The common .375 CheyTac 292 mm (1:11.5 in) rifling twist rate also has to be tightened to stabilize very long projectiles. The .50 BMG has a higher initial muzzle energy of 11,200 ft. lbs. Berry's Corn Media Shop Now . ... Posts: 4,814. The .408s 419grain projectile will defeat any material that the .50 BMG can defeat https://www.alloutdoor.com/2020/10/19/cheytac-precision-rifles/#disqus_thread. regulated countries are currently (2016) proof tested at 550.00 MPa (79,771 psi) PE piezo pressure. Improvement beyond this standard while still using standard .375 CheyTac brass is possible, but the bullets have to be very long and the normal cartridge overall length has to be exceeded. The bullpup design means the action is behind the trigger. [citation needed] It would appear that Mr. Möller did not test this projectile prior to public release whereby the dynamic instability would have been discovered. In modern solidhead cases, the hardness of the brass is the major factor that determines a case's pressure limit before undergoing plastic deformation. The very-low-drag bullets are made by Rocky Mountain Bullets in Philipsburg, Montana and have a rebated boattail and a claimed ballistic coefficient (G1 BC) of 0.874.[8]. As with all bullpups, this allows for a shorter overall length, without having to reduce barrel length. Due to this, CheyTac USA added .375 CheyTac to the factory chamberings for the Intervention. Good 1 person hiking tent recommendations. One noted downside to the use of solid mono metal projectiles is that they tend to increase the fouling left in the rifle barrel after they are fired. Does any one have any experience with a .408 Chey Tac? regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. Im sorta the one who makes the final decision so i need some help. For a typical .375 CheyTac chambered gun, shooting 24.30 gram (375 gr) Lost River Ballistic Technologies bullets (claimed G1 BC = 1.02) at 930 m/s (3050 ft/s) muzzle velocity, the supersonic range would be 2230 m (2440 yd) under International Standard Atmosphere sea level conditions (air density ρ = 1.225 kg/m3). [7] The factory claims their diameter is accurate to "one 50 millionth" but does not provide a unit of measurement with this claim, making it somewhat vague. The 408 is slightly heavier by 19 grains, 250 ft/s slower. 01-05-2005, 04:54 PM #3: 50 Shooter . Mathematically you are at a great disadvantage trying to achieve balanced flight with a lead core non mono metal bullet. Most .408 CheyTac factory ammunition uses solid projectiles or bullets rather than jacketed lead-core bullets, which are common to most other rifle bullets. One of the disadvantages to these old cartridge cases intended for firing cordite charges instead of modern smokeless powder is the thickness of the sidewall just forward to the web. The Intervention rifle is chambered in the .408 Cheyenne Tactical cartridge. The patent does not account for normally occurring differences in air density. .408 Cheyenne Tactical [Source] • [Talk] This cartridge was designed specifically for the market to the military in hopes it would be both a cost-effective and ballistically superior round to the existing military long-range cartridges; the .338 Lapua Magnum and .50 BMG . Berry's Walnut Media