MIL-DTL-0060944B (AR)
4.5.3 Propellant weight alternate method. At the start of production, 380 consecutive samples
per station, per machine, shall be selected and check weighed 100 percent. All samples shall comply
with the applicable drawing requirement. If all samples comply with the applicable drawing
requirement, 5 samples per station, for every 20 minutes production, shall be selected and the weight
of each of the 5 samples must meet the applicable drawing requirement. If any weight fails the
applicable drawing requirement, the 20 minutes production represented by that sample shall be
rejected and set aside for disposition in accordance with MIL-STD-1916. Correction will be made and
380 consecutive samples check weighed from that station. If all samples meet the applicable
requirement, sampling every 20 minutes shall be resumed.
4.5.4 Security of crimp of base plug and action time. The cartridge assemblies shall be
assembled to a projectile and fired from a M129 Grenade Launcher. After firing observation shall be
made for base plug movement and action time. If any base plug movement or action time exceeds the
applicable requirement, or any projectile lodges in the bore, the quantity represented shall be rejected
and set aside for disposition in accordance with MIL-STD-1916. The movement of the base plug shall
be measured from the highest point on the base plug to a point on the cartridge case directly beside it.
The cartridge case assemblies produced by each primer assembly machine shall be kept segregated
and identified. They shall not be used in production until successful completion of this test.
4.5.5 X-ray examination of ballistic sample. Prior to the forwarding of the cartridges to a
government approved facility for ballistic testing, the cartridges shall be inspected for defects using
approved x-ray equipment. This test shall be conducted from the side. If any critical defect is found,
the lot shall be rejected including the ballistic sample and set aside for disposition in accordance with
MIL-STD-1916. This test shall be conducted in accordance with ASTM 1255.
4.5.6 Air pressure. The cartridge assembly shall be placed in an approved fixture and a
measured quantity of air shall be applied to produce the required air pressure. Observations shall be
made for a drop in pressure indicating a leak. This is a non-destructive test. Parts successfully tested
may be returned to the lot.
4.5.7 Pull test of projectile. The cartridge shall be placed in an approved fixture and the axial
tension specified on the applicable drawing shall be applied. If the sample fails the drawing
requirement, the lot represent by the sample shall be rejected and set aside for disposition in
accordance with MIL-STD-1916, root cause assemblies may be reused after undergoing a
Government approved rework provided the same crimping method is used. Projectile assemblies if
undamaged may be reused. The cartridge shall be pulled until separation occurs and the data
observed.
WARNING: This test is conducted on assemblies containing an explosive element. Test
barricades (where used), procedures and equipment shall have prior Government approval.
4.5.8 Function test. The test shall be conducted at a government approved installation. If
new, the MK19, MOD III, Grenade Machine Gun and barrel shall have at least forty (40) rounds fired
on it prior to being used for the test. The distance to impact medium of coarse sand shall be 200
meters plus or minus (±) 5 meters.
4.5.8.1 Single shot. The barrel selected for the test must be used throughout the entire test.
The rounds shall be conditioned at 70 ± 5º F for at least (8) hours and then fired within 15 minutes of
being removed from conditioning temperature. The cartridges shall be fired single shot from a MK 19,
Mod III, Grenade Machine Gun at a rate not to exceed ten (10) per minute. At least six (6) gun
warmers shall be rapid fired at the beginning of the test. The velocity shall be measured at 30 feet
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