1、63745- MIL-C-b3450 13 W 37737Ob 0350774 3 W MIL-C-63-450-(Ak) 2Q March 1981 MILITARY SPECIFICATION CARTRIDGE, 7.62MMp MATCH, XM852 This specification is approved for use by the U.S. Army Armament Research and Development Command, and is available ?or use by all Department and Agencies of the Departm
2、ent of Defense. 1, SCOPE 1.1 This specification covers Cartridge, 7.62MM, Match, XM852 intended for marksmanship training and competitive firing in 7.62MM National Match Rifles. 2. APPLICABLE DOCUMENTS 2.1 Issue of documents. The following documents of the issue in effect on date of invitation for b
3、ids or request for proposal, form a part of this specification to the extent specified herein. SPEC IF1 CATIONS MILTIARY MIL-A-48078 STANDARDS FEDERAL MIL-STD-105 MIL-STD-109 MIL- STD-6 36 MIL- STD-644 MIL-STD-1168 MIL-STD-1170 - Ammunition, Standard Quality Assurance Provisions, General Specificati
4、on For. - Sampling Procedures and Tables for - - Visual Inspection Standards for Small - Visual Inspection Standards and Inspections of Attributes, Quality Assurance Terms and Definitions. Arms Ammunition Through Caliber .50. Inspection Procedures for Inspection of Packaging, Packing and Marking of
5、Small Arms Ammunition. Visual Standards and Comparison Methods for Evaluating Grain Configuration in 7.62MM Cartridge Cases. - Lot Numbering of Ammunition. - I THIS DOCUMENT CONTAINS ,b PAGES. ./ .r= Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-UI
6、L-C-b3qSO 13 - 7777706 0350775 5 MIL-C-63450 (AR) Federal Test Method Standard No. 151 - Metals, Test Methods. 2.2 Other publications. DEPARTMENT OF DEFENSE SCATP-7.62MM - DRAWINGS 9341 5 5 1 - 7643674 - 9341 748 - 9341749 9341750 - LI 9341551 - Ammunition Ballistic Acceptance Test Method s. Cartrid
7、ge, 7.62MM, Match, -XM852, Classification of Cartridge Case Defects Small .Arms Amunition. Label, Carton. Packing and Marking Cartridges, 7.62MM, Match, XM852, Cartons, Box, Ammunition, M2A1. Packaging and Marking, Cartridges 7.62MM, Match, XM852: Cartons; box amutunition, M2Al; box wirebound Index
8、of Inspection Equipment List for: Cartridge, 7,62MM, Match, XM852. (Copies of specifications, stnadards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. ?U
9、QUIREMENTS 3.1 First article inspection. Requirements for the submission of first article samples shall be as specified in the contract. Unless otherwise specified, the first article shall include the pilot pack. 3.2 Material. Materials shall be in accordance with the applicable drawings and specifi
10、cations. 3.3 Part. The part shall comply with all requ Dwg. 9341551, all associated drawings, and with all in applicable specifications. CII rements specified on requirements specified 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63450 13
11、9779906 0350776 7 W MIL-C-63450 cml 3.4 Bullet extraction. The force necessary to extract the bullet from the cartridge case shall be not less than 20 pounds. 3.5 Residual stress. The cartridge case shall not split when subjected to one percent mercurous nitrate solution for 15 minutes. 3.6 Accuracy
12、. The average extreme spread of all targets, each target containing 14 shots fired at 600 yards, shall not exceed 8.0 inches . 3.7 Velocity. The average velocity of the sample cartridge, conditioned at 700 + 2O Fahrenheit (F), shall be 2,550 feet per second (ft/sec) plug or minus 30 ft/sec, at 78 fe
13、et from the muzzle of the weapon. The standard deviation of the velocities shall not exceed 28 f t/sec . 3.8 Chamber pressure. The average chamber pressure of the sample cartridges conditioned at 70F + 2OF, shall not exceed 50,000 pounds per square inch (psi). sample cartridge, nor the average chamb
14、er pressure of the sample cartridges plus three standard deviations of chamber pressure shall not exceed 55,000 psi. Neither-the chamber pressure of an individual 3.9 Port pressure. The average port pressure of the sample cartridges, conditioned at 7OoF - + 2OF, shall be 12,500 psi psi. 3.10 Functio
15、n and casualty. The cartridge shall function without casualty. 3.11 Grain configuration. The grain configuration of the sidewall of the finished cartridge case shall fall within the range defined by the grain configuration standards illustrated in MIL-STD-1170, Figures 1 through 6. 3.12 Workmanship.
