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.
.327 Federal Magnum
.327 Federal Magnum (left) with a .357 Magnum (right)
Introduced by the Federal Cartridge company, now known as Federal Premium Ammunition, the .327 Federal Magnum was an attempt to improve on the .32 H&R Magnum introduced in 1984. Like the .32 H&R, the .327 Federal is a lengthened version of the original .32 S&W cartridge, which dates back to 1878. In 1896, the .32 S&W Long was introduced, which generated slightly higher velocities. The introduction of the .32 H&R increased pressures from 15,000 psi to 21,000 CUP, giving velocities of approximately 1,200 ft/s (370 m/s).[3]
Based on the .32 H&R Magnum, with a 1/8-inch longer case, a strengthened web at the base of the case, thicker case walls, and different heat-treatment and metallurgy, the .327 Federal can be loaded to much higher pressure levels (45,000 psi (310,000 kPa)) than its predecessor (21,000 CUP).[4] The .327's actual bullet diameter is .312 in (7.92 mm) and achieves muzzle velocities up to 1,400 ft/s (430 m/s) with 100 gr (6.5 g; 0.23 oz) bullets, and up to 1,300 ft/s (400 m/s) with 115 gr (7.5 g; 0.26 oz) bullets, when fired from the 3 1/16 in (78 mm)-barreled Ruger SP101 revolver.[5]
While perceived recoil exceeds that of the .32 H&R, revolvers in .327 Federal are much easier to control than equivalent models chambered in .357 Magnum. Comparing the two calibers, Chuck Hawks says, "There is no doubt that, for most shooters, the .357 Magnum produces uncomfortable recoil and muzzle blast."[6][7]
The .327's recoil energy is 3.08 ft⋅lbf (4.18 J) for an 85 gr (5.5 g; 0.19 oz) jacketed hollowpoint (JHP) load, 5.62 ft⋅lbf (7.62 J) for the 115 gr (7.5 g; 0.26 oz) JHP, and 5.58 ft⋅lbf (7.57 J) for the 100 gr (6.5 g; 0.23 oz) softpoint (SP). For comparison, the figures are 1.46 ft⋅lbf (1.98 J) for an 85 gr (5.5 g; 0.19 oz) .32 H&R Magnum load and 7.22 ft⋅lbf (9.79 J) for a 125 gr (8.1 g; 0.29 oz) .357 Magnum load.[6][7]
Firearms chambered for the .327 Federal Magnum
Revolvers in .327 Federal Magnum were initially offered by Charter Arms, Taurus, Ruger, and Freedom Arms, with Ruger's SP101 originally selected as the development platform for the new cartridge.[4]Freedom Arms made a single-action design, as did U.S. Fire Arms with its eight-shot Sparrowhawk. Ruger offered the double-action six-shot SP101 and seven-shot GP100, and the full-sized single-action eight-shot Blackhawk chambered in the caliber.[8] A version of the Ruger SP101 with a 3 1/16" barrel was released in January 2008.[9][10]
In late 2014, Ruger introduced the smaller-framed Ruger Single-Seven, a seven-shot single-action revolver based on the Single-Six.[11] In March 2015, Ruger re-introduced the SP101 in .327 Federal Magnum, featuring fully adjustable sights and a longer, 4.2 inches (110 mm) barrel.[12] In September 2015, Ruger also introduced the LCR, a double-action only, six-shot revolver with a polymer subframe,[13] as well as the later LCRx.[14]
In early 2017, Henry Repeating Arms announced production of four new lever-action long guns (a rifle and a carbine, each available with its receiver manufactured from either steel or hardened brass), with shipping scheduled to begin in March.[15] Hawks suggests that lever-action carbines in .327 Magnum will make "excellent, fun to shoot centerfire rifles for hunting javelina, jackrabbit, and coyote"; he also notes that revolvers with six-to-eight-inch barrels and adjustable sights "would be excellent hunting handguns for varmints and small predators, as well as offering flat-shooting protection from two-legged predators in the field."[6]
From left to right: .32 Short, .32 ACP, .32 S&W Long, .32 H&R Magnum and .327 Federal Magnum
In early 2022, Taurus released the Taurus 327 small frame revolver.[16]
Similar cartridges
The .327 Federal Magnum provides performance similar to the high-velocity rifle loadings of the old .32-20 Winchester, though these velocities are achieved in a much shorter revolver barrel, thanks to a much higher pressure ceiling for the .327.[6][17]
Another similar cartridge is the .30 Carbine, which has been offered in Ruger's single-action Blackhawk revolver line since 1968.[18] However, the .327 Federal Magnum has a higher maximum pressure (45,000 psi) than the .30 Carbine (40,000 psi).[7][17]
Gunsmiths working with Ruger and Freedom Arms have offered custom conversions of single-action .32 H&R Single Six and Freedom Arms revolvers to .327 Federal. Test results from the long barreled guns showed even higher velocities than the .30 Carbine, along with excellent accuracy.[19]
^"Taurus 327 Federal Magnum DA/SA Revolver". www.taurususa.com. Retrieved 15 February 2023.
