6.5×54mm Mannlicher–Schönauer

The 6.5×54mm Mannlicher–Schönauer also known as 6.5×54 Mannlicher–Schönauer Greek or simply 6.5 Greek is a 6.5 mm (.264" cal.) rimless rifle cartridge used in the Mannlicher–Schönauer rifle. It is the direct descendant of the 6.5×53mmR rimmed cartridge from the 1891 Mannlicher rifle, designed to function smoothly through the Schönauer's rotary magazine. 6.5 mm bullets are typically known for their high ballistic coefficients and sectional density, which gives them great stability in flight, resistance to wind deflection, and high penetrating power. It, along with the Mannlicher–Schönauer rifle, was first introduced in Paris at the 1900 World's Fair.

6.5×54mm Mannlicher–Schönauer
Austrian military cartridge from 1908.
TypeRifle
Place of originAustria-Hungary
Specifications
Parent case6.5×53mmR
Case typeRimless, bottleneck
Bullet diameter.264 in (6.7 mm)
Land diameter.255 in (6.5 mm)
Neck diameter.295 in (7.5 mm)
Shoulder diameter.428 in (10.9 mm)
Base diameter.452 in (11.5 mm)
Rim diameter.454 in (11.5 mm)
Case length2.11 in (54 mm)
Overall length3.00 in (76 mm)
Case capacity44.5 gr H2O (2.88 cm3)
Rifling twist1 in 9"
Primer typeLarge Rifle
Maximum pressure (C.I.P.)365.0 MPa (52,939 psi)
Ballistic performance
Bullet mass/type Velocity Energy
139 gr (9 g) Norma 2,510 ft/s (770 m/s) 1,950 ft⋅lbf (2,640 J)
159 gr (10 g) RWS 2,460 ft/s (750 m/s) 2,160 ft⋅lbf (2,930 J)
160 gr (10 g) Kynoch 2,395 ft/s (730 m/s) 2,035 ft⋅lbf (2,759 J)
135 gr (9 g) Kynoch 2,800 ft/s (850 m/s) 2,348 ft⋅lbf (3,183 J)
Test barrel length: 17.5
Source(s): Factory advertised velocity
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