16、 The requirements for workmanship are as specifisd on the applicable drawings, referenced specifications and the following: 3.12.1 Metal defects. The cartridge shall he free of folds, wrinkles, deep draw scratches, scaly metal, dents and other defects. 3.12.2 Foreign matter. The cartridge shall be f
17、ree of corrosion, strains, discoloration, dirt, oil, and smears of lacquer. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-63Y50 13 = 7993706 0350777 7 MI Ja -C- 6 34 5 O (.AF) 4. QUALITY ASSURANCE PROVISIONS 4.1 provisions. provisions of
18、MIL-A-48078 shall apply and are hereby made a part of this derail specification. Responsibility for inspection arid standard quality assurance Unless otherwise speciEied herein or in the contract, the 4.2 Classification of inspections. The following types o inspectiorshall be conducted on this item.
19、 a. First Article Inspection. be Quality Conformance Inspection. 4.1) First article inspection. 4.3.1 Submission. The contractor shall submit a first article as designated by the Contracting Officer for evaluation in accordance with the provisions of 4.3.2. The first article sample shall consist of
20、the following items in sample quantities as indicated. PART DESCRIPTION DRAWINGS QUANTITY Cartridge, 7.62MM Match, XM852 9342551 400 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I herein. 4.3.3 Rejection. See MIL-A-48078. 4.3.3.1 Function and casualty, a. Any misfires. b. Any bullet
21、remaining in bore. C. indent in primer cup. Two or more primer leaks due to perforation in firing pin d. Two or more primer leaks due to escape of gas through primer cup other than “C” above. e. Four or more primer leaks due to escape of gas around primer cup . 4 Provided by IHSNot for ResaleNo repr
22、oduction or networking permitted without license from IHS-,-,-MIL-C-63450 CAR) f, Two or more primer leaks due to primer that remains in pocket, but is physically loose. g. Any blown primer. h. Any primer that falls out of pocket on retraction of bolt. i. Six or more 1ongitudinal.splits at neck and
23、shoulder (I and 8) . j. Two or more longitudinal splits, body (J). 1c. Any longitudinal split, body (KI. 1. Any longitudinal split to head (L). m. Any longitudinal split through head (MI. n. Two or more circumferential ruptures. o. Any circumferential rupture: partial body (KIb p. Any circumferentia
24、l rupture: partial head (IL). qb Any circumferential rupture: complete. r. Any failure to extract. s. Any weapon stoppage. 4.4 Quality conformance inspection. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. In addition, each inspection lot shall contain: a. Primer from
25、 one lot and one manufacturer. b. Propellant from one lot and one manufacturer. 4.4.2 Examination. See MIL-A-48078. a. Sampling plans. Unless otherwise specified in the Classification of Defects and Test Tables, sampling plans for major and minor defects shall be in accordance with MIL-STD-105, Insp
26、ection Level IT. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl b t a 4 W N tn n n -5 U fd c N c I-. al bD 21 4 k LI h m L PlIL-C-63Lt50 13 W 7777706 0350777 2 u i! u (i! 3 Fi d O .FI u h u u m E rl m 4 U z v L Provided by IHSNot for ResaleNo r
27、eproduction or networking permitted without license from IHS-,-,-MIL-C-b3q50 13 W 7777706 0350780 7 W m 8 4 E % c O i h r; M . w h al M tt rf k U k m 0 d . c: 9 .FI u U o al Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m 8 ti a N W 4 h . P 4 MIL-C
28、-63450 13 m 777770b 03.50783 O m .?I U n -5 u m x FI m *-I u E 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P O E P z E W up um 2s P L P 2 a W K K MIL-C-b3450 13 rn 777770b O350782 2 rn a al &I m al fi .r h d E2 m U u) a ctl U u W F, QF, alo o .
