Proof charge

(Firearms) a charge of powder and ball, greater than the service charge, fired in an arm, as a gun or cannon, to test its strength.

See also: Proof

References in periodicals archive ?
The pricing quoted must be firm and include set up charges, artwork charges, color charges, proof charges, charges for delivery to all locations listed in Exhibit E, Shipping Locations/Shipping quantities, and all other applicable charges.