Lubricants versus Finishes

Published on February 24, 2023
Duration: 2:01

This guide clarifies the critical difference between lubricants and finishes for firearms. Lubricants are essential for metal components to prevent oxidation and polymerization, while finishes are for wood. Running firearms dry can lead to significant issues like corrosion and abrasive wear due to aluminum oxide buildup. The expert recommends liberal lubrication for most rifles to ensure optimal function and longevity.

Quick Summary

Firearm lubricants prevent oxidation and hardening on metal parts, ensuring smooth operation, while finishes are designed to oxidize and harden, typically for wood. Running firearms dry leads to residue buildup, corrosion (like galvanic corrosion between dissimilar metals), and abrasive wear from aluminum oxide, compromising reliability and longevity.

Chapters

  1. 00:00Introduction: Lubricants vs. Finishes
  2. 00:06Defining Lubricants and Finishes
  3. 00:11Properties of Lubricants
  4. 00:17Properties of Finishes
  5. 00:22Correct Application: Metal vs. Wood
  6. 00:29The Dangers of Running Guns Dry
  7. 00:40Residue and Functional Surfaces
  8. 00:45Component Galling and Oxidation
  9. 00:54Understanding Galvanic Corrosion
  10. 00:58Dissimilar Metals and Corrosion
  11. 01:07Real-World Examples of Dry-Run Damage
  12. 01:14Aluminum Oxide and Its Effects
  13. 01:22Aluminum Oxide as an Abrasive
  14. 01:33Expert Opinion: Run Guns Wet

Frequently Asked Questions

What is the primary difference between firearm lubricants and finishes?

Firearm lubricants are designed to prevent oxidation, polymerization, and hardening, ensuring smooth operation of metal parts. Finishes, conversely, are formulated to oxidize, polymerize, and harden, typically used for protection and aesthetics on surfaces like wood.

Why is it bad to run a firearm completely dry?

Running a firearm dry can lead to carbon residue buildup on functional surfaces, causing it to slow down and eventually seize. It also increases the risk of oxidation and wear, as components are not protected by a lubricating layer.

What is galvanic corrosion and how does it affect firearms?

Galvanic corrosion occurs when two dissimilar metals are in contact with an electrolyte (like moisture). In firearms, this can happen between a steel barrel and an aluminum receiver, leading to corrosion, especially around the receiver's head, and potentially causing component failure.

What are the consequences of aluminum oxide buildup in firearms?

Aluminum oxide, formed from the corrosion of aluminum parts, takes up more space than the original aluminum, which can cause components to bind or seize. If there's still motion, the aluminum oxide acts like sandpaper, leading to abrasive wear on parts.

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