^ abFrank C. Barnes, ed. Stan Skinner (2003). Cartridges of the World, 10th Ed. Krause Publications. ISBN0-87349-605-1.
^"Ruger Revolver Serial Number History". Sturm, Ruger.
^Jeff Quinn. "Freedom Arms Model 97 & Single Action Service Custom Ruger Revolvers Chambered for the New .327 Federal Magnum". GunBlast.com.
External links
Ballistics By The Inch .327 Federal Magnum Results.
August 21, 2023
federal, magnum, cartridge, introduced, federal, premium, ammunition, also, sold, sturm, ruger, intended, provide, power, magnum, shot, compact, revolvers, whose, cylinders, would, otherwise, only, hold, five, rounds, also, been, used, full, sized, revolvers, . The 327 Federal Magnum is a cartridge introduced by Federal Premium Ammunition and also sold by Sturm Ruger amp 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 amp R Magnum 327 Federal Magnum 327 Federal Magnum left with a 357 Magnum right TypeRevolverPlace of originUnited StatesProduction historyDesignerFederal Premium Ammunition and Sturm Ruger amp Co Designed2007Produced2008 presentSpecificationsParent case 32 H amp R MagnumCase typeRimmed straightBullet 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 magnumMaximum pressure45 000 psi 310 MPa Ballistic performanceBullet mass type Velocity Energy100 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 51 2 Blackhawk RevolverSource s Outdoor Writers 1 Ballistics by the inch 2 Contents 1 Development 2 Firearms chambered for the 327 Federal Magnum 3 Similar cartridges 4 See also 5 References 6 External linksDevelopment EditIntroduced by the Federal Cartridge company now known as Federal Premium Ammunition the 327 Federal Magnum was an attempt to improve on the 32 H amp R Magnum introduced in 1984 Like the 32 H amp R the 327 Federal is a lengthened version of the original 32 S amp W cartridge which dates back to 1878 In 1896 the 32 S amp W Long was introduced which generated slightly higher velocities The introduction of the 32 H amp R increased pressures from 15 000 psi to 21 000 CUP giving velocities of approximately 1 200 ft s 370 m s 3 Based on the 32 H amp R Magnum with a 1 8 inch longer case a strengthened web at the base of the case thicker case walls and different heat treatment and metallurgy the 327 Federal can be loaded to much higher pressure levels 45 000 psi 310 000 kPa than its predecessor 21 000 CUP 4 The 327 s actual bullet diameter is 312 in 7 92 mm and achieves muzzle velocities up to 1 400 ft s 430 m s with 100 gr 6 5 g 0 23 oz bullets and up to 1 300 ft s 400 m s with 115 gr 7 5 g 0 26 oz bullets when fired from the 3 1 16 in 78 mm barreled Ruger SP101 revolver 5 While perceived recoil exceeds that of the 32 H amp R revolvers in 327 Federal are much easier to control than equivalent models chambered in 357 Magnum Comparing the two calibers Chuck Hawks says There is no doubt that for most shooters the 357 Magnum produces uncomfortable recoil and muzzle blast 6 7 The 327 s recoil energy is 3 08 ft lbf 4 18 J for an 85 gr 5 5 g 0 19 oz jacketed hollowpoint JHP load 5 62 ft lbf 7 62 J for the 115 gr 7 5 g 0 26 oz JHP and 5 58 ft lbf 7 57 J for the 100 gr 6 5 g 0 23 oz softpoint SP For comparison the figures are 1 46 ft lbf 1 98 J for an 85 gr 5 5 g 0 19 oz 32 H amp R Magnum load and 7 22 ft lbf 9 79 J for a 125 gr 8 1 g 0 29 oz 357 Magnum load 6 7 Firearms chambered for the 327 Federal Magnum EditRevolvers in 327 Federal Magnum were initially offered by Charter Arms Taurus Ruger and Freedom Arms with Ruger s SP101 originally selected as the development platform for the new cartridge 4 Freedom Arms made a single action design as did U S Fire Arms with its eight shot Sparrowhawk Ruger offered the double action six shot SP101 and seven shot GP100 and the full sized single action eight shot Blackhawk chambered in the caliber 8 A version of the Ruger SP101 with a 3 1 16 barrel was released in January 2008 9 10 In late 