User:Vjaarland/Sandbox4

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6.5×45mm MASSOR
TypeRifle
Place of originValduvia
Service history
In service1956–present
Used byMASSOR
Wars
Production history
DesignerValduvian Workers' Army
Designed1953
Produced1954–present
Specifications
Case typeRimless, bottleneck
Bullet diameter6.71 mm (0.264 in)
Neck diameter7.44 mm (0.293 in)
Shoulder diameter10.90 mm (0.429 in)
Base diameter11.30 mm (0.445 in)
Rim diameter11.30 mm (0.445 in)
Rim thickness1.50 mm (0.059 in)
Case length45.00 mm (1.772 in)
Overall length60.00 mm (2.362 in)
Case capacity2.79 cm3 (43.1 gr H2O)
Rifling twist200 mm
Primer typeLarge rifle
Maximum pressure (C.I.P.)380.00 MPa (55,114 psi)
Ballistic performance
Bullet mass/type Velocity Energy
7.0 g (108 gr) 870 m/s (2,900 ft/s) 3,035 J (2,239 ft⋅lbf)
Test barrel length: 520 mm (20.472 in)

The 6.5×45mm MASSOR, also known as 6.5×45mm Valduvian or simply 6.5×45mm, is a rimless bottlenecked intermediate rifle cartridge developed in Valduvia during the 1950s. It has been the standard service rifle chambering for the Valduvian Workers' Army since 1956, and was adopted as the MASSOR standard upon the organization's establishment in 1999. The cartridge is currently used in the Lielstraupe TŠ-90 and TBA assault rifles, as well as the TBA light machine gun.