.429 DE

The .429 DE is a cartridge introduced in 2018 by Magnum Research for the Desert Eagle line of handguns.[2][3]

.429 DE
TypePistol
Place of originUnited States
Production history
DesignerJim Tertin
Designed2018
ManufacturerMagnum Research
Produced2018–present
Specifications
Parent case.50 AE
Case typeRimless, bottleneck
Bullet diameter.429 in (10.9 mm)
Primer typeLarge pistol magnum
Maximum pressure (SAAMI)46,000 psi (317 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
240 gr (16 g) Glacier Ridge JHP 1,625 fps (495.3 m/s)[1] 1,407 ft-lbs (1907.6 J)[1]
210 gr (14 g) Glacier Ridge JHP 1,750 fps (533.4 m/s) 1,427 ft-lbs (1934.8 J)
Test barrel length: 6 inches

Design

The .429 DE is a .50 AE case that is necked down to accept .429-diameter (10.9mm) bullets used in the .44 Magnum. The cartridge features a 25% increase in velocity and 45% increase of energy over a standard 240-grain .44 Magnum load of 1,285 ft⋅lbf (1,742 J) at 100 yd (91 m).[2] The .429 DE offers increased speed and accuracy over the .50 AE due to its lighter and slimmer projectile. Also, due to its use of the same cartridge design, one can easily convert a .50 AE Desert Eagle to .429 DE with only a barrel change. Magazines and bolts will both interchange between .50 AE and .429 DE. Though very similar to the obsolete .440 Cor-Bon, it is not interchangeable with that cartridge.[2] The same bolt and magazines can be used as the .50 AE-chambered Desert Eagle.[4] In 2021, the .429 DE was accepted into SAAMI standardization.[5]

References
  1. "The new 429 Desert Eagle cartridge". November 3, 2018. Retrieved January 1, 2019.
  2. Joseph Albanese (October 31, 2018). "A New Cartridge, Just for the Desert Eagle". Retrieved January 1, 2019.
  3. "420 Desert Eagle". Retrieved January 1, 2019.
  4. "First Look: 429 DE Pistol Cartridge". October 31, 2018. Retrieved January 1, 2019.
  5. GUY J. SAGI (February 25, 2021). "SAAMI Accepts Three of New Cartridges". Retrieved March 9, 2022.
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