decoppering agent

decoppering agent

[dē′käp·ə·riŋ ‚ā·jənt]
(ordnance)
Material, such as finely divided tin, included in a propelling charge, or inserted in the chamber with the propelling charge, for the purpose of removing the coppering from the surface of the bore.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
It's a clean-burning, temperature-resistant ball powder that meters easily through small case necks, and also includes a decoppering agent, nice when shooting hundreds of rounds a day.
This just happens to be another spherical powder with a decoppering agent, slightly slower burning than TAC.
But the introduction of Ball Powder in 1933 increased copper-fouling again, so "decoppering agents" were added to military Ball powders.