MIL-HDBK-517 (NOTICE 1), DEPARTMENT OF DEFENSE HANDBOOK GUN PROPULSION TECHNOLOGY (1 DEC 2004)., MIL-HDBK-517 was approved for use by the Department of Defense on 1 December 2004. Due to volume of contents and complexity, copies of this handbook are available only on CD-ROM. Application for a CD-ROM copy should be sent to: Commander, U. S. Army ARDEC, ATTN: AMSRD-AAR-AIS-SS, Picatinny, NJ 07806-5000, email: ardec-stdzn@pica.army.mil.