29、rl a MC al .d $2 es h .rl u0 u 20 Li1 9 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63450 13 H 7777906 0350783 ! = , . um b O Cu c cm o A rn LI II 10 -A Provided by IHSNot for ResaleNo reproduction or networking permitted without license
30、from IHS-,-,-I E O U c 9 . H H w I4 3 MIL-C-b3450 13 77777Ob 0350784 b 9 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63Y50 13 MIL-C- 6 345 O (m) 4.4.3 Testing. Testing is described in the First Article and 4.4.3.1 Packaging, packing, and
31、 marking. Inspection for packaging,. packing and marking shall he in accordance with MIL-CTD-644, immediately prior to the packaging operation, 100 percent examination o the cartridges shall be performed to ascertain that the cartridge type conforms to the drawing. Occurrence of a high pressure test
32、 cartridge shall be classed as a critical deEect. other than high prescrire test shall be classed as e major defect. All non-conforming cartridges shall be rejected. Qua 1 it y Coiif ormancs Inspec t ion Tables. During or Occurrence of any incorrect type 4.4.3.3 Firing defects. Firing defects and ac
33、ceptance numbers shall he as specified in Table I. t 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i a MIL-C-63450 33 9797706 0350786 T = MIL-C-63450 AR) Defects 1. Misfire 2. Bullet remaining in bore L/ TABLE III 3, Primer leak a. Perforation i
34、n firing pin indent in primer cup b. Escape of gas through primer cup other than 3a c. Escape of gas around primer d. Primer remains in pocket, e. CUP 21 but is physically loose Blown primer or primer fails out of pocket or retraction of bolt 4. Case casualties a. Longitudinal split 21 (1) Neck and
35、shoulder (I SI S) (2) Body (JI (3) Body (K) (4) To head (L) (5) Through head (MI b, Circumferential rupture 31 (1) Partial, shoulder 07 body (2) Partial, body (K) (3) Partial, head (LI (4) Complete (J and SI 5. Failure to Extract Acceptance Number Cumulative First (First and Sample Second Sample) O
36、1 - O 1 2 1 3 2 5 - i/ No second sample permitted. Lot shall be rejected. - 21 - 31 Gas escapes around more than 50 percent of periphery of cup. For location of defects indicated by letters in parenthesis, see Drawing C7643674. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted
37、without license from IHS-,-,-MIL-C-63450 I3 777770b 0350787 I MIL-(3-63450 (AR) 4.4.4 Inspection equipment. The inspection equipment required to perform the examination and test prescribed herein is described in the Paragraph Reference/Inspection method column in the tables starting with Paragraph 4
38、.4.2.1. equipment designs in accordance with the terms of the contract. See Section 6 of MIL-A-48078 and 6.2 herein. The contractor shall submit for approval inspection 4.4.4.1 Index of inspection equipment list. The examination tests shall be made using equipment listed on LI 9341551. 4.5 Test meth
39、ods and procedures. 4.5.1 Rullet extraction. The test shall be conducted in accordance with SCATP 7.62MM. 4.5.2 Residual stress (Mercurous Nitrate). The test shall be conducted in accordance with SCATP 7 . 621M. 4.5.3 Accuracy. The test shall be conducted in accordance with SCATP 7.62MM. 4.5.4 Veloc
40、ity. The test shall be conducted in accordance with SCATP 7.62MM. 4.5.5 Chamber pressure. The test shall he conducted in accordance with procedures referenced in LI 9341551. 4.5.6 Port pressure. The test shall be conducted in accordance with SCATP 7.62bM. 4.5.7 Function and casualty. The test shall
41、be conducted in accordance with SCATP 7.62MM, except that all firings shall be semi- automatic. Two rifles shall be used, and one-half of the cartridges shall be fired in each weapon. 4.5.8 Grain configuration. The test samples shall be prepared and evaluated in accordance with MIL-STD-1170, 4.5.9 H
42、ardness testing. The bullets shall be extracted, the propellant removed and theprimers extracted. sample shall be prepared and placed on the appropriate test fixture for testing in accordance with Federal Test Method Standard No. 151, Method 244.1. shall. 5e computed and charted in accordance with t
43、he drawing requirements. Each cartridge case of the The hardness valries of the sample cases for each prescribed point 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.- I- NIL-C-63q50 13 7777706 0350788 3 = MIL-(2-63450 (AR) 4.5.10 Defect penalty
44、. In any ballistic test, except function and casualty, In which the occurrence of a firing defect listed in Table III prevents the obtaining of a reliable result for the characteristic being tested, an additional shot shall be fired. That particular test shall not be penalized, but the total ballist
45、ic sample shall be pe?ialized for such defects in accordance with Table III. 4.5.11 Test validity. If for any reason the proving ground . considers that the test conditions have detrimentally affected the test results, the test shall be declared invalid and a new test shall be performed with additio
46、nal samples. 5. PREPARATION FOR DELIVERY 5.1 Packing. Level A (World Wide Shipment). The cartridges shall be packed in accordance with Drawing 9341748, 9341749 and 9341750. 5.2 Marking and labeling. Packing boxes shall be marked and labeled in accordance with the applicable drawings cited in 5.1. 6.
47、 NOTES 6.1 Ordering data. See MIL-A-48078. 6.2 Submission of inspection equipment: designs for approval. See MIL-A-48078. Dover, NJ 07801, ATTN: DRDAR-QAA-T. Submit equipment designs as required to Commander, ARRADCOM, 6.3 Drawings. Drawings listed in Section 2 of this specification . under the head
48、ing U.C. ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND (ARRADCOM) may also include drawings prepared by, and identified as Edgewood Arsenal, Frankford Arsenal, Rock Island Arsenal or Picatinny Arsenal drawings. is now under the cognizance of ARRADCOM. Technical data originally prepared by these activities 6.4 Provisions for the supply, maintenance and disposition of mandatory ballistic test equipment for acceptance inspection purposes. 6.5 Provisions for the submission of acceptance inspection reports containing final inspection results for each lot o
