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Chapter 1
9-1
AMCR 715-505
Volume 5
9.3.2.2 The ammunition to be tested (not exceeding five cartridges at a
time} shall be placed horizontally on the tray in the Glass Test Chamber and the
lid placed in position. The glass tap shall be turned to allow the vacuum
reservoir to evacuate the Glass Test Chamber to the required pounds per square
inch below atmospheric pressure and shall be held at that pressure for the speci-
fied time. The number of bubbles liberated from the mouth or primer, or both, of
each cartridge shall be observed. At the end of the specified time the vacuum
shall be released from the Glass Test Chamber, the lid removed and the ammunition
removed.
9.3.2.5 The procedure prescribed in 9-3*2.1 and 9*3-2.2 shall be repeated
until the required number of cartridges has been tested,
9.4 RECORDING OF DATA
Results of Waterproof test shall be recorded as follows:
9.4.1 No leak.
9.4.2 Slow Leak.- A series of two or more air bubbles appearing at the prim?
er or mouth of the case, or both, but which are liberated at such a rate that only
one bubble from either the primer or the mouth of the cartridge is in transit to
the surface at any one time.
9.4.5 Past Leak.- A series of air bubbles appearing at the primer or mouth
of the case, or both, which are liberated at such a rate that more than one bubble
from the primer or the mouth of the cartridge case is in transit to the surface
at any one time,
9.4.4 Location of leak; .identify area of leak with machinist layout ink.
Chapter 1
9-2
SUGGESTED FORMAT
Propellant
Engineering Proof Testing Record
Waterproof Test
AMCR 7L5-505
Volune 5
Ammunition:
Army Lot
Charge
Caliber
Case
Bullet
Primer
Wt.
Grs.
Sample
Size
Number of Cartridges
No Leak
Slow Leak
Fast Leak
Percentage
Waterproof
Location of Leaks:
Remarks :
Proof Technician
Date of Test
Chapter 1
9-3
AMCR 715-505
Volu.ne 5
CHAPTER 2
BLANK CARTRIDGES
Paragraph Page
Section 1. Function and Casualty Test Procedure
Purpose ]_]_ -j^
Equipment 1 1 2 i _i
Test procedure 1.3 ^_]_
Pre-firing (Preparation for test) l.l'.l l-l
During firing 1.3-2 l-l
Recording of data 1,4 ]__2
Operational notes 1.5 i_2
Definitions 1 6 i -3
Section 2. Screen Perforation Test Procedure
Purpose 2.1 2-1
Equipment 2.2 2-1
Teat procedure 2.3 2-1
Pre-flring (Preparation for test 2.3,1 2-1
During firing 2.3.2 2-2
Recording of data 2.1 2-2
Blank Cartridges (Line-Throwing)
Section, 3. Range Test Procedure
Purpose 3.1 3-1
Equipment 3.2 3-1
Test procedure 3.3 3-1
Pre-firing (Preparation for test) 3.3.1 3-1
During firing 3.3.2 3-2
Recording of data 3.4- 3-3
Section 4. Temperature (High & Low) Test Procedure
Purpose 4.1 1|-1
Equipment 4.2 U-l
Test Procedure 4,3 1-1
Pre-firing (Preparation for test) 1.3.1 1-1
During firing 1.3.2 1-1
Recording of data 4.1 1-2
Chapter 2
5-7
AMCR 715-505
Volume 5
SECTION 6
WATERPROOF TEST PROCEDURE
(LINE -THROWING CARTRIDGE)
6 . 1 PURPOSE
To determine the water-tightness of cartridges,
6 . 2 EQUIPMENT
Equipment listed in the Waterproof section of the appropriate
Inspection Equipment List shall be used,
6.3 TEST PROCEDURE
6.3.1 The test cartridges and the water-bath itself must be temperature
conditioned at 70P. , + 2P. before the cartridges are submerged in the bafch.
6.3.2 The cartridges are then placed in the bath in a horizontal position,
The depth of the bath Is adjusted so that the water surface rises one inch above
the top of the rim of the cartridges,
6.3.2,1 The cartridges shall remain in the bath a continuous 2*1- hours.
6.3.3 After 2^ hours have elapsed, the cartridges shall be removed from
the bath, wiped dry, placed In a reaessed holding block, primer end down, and
then placed in a temperature controlled container or room for a o minimum of two
hours. The container or room shall be maintained at 70 F. , +2 P.
6.3.4- Upon completion of conditioning, the ammunition shall be fired fol-
lowing the procedures prescribed in Section 3 'and 5 of this Chapter (Chapter 2).
6.3,5 Results shall be recorded on suggested formats contained in Section
3 and 5 of this Chapter (Chapter '2).
Chapter 2
6-1
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