2014 Ruger introduced the smaller framed Ruger Single Seven a seven shot single action revolver based on the Single Six 11 In March 2015 Ruger re introduced the SP101 in 327 Federal Magnum featuring fully adjustable sights and a longer 4 2 inches 110 mm barrel 12 In September 2015 Ruger also introduced the LCR a double action only six shot revolver with a polymer subframe 13 as well as the later LCRx 14 In early 2017 Henry Repeating Arms announced production of four new lever action long guns a rifle and a carbine each available with its receiver manufactured from either steel or hardened brass with shipping scheduled to begin in March 15 Hawks suggests that lever action carbines in 327 Magnum will make excellent fun to shoot centerfire rifles for hunting javelina jackrabbit and coyote he also notes that revolvers with six to eight inch barrels and adjustable sights would be excellent hunting handguns for varmints and small predators as well as offering flat shooting protection from two legged predators in the field 6 From left to right 32 Short 32 ACP 32 S amp W Long 32 H amp R Magnum and 327 Federal MagnumIn early 2022 Taurus released the Taurus 327 small frame revolver 16 Similar cartridges EditThe 327 Federal Magnum provides performance similar to the high velocity rifle loadings of the old 32 20 Winchester though these velocities are achieved in a much shorter revolver barrel thanks to a much higher pressure ceiling for the 327 6 17 Another similar cartridge is the 30 Carbine which has been offered in Ruger s single action Blackhawk revolver line since 1968 18 However the 327 Federal Magnum has a higher maximum pressure 45 000 psi than the 30 Carbine 40 000 psi 7 17 Gunsmiths working with Ruger and Freedom Arms have offered custom conversions of single action 32 H amp R Single Six and Freedom Arms revolvers to 327 Federal Test results from the long barreled guns showed even higher velocities than the 30 Carbine along with excellent accuracy 19 See also Edit8 mm caliber List of handgun cartridges Super magnum Table of handgun and rifle cartridgesReferences Edit 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 Bench Tests of the 327 Federal Magnum Mann Richard A 17 December 2018 Is The 327 Federal Magnum The Best All Purpose Magnum Gun Digest Retrieved 20 February 2019 a b Pearce Lane Reloading the 327 Federal Magnum Shooting Times Magazine 4 January 2011 Ballistics By The Inch 327magnum results a b c d Chuck Hawks First Look 327 Federal Magnum Revolver Cartridge a b c SAAMI Pressure Specs Archived from the original on 28 September 2007 Ruger Offers New Model Blackhawk and GP100 Chambered in 327 Federal Magnum Retrieved 4 January 2010 Federal Premium and Ruger Introduce New Revolver Cartridge the 327 Federal Magnum Archived from the original on 22 January 2008 Retrieved 27 November 2007 Dick Metcalf Lethal Combination Archived from the original on 31 August 2009 Retrieved 27 November 2007 Sturm Ruger amp Co Inc Ruger SP101 Double Action Revolver Archived from the original on 15 March 2015 Retrieved 30 March 2015 Ruger LCR 327 Federal Magnum press release Retrieved 28 September 2015 Ruger Introduces Four New LCRx Revolvers The Firearm Blog 13 October 2017 Retrieved 5 October 2019 New for 2017 www henryusa com Taurus 327 Federal Magnum DA SA Revolver www taurususa com Retrieved 15 February 2023 a b Frank C Barnes ed Stan Skinner 2003 Cartridges of the World 10th Ed Krause Publications ISBN 0 87349 605 1 Ruger Revolver Serial Number History Sturm Ruger Jeff Quinn Freedom Arms Model 97 amp Single Action Service Custom Ruger Revolvers Chambered for the New 327 Federal Magnum GunBlast com External links EditRuger Blackhawk 327 Federal 5 5 8 shot Revolver Ballistics By The Inch 327 Federal Magnum Results Retrieved from https en wikipedia org w index php title 327 Federal Magnum amp oldid 1168286887, wikipedia, wiki, book, books, library,
