Barrel erosion is the wearing away of a barrel bore and/or chamber surface through normal use by non-chemical means.
Like all things, barrels naturally wear out; the heat, friction, and pressure exerted on it over time wears away the internal surfaces.
related:
Footnotes / Sources:
“Glossary ⇒.” Sporting Arms and Ammunition Manufacturers’ Institute. Ed. SAAMI’s Technical Committee. Web. 15-18 Jan. 2011.
Question:
- Are barrel erosion and barrel wear the same thing?