1、MIL-C-70725A = 9999906 I1953099 LbT INCH-POUND I MIL-C-70725A (AR) 08 December 1993 SUPERSEDING MIL-C-70725 (AR) 2 July 1992 MILITARY SPECIFICATION CARTRIDGE, 5.56MM, M862 SHORT RANGE TRAINING AMMUNITION PERFORMANCE SPECIFICATION FOR This specification is approved for use by the U.S. Army Armament,
2、Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers quality assurance provisions and preparation for delivery for Cartridge, 5.56m Short Range Training Artununition (SRTA) (see 6.1). 2. A
3、PPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of
4、 the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document, should be addressed to: Commander,
5、 U.S. Army ARDEC, ATTN: SMCAR-BAC-SI Picatinny Arsenal, New Jersey 07806-5000 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 1305 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimit
6、ed. Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70725A 9999906 L753100 701 W SPECIFICATIONS FEDERAL 0-1-503 P-D-680 PPP-B-636 W-L-800 MILITARY MIL-P-116 MIL-C -3 7 2 MIL-L-2104 MIL-A-2550 MIL-L-14107
7、 MIL-L-46000 MIL-L-46167 MIL-A-48078 MIL-L-63460 STANDARDS MILITARY MIL-STD-100 MIL-STD-109 MIL-STD-129 MIL-STD-973 MIL-STD-636 MIL-STD-644 MIL-C-70725A (AR) Insect Repellant Dry Cleaning Solvent Box, Shipping, Fiberboard Lubricating Oil, General Purpose, Preservative (Water-displacing, Low Temperat
8、ure) Preservation, Method of Cleaning Compound, Solvent, for Bore of Small Arms and Automatic Aircraft Weapons Lubricating Oil, Internal Combustion Engine, Tactical Service Ammunition, General Specification for Lubricating Oil, Weapons, Low Temperature Lubricant, Semi-Fluid (Automatic Weapons ) Lubr
9、icant Oil, Internal Combustion Engine, Arctic Ammunition, Standard Quality Assurance Provisions, General Specification for Lubricant, Cleaner and Preservative for Weapons and Weapon Systems (Metric) Engineering Drawing Practices Quality Assurance Terms and Definitions Marking for Shipment and Storag
10、e Configuration Management Visual Standards for Small Arms Ammunition through Caliber .50 Visual Inspection/Standards and Inspec- tion Procedures for Inspection of Pack- aging, Packing and Marking of Small Arms Ammunition 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without
11、 license from IHS-,-,-MIL-C-70725A 9999906 1953101 648 MIL-C-70725A (AR) MIL-STD-650 - Explosives: Sampling, Inspection and MIL-STD-810 - Environmental Test Methods and MIL-STD-1168 - Lot Numbering of Ammunition Testing Engineering Guidelines (Unless otherwise indicated, copies of federal and milita
12、ry specifications, standards, and handbooks are available from the DODSSP - Customer Service, Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawinqs, and publications. drawings, and publications form a part of this
13、 document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. The following other Government documents, DRAWINGS (see 6.4) U.S. ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER ( ARDEC ) 6006874 6109086 7643674 8421679 8837375 1200289
14、8 12002899 LI12576485 12598589 “E“ Cardboard Silhouette Target IF“ Cardboard Silhouette Target Classification of Cartridge Case Defects for Small Arms Ammunition M31A2, Trainfire Target Holding Mechanism ARRADCOM Environmental Testing Criteria for OCONUS Shipping Containers “E“ Polyethylene Silhouet
15、te Target IF“ Polyethylene Silhouette Target Inspection Equipment List, Function and Casualty Cartridge, 5.56mm Short Range, M862 PUBLICATIONS DEPARTMENT OF DEFENSE JSSPM - Joint Services Safety and Performance Manual for Qualification of Explosives for Military Use for 5.56mm Heavy Bullet Cartridge
16、s for 5.56mm Cartridges Classification Procedures SCATP-5.56mm - Small Caliber Ammunition Test Procedures Heavy Bullet SCATP-5.56m - Small Caliber Ammunition Test Procedures TB 700-2 - Department of Defense Explosives Hazard 3 Provided by IHSNot for ResaleNo reproduction or networking permitted with
17、out license from IHS-,-,-NIL-C-70725A = Ob 3753302 584 m MIL-C-70725A (AR) TOP-3-2-045 - TECOM Test Operating Procedure, TECP-700-700 - Manual of Tests Methods for Small Arms Vol. III munition Automatic Weapons, Machine Guns, Hand and Shoulder Weapons DEPARTMENT OF TRANSPORTATION Code of Federal Reg
18、ulations, Title 49 UNITED NATIONS United Nations- Transport of Dangerous Goods (Copies of other Government documents, drawings, and publications required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contractin
