MIL-DTL-48360A (AR)
3.4.3 Average pressure (+70ºF). The propelling charge, at recommended charge weight,
shall function and not produce an average chamber pressure greater than 46,500 psi when fired in
a M119 Howitzer.
3.4.4 Muzzle velocity and velocity standard deviation. The muzzle velocity at 70ºF shall
not be less than 2,052 feet per second and not greater than 2,102 feet per second and the standard
deviation of the lot shall not be greater than 8 feet per second.
3.5 Tolerance. A tolerance of +5°F applies to all -60°F and +5°F to all +145°F
requirements and a tolerance of plus or minus 2 ½ °F to all 70°F requirements.
3.6 Marking. In addition to any marking by the contract or order, marking shall be in
accordance with 9217087 except that the Department Of Transportation (DOT) nomenclature
shall be "PROPELLANT EXPLOSIVES, SOLID CLASS B" and have Storage Compatibility
Group "C" and Quantity Distance "1.3".
3.7 Workmanship. The propellant grains shall be free of dirt and foreign material. The
cloth and thread used for the manufacture of propelling charge bags shall be void of grease, oil,
dirt, foreign material, holes, rips or tears.
3.8 Fiber drums. Fiber drums shall comply with DOT Specification 21C, 250 pounds,
Minimum, Code of Federal Regulations, Title 49, Parts 100-199, and the following additional
requirements. Size shall be 15½ ± ½ inches in diameter by 26 ± 1 inches in height, inside
dimensions. The drum shall have a 23 or 24 gauge steel cover with rubber gasket, lever locking
band with provision for sealing wire and wire bottom chime (2 inch minimum formed height).
All metal parts shall be hot-dipped galvanized. Top and bottom chime shall be 23 or 24 gauge
steel and shall be welded. The body shall be wound with a hot melt or thermoplastic adhesive.
The bottom shall be a waterproof laminated fiberboard. Body and bottom disc shall also have a
laminated aluminum foil barrier. The bottom crimp shall be caulked. The finished drum with
closure assembled shall be moisture proof and leak tight. The fiber drums may be reused if the
drums comply with the inspection requirements of 4.3.2.8.
3.8.1 Alternative fiber drum. Alternatively, fiber drums shall be constructed as specified
in 3.8 except that a layer of aluminum foil 0.010 thick shall be laminated to the inside of the
body and the aluminum foil between the layers of Kraft paper in the body shall not be required.
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