Firearm Basics: Cartridge Case Material

Published on April 13, 2020
Duration: 2:21

This video from NRA Publications explains the four common materials used for cartridge cases: brass, steel, aluminum, and nickel-plated brass. It details the economic and practical reasons for using each material, their visual characteristics, and why understanding these differences is important for firearm owners. The instruction is geared towards beginners seeking foundational knowledge about ammunition.

Quick Summary

The four common materials for firearm cartridge cases are brass, steel, aluminum, and nickel-plated brass. Brass is favored for its formability and corrosion resistance. Steel lowers costs but needs a protective coating. Aluminum is a cheaper alternative, while nickel-plated brass offers tarnish resistance for frequently handled ammunition.

Chapters

  1. 00:32Introduction to Cartridge Case Materials
  2. 00:41Common Case Materials: Brass, Steel, Aluminum, Nickel-Plated Brass
  3. 00:55Properties of Brass Cases
  4. 01:06Properties of Steel Cases
  5. 01:14Properties of Aluminum Cases
  6. 01:22Properties of Nickel-Plated Brass Cases
  7. 01:45Identifying Case Materials by Color
  8. 01:56Visual Identification: Brass, Steel, Aluminum, Nickel-Plated
  9. 02:09Conclusion and Further Learning

Frequently Asked Questions

What are the four common materials used for firearm cartridge cases?

The four most common materials for firearm cartridge cases are brass, steel, aluminum, and nickel-plated brass. Each material is chosen for specific economic and practical reasons related to its properties and cost.

Why is brass the most common material for cartridge cases?

Brass is the most common cartridge case material because it is easily formed into the required shapes, resists corrosion effectively, and is softer than steel, which leads to less wear and tear on the firearm's mechanism.

How can you visually distinguish between different cartridge case materials?

You can often tell case materials by their color: brass cases are straw or goldish, steel cases are dark grey or greenish, aluminum cases are light grey, and nickel-plated cases are silver.

What are the advantages of nickel-plated brass cartridge cases?

Nickel-plated brass cases are more expensive but do not tarnish. This makes them ideal for ammunition that might be handled frequently, such as for high-end hunting or self-defense, before it is fired.

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