19、g activity.) 2.2 Non-Government Dublications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise s
20、pecified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). O AMERICAN NATIONAL STANDARDS INSTITUTE ANSI Y14.5M-82 - Dimensioning and Tolerancing (Application for copies should be addressed to ANSI, 1430 Broadway, New York, NY 10018
21、.) 2.3 Order of mecedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. (See contr
22、act provisions for additional precedence criteria.) 3. REQUIREMENTS 3.1 General. The cartridges shall comply with the require- ments shown on drawing 12598589, reference specifications and the requirements stated in this section. All of the cartridge components shall be compatible with each other. T
23、he primer mix shall be non-corrosive and the propellant shall be smokeless. 4 a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-C-70725A 9999906 1953103 410 . The cartridge shall be compatible with the 5.56m 20- and 30- round magazines, as well
24、as, bolts, chambers, barrel bores and feed systems of the M16A1 and M16A2 rifles when equipped with an M2 training bolt. 3.2 Qualification. A sample shall be submitted for quali- fication in accordance with the technical provisions specified herein (see Section 4). The purpose of the qualification i
25、s to verify that a particular contractors design is capable of meeting the requirements of this specification. Upon quali- fication, the contractors design shall be considered qualified indefinitely. The contractor shall submit level 3 detailed item drawings in accordance with MIL-STD-100, MIL-A-255
26、0 and ANSI Y14.5-82 to the Government for configuration control. All changes shall be submitted in accordance with MIL-STD-973 for review and approval by the Government. The Government reserves the right to subject the revised design to any or all the quali- fication evaluations specified in 4.3 at
27、the expense of the contractor. 3.3 First article. When specified in the contract or purchase order (see 6.2) a sample shall be subjected to first article inspection in accordance with the technical provisions herein (see 4.4) . 3.4 Performance characteristics. e 3.4.1 Primer sensitivitv. The average
28、 height (h) and standard deviation(s) of the height of fire shall be such that h+3s S 13“ and h-3 2 2.5“. 3.4.1.2 Residual stress. The cartridge shall not split when subjected to the accelerated stress test for the applicable materials. 3.4.1.3 Bullet pull. The force required to separate the bullet
29、from the cartridge case shall not be less than 156N (35 lbf) . 3.4.1.4 Waterproof. 3.4.1.4.1 Waterproof (bubble test). The cartridge shall release not more than one bubble of air when tested at a pressure 13.8 kPa (2 psi) below atmospheric pressure for 30 seconds. As an alternate procedure or for re
30、testing use the waterproof (firing) procedure below. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-70725A 9999906 1953104 357 MIL-C-70725A (AR) 3.4.1.4.2 Waterproof (firins test). After immersion in 20C (68F) water for 24 hours the mean ve
31、locity of the test cartridges shall not vary from the mean velocity obtained in the 20C dry test by more than t 30 mps (98 fps). 3.4.2 Chamber pressure. The mean chamber pressure of cartridges, using a Government approved piezoelectric transducer, conditioned at 20C (68F) shall not exceed 220 mpa (3
32、2,000 PSIG). The chamber pressure of any individual cartridge shall not exceed 255 mpa (37,000 PSIG) . 3.4.2.1 chamber pres -20C (-4F) Chamber pressure at extreme temperatures. The mean sure of cartridges conditioned at 50C (122F) and shall not increase more than 20 mpa (2,900 PSI) above the mean ch
33、amber pressure obtained at 20C. The chamber pressure of any individual cartridge, conditioned at -55, 20,50 and 68C (-65, -4, 122 and 165“F), shall not exceed 255 mpa (37,000 PSIG). Decreased chamber pressure is acceptable. 3.4.3 Velocity. The mean velocity of cartridges conditioned at 20C (68F) mea
34、sured at 4.57 m (15 ft) from the muzzle of the weapon shall not vary more than f 6 percent from the design velocity. The design velocity is the mean velocity (uncorrected) obtained during qualification testing at 20C. Design velocities shall be established for both 1 in 7 inch and 1 in 12 inch twist
35、 barrels. 3.4.3.1 Velocitv at extreme temperatures. The mean velocity of cartridges conditioned at 50C (122F) and -20C (-4F) shall not vary by more than +10 percent from the mean velocity at 20C (for both 1 in 7 inch and 1 in 12 inch twist barrels). 3.4.4 Action time. The action time (overall primer
36、 ignition, propellant burning, plus the time taken for the bullet to exit the barrel) of cartridges conditioned at 20C (68“F), 50C (122F) and -20C (-4F) shall not exceed 2.5 ms. 3.4.5 Dispersion. For both 1 in 7 inch and 1 in 12 inch twist barrels, the average of the mean radii of all 10-round targe
37、ts fired at a distance of 25 meters (m) from the muzzle shall not exceed 30 mm. 3.4.5.1 Match. The center of impact of the cartridges fired at targets located 25 m from the weapon shall not deviate in a vertical direction by more than 20 mm when compared to M193 Ball (when fired in a 1 in 12 inch tw
38、ist barrel) and the M855 Ball (when fired in a 1 in 7 inch twist barrel). 6 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-C-70725A m 9999906 L953L05 293 m MIL-C-70725A (AR) 3.4.6 Function and casualtv. The cartridge shall function without ca
39、sualty within the temperature range of -20“ to 50C in the M16A1 and M16A2 rifles equipped with the M2 training bolt. The cartridge shall safely function (no critical firing defects) within the temperature range of -55C to 68C. O 3.4.6.1 Cy clic rate. The cartridge shall function in the M16A1 and M16
40、A2 rifles equipped with the M2 training bolt at an average cyclic rate between 550 and 920 rounds per minute within the temperature range of -20C to 5OOC. 3.4.6.2 Noise level. The noise level of the cartridges shall be greater than 100 decibels when the noise level of ball cartridges fired under ide
41、ntical conditions is between 120 and 130 decibels. The noise level of the cartridges at the gunners ear position shall not exceed 164 decibels. cause breech flash which would endanger the shooter. 3.4.6.3 Breech flash. Firing the cartridges shall not 3.4.6.4 Hot chamber effects. A cartridge inserted
42、 into the chamber immediately following the firing of 120 cartridges shall not fire (cook off). In addition, the cartridge shall not deform to the extent that clearing of the weapon is made difficult following the proper waiting period. safe to store and fire (no critical defects as defined by Table
43、 IV) when subjected to the lubricants and solvents listed below. The reliability of the cartridge shall not degrade by more than 0.10 after exposure to the following substances (see 6.8.2): 0 3.4.6.5 Chemical compatibilitv. The cartridge shall be Mat er i a 1 Specification Bore Cleaner (RBC) Insect
44、Repellant Dry-cleaning Solvent (SD-1) Lubricating Oil (PL-S) Lubricating Oil (ICE, T) Lubricating Oil (LAW) Lubricating Oil (LSA) Lubricating Oil (ICE, A) Lubricant (CLP MIL-C - 3 7 2 0-1-503 P-D-680 W-L-800 MIL-L-2104 MIL-L-14107 MIL-L-46000 MIL-L-46167 MIL-L-63460 7 Provided by IHSNot for ResaleNo
45、 reproduction or networking permitted without license from IHS-,-,-MIL-C-70725A W 9999906 L95310b L2T W MIL-C-70725A (AR) 3.4.6.6 Bullet intesritv. The bullet of the cartridge shall not burst or fragment in the barrel or during its effective range when fired. 3.4.6.7 Ricochet. The bullet or bullet f
46、ragments shall not ricochet back and endanger the shooter or others located on the firing line, when fired at wood, metal or masonry targets at a distance of 5 meters, and target obliquities between O and 30 degrees normal to the line of fire. 3.4.6.8 Muzzle flash. The muzzle flash made by firing ca
47、rtridges shall be visible in darkness from 100 meters (109 yards) in front of the weapon. ii 3.4.6.9 Foulinq. The fouling produced by firing 1000 rounds shall be readily removable through standard cleaning methods and shall not cause a change in the cyclic rate greater than 15 percent. The average m
48、ean radius of all targets (at 25 meters) fired after the firing of the 1000 fouling rounds, shall not exceed 40 mm (1.57 inches). 3.4.6.10 Tarset kill. The test cartridges shall mark standard polyethylene and cardboard “E“ and “FI silhouette targets sufficiently to indicate target hits, and activate
49、 standard target mechanisms at a range of 25 meters. 3.4.6.11 Attitude. The cartridge shall be safe to fire (no critical defects as defined by Table IV) and the reliability shall not degrade by more than 0.10 (see 6.8.2) when fired at elevations between f 85“. 3.4.6.12 Maximum ranqe. The maximum range of the cartridge (when fired at standard atmospheric conditions) shall be no greater than 250 meters. All b
