6mm AR

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6mm AR
TypeCenterfire rifle
Place of origin United States
Production history
DesignerRobert Whitley
Specifications
Parent case6.5 Grendel
Case typeRimless, bottleneck
Bullet diameter.243 in (6.2 mm)
Neck diameter.271 in (6.9 mm)
Shoulder diameter.4323 in (10.98 mm)
Base diameter.4433 in (11.26 mm)
Rim diameter.4449 in (11.30 mm)
Rim thickness.0591 in (1.50 mm)
Case length1.525 in (38.7 mm)
Overall length2.260 in (57.4 mm)
Case capacity36 gr H2O (2.34 cm³)
Rifling twist1-8"
Primer typeSmall rifle
Ballistic performance
Bullet weight/typeVelocityEnergy
105 gr (6.8 g) Berger VLD2,750 ft/s (840 m/s)1,763 ft·lbf (2,390 J)
Source(s): http://www.6mmbr.com/gunweek068.html
 
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6mm AR
TypeCenterfire rifle
Place of origin United States
Production history
DesignerRobert Whitley
Specifications
Parent case6.5 Grendel
Case typeRimless, bottleneck
Bullet diameter.243 in (6.2 mm)
Neck diameter.271 in (6.9 mm)
Shoulder diameter.4323 in (10.98 mm)
Base diameter.4433 in (11.26 mm)
Rim diameter.4449 in (11.30 mm)
Rim thickness.0591 in (1.50 mm)
Case length1.525 in (38.7 mm)
Overall length2.260 in (57.4 mm)
Case capacity36 gr H2O (2.34 cm³)
Rifling twist1-8"
Primer typeSmall rifle
Ballistic performance
Bullet weight/typeVelocityEnergy
105 gr (6.8 g) Berger VLD2,750 ft/s (840 m/s)1,763 ft·lbf (2,390 J)
Source(s): http://www.6mmbr.com/gunweek068.html

The 6mm AR is a centerfire wildcat cartridge designed by Robert Whitley[1] for long-range performance in an AR-15 rifle. The cartridge uses a 6.5 Grendel case that has been necked-down to accept a 6 mm (.243 in.) bullet.[2]

See also

References

  1. ^ http://www.6mmbr.com/gunweek068.html
  2. ^ http://6mmar.com/6mm_AR_Loading_Info.html