cartridge, designed for lever-action rifles, rather than a 'Fully powered' rifle cartridge which denotes higher velocity and energy.

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The 7.62x54mmR cartridge is a rimless design commonly used in modern assault rifles.

Answer: False

Explanation: The designation 'R' in 7.62x54mmR signifies a rimmed cartridge, not rimless. While it has seen extensive military service, its primary applications are in bolt-action rifles and machine guns, rather than typical modern assault rifles.

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The 37x145mmR is an example of a cartridge used in artillery pieces.

Answer: False

Explanation: The 37x145mmR is listed under the 'Autocannon' category, not 'Artillery'. Artillery cartridges are generally of significantly larger caliber and intended for heavier ordnance.

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The .22 Hornet is primarily used in heavy machine guns.

Answer: False

Explanation: The .22 Hornet is a small-caliber, relatively low-powered cartridge primarily suited for varmint hunting rifles and some handguns, not heavy machine guns.

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The .44 Magnum is known for its low recoil and suitability for beginners.

Answer: False

Explanation: The .44 Magnum is recognized as a powerful handgun cartridge with significant recoil, making it generally unsuitable for absolute beginners or those sensitive to recoil.

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The .45-70 Government cartridge is primarily used in small caliber pistols.

Answer: False

Explanation: The .45-70 Government is a large-caliber rifle cartridge, historically used in military long arms and still popular for hunting large game, not for small caliber pistols.

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The .303 British served as a primary military rifle cartridge for the United States.

Answer: False

Explanation: The .303 British was the standard military rifle cartridge for the British Empire and Commonwealth, not the United States, which primarily used cartridges like the .30-06 Springfield.

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The .410 bore is a type of rifle cartridge.

Answer: False

Explanation: The .410 bore is classified as a shotgun cartridge, distinguished by its gauge measurement and use in smoothbore barrels, rather than being a rifle cartridge.

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Which of the following is an example of a rimmed cartridge found in the 'Handgun and Carbine' category?

Answer: .38 Special

Explanation: The .38 Special is explicitly listed as a rimmed cartridge commonly found within the 'Handgun and Carbine' classification. While 7.62x54mmR, .30-30 Winchester, and .45-70 Government are rimmed, they are typically categorized under rifle or higher-power classifications.

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The .30-30 Winchester cartridge is noted for its popularity in:

Answer: Cowboy action shooting and hunting deer with lever-action rifles.

Explanation: The .30-30 Winchester is a historically significant and widely popular rimmed cartridge, particularly favored for its use in lever-action rifles for deer hunting and in cowboy action shooting.

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The .45 Colt cartridge is noted for its:

Answer: Historical significance and enduring popularity in revolvers and carbines.

Explanation: The .45 Colt, also known as .45 Long Colt, is a historically significant rimmed cartridge renowned for its sustained popularity in revolvers and carbines, frequently utilized in cowboy action shooting and hunting.

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What is the largest caliber rimmed cartridge listed under the 'Artillery' section?

Answer: 113x640–645mmR

Explanation: The largest caliber rimmed cartridge specified within the 'Artillery' category is the 113x640–645mmR, indicating a substantial diameter and case length suitable for heavy artillery systems.

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Which of the following cartridges is listed under the 'Fully powered' category?

Answer: .30-30 Winchester

Explanation: The .30-30 Winchester is classified under the 'Fully powered' category, denoting its status as a high-performance rifle cartridge suitable for hunting and other demanding applications.

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The .410 bore cartridge belongs to which category?

Answer: Shotgun

Explanation: The .410 bore is categorized as a shotgun cartridge, recognized for its relatively small bore diameter within the shotgun gauge system.

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The .44 Magnum cartridge is described as:

Answer: A powerful handgun cartridge suitable for hunting large game.

Explanation: The .44 Magnum is characterized as a high-velocity, high-energy handgun cartridge, recognized for its efficacy in hunting large game and its potent self-defense capabilities.

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The .303 British cartridge served as the standard military rifle cartridge for:

Answer: The British Empire and Commonwealth.

Explanation: The .303 British was the standard military rifle cartridge for the British Empire and Commonwealth for an extended period, playing a significant role in numerous conflicts.

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The .22 Hornet cartridge is mentioned in which category?

Answer: Handgun and Carbine

Explanation: The .22 Hornet, a rimmed cartridge known for its accuracy in varmint hunting, is listed within the 'Handgun and Carbine' classification.

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Which of the following is NOT listed as an example of a rimmed cartridge in the 'Handgun and Carbine' section?

Answer: 7.62x54mmR

Explanation: The 7.62x54mmR cartridge, although rimmed, is classified under 'Fully powered' rifle cartridges and is not listed as an example within the 'Handgun and Carbine' section. The .357 Magnum, .44-40 Winchester, and .44 Colt are explicitly cited as examples in that category.

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Ancillary Information and Bibliographic Data

The book 'Wound Ballistics: Basics and Applications' was published in the early 2000s.

Answer: False

Explanation: The cited book, 'Wound Ballistics: Basics and Applications' by Beat P. Kneubuehl, was published on June 14, 2011, which is in the 2010s, not the early 2000s.

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The 'See also' section includes 'Centerfire ammunition' as a related topic.

Answer: True

Explanation: The 'See also' section of the source material does indeed list 'Centerfire ammunition' among other related topics, indicating a connection for further study.

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The 'Firearm cartridge calibers' navbox organizes cartridges by their manufacturer.

Answer: False

Explanation: The 'Firearm cartridge calibers' navigational box primarily organizes cartridges by their approximate millimeter diameter, distinguishing between rifle and cannon calibers, rather than by manufacturer.

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The date 'December 2024' associated with the single source notice indicates the article's publication date.

Answer: False

Explanation: The date associated with a single source notice typically indicates when the notice was last updated or when the article was flagged for this characteristic, not the article's original publication date.

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Which of the following is the ISBN for the cited reference book?

Answer: 978-3-642-20356-5

Explanation: The International Standard Book Number (ISBN) for the cited reference, 'Wound Ballistics: Basics and Applications,' is 978-3-642-20356-5.

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What does the 'ambox-one_source' template indicate about the article?

Answer: It relies on a single primary source for its content.

Explanation: The 'ambox-one_source' template signifies that the article's content is predominantly or exclusively derived from a single source, suggesting a need for additional citations to enhance reliability and comprehensiveness.

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The 'Firearm cartridge calibers' navbox organizes cannon calibers by:

Answer: Approximate millimeter diameter.

Explanation: Within the 'Firearm cartridge calibers' navigational box, cannon calibers are systematically organized according to their approximate millimeter diameter, facilitating comparison and identification based on size.

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What does the 'ambox-one_source' notice suggest about the article's sourcing?

Answer: It relies on a single primary source.

Explanation: The 'ambox-one_source' notice indicates that the article's content is primarily derived from a single source, suggesting a need for additional citations to enhance its reliability and comprehensiveness.

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