Product line DM

12.7MMx99, DM31A1, Hartkern

47.5 g / 733 gr

The DM31A1 is a lead-free cartridge for the German Armed Forces with enhanced penetration capabilities. It is designed for use with repeater rifles and semi-automatic firearms for precision shooters and snipers. It has a hard core bullet consisting of a hardened steel core with a gas check. This guarantees high effectiveness against hard targets. The use of components without lead or heavy metals minimises exposure.

SINTOX
WATERPROOF
SHOCKPROOF
MAXIMUM SHELF LIVE
HIGH PRECISION
LEADFREE
NATO
ARMOUR PIERCING
STANAG
TEMPERATUR RANGE

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Product characteristics

Articlenumber*: 2413147
Product line: DM
Caliber: 12,7x99
Purpose: Military, German Armed Forces
Bulletweight (g): 47.5 g
Bulletweight (gr): 733 gr
Bullet type: Full metall jacket-hard core
Bullet material: Tombac (galvanised) / Steel (galvanised)
Bullet jacket material: Tombac (galvanised)
Bullet core material: Steel (galvanised)
Leadfree: Yes
Primer cap: SINTOX
Case material: Brass
Propellant powder: Two-base nitrocellulose powder
Total cartridge mass (g): ca. 122 g
Net explosive mass (g): ca. 17 g
Weapon category: Anti-material rifle, Heavy machine gun
Temperature range: -54°C to +63°C

*article number for the smallest packaging unit

Data according to technical delivery terms

Mean gas pressure: max. 4,500 bar (21°C)
Velocity measuring point: v10
Velocity (m/s): 895 m/s
Velocity (ft/s): 2,936 ft/s
Energy (J): 19,024 J
Length test barrel: 1143 mm
Velocity measuring point tolerance (± m/s): 10 ± m/s

Precision data

Accuracy type: sV; SH
Accuracy determination range (m): 300 m
Precision requirement: ≤ 75 mm
Length test barrel: 1143
Penetration performance: 3,5 mm SR235JR

Barret M82 (G82)

Barrel length:: 737 mm
Twist length:: 381 mm (1:15")

Ballistic data – Anti-material rifle

Velocity measuring point type II: v10
Velocity (m/s): 895 m/s
Weapon category: Anti-material rifle

Distance (m)	Velocity (m/s)	Energy (J)	Flight time (ms)	Ballistic coefficient G1	Ballistic coefficient G7
0	900	19238	0
25	887	18686	28	0,603	0,334
100	851	17200	114	0,627	0,306
150					0,339
200	805	15391	235	0,643	0,349
250					0,36
300	762	13790	363	0,662	0,355
350					0,367
400	722	12380	498	0,685	0,361
450					0,374
500	683	11079	640	0,686	0,349
550					0,382
600	645	9881	791	0,686	0,356
700	608	8780	951	0,675
800	573	7798	1120	0,69
900	539	6900	1300	0,688
1000	505	6057	1492	0,65
1100	473	5314	1696	0,656
1200	442	4640	1915	0,638