breech preponderance

breech preponderance

[′brēch prə′pan·drəns]
(ordnance)
Unbalance of the tipping parts of a weapon when the weight of the breech exerts a greater moment about the trunnions than does the weight of the muzzle end.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.