.327 Federal Magnum

.327 Federal Magnum
.327 Federal Magnum (left) with a .357 Magnum (right)
TypeRevolver
Place of originUnited States
Production history
DesignerFederal Premium Ammunition and Sturm, Ruger & Co.
Designed2007
Produced2008–present
Specifications
Parent case.32 H&R Magnum
Case typeRimmed, straight
Bullet diameter.312 in (7.9 mm)
Neck diameter.337 in (8.6 mm)
Base diameter.337 in (8.6 mm)
Rim diameter.375 in (9.5 mm)
Rim thickness.055 in (1.4 mm)
Case length1.20 in (30 mm)
Overall length1.47 in (37 mm)
Primer typeSmall pistol magnum
Maximum pressure45,000 psi (310 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
100 gr (6 g) JHP 1,400 ft/s (430 m/s) 435 ft⋅lbf (590 J)
115 gr (7 g) JHP 1,300 ft/s (400 m/s) 431 ft⋅lbf (584 J)
100 gr (6 g) JHP* 1,655 ft/s (504 m/s) 640 ft⋅lbf (870 J)
115 gr (7 g) JHP* 1,587 ft/s (484 m/s) 620 ft⋅lbf (840 J)
Test barrel length: 3 1/16 in, * 512" Blackhawk Revolver
Source(s): Outdoor Writers[1] * Ballistics by the inch[2]

The .327 Federal Magnum is a cartridge introduced by Federal Premium Ammunition and also sold by Sturm, Ruger & Co. It is intended to provide the power of a .357 Magnum in six-shot, compact revolvers, whose cylinders would otherwise only hold five rounds. The .327 has also been used in full-sized revolvers with a capacity of seven rounds or more. The .327 Federal Mag is an example of a "super magnum", because it is a magnum of a magnum, the .32 H&R Magnum.[3]

  1. ^ "Federal Premium and Ruger Introduce New Revolver Cartridge—the 327 Federal Magnum". Outdoor Writers - News Releases. Archived from the original on 22 January 2008. Retrieved 7 September 2010.
  2. ^ "Bench Tests of the .327 Federal Magnum".
  3. ^ "327 Federal Magnum: A Good .357 Magnum Alternative?". 31 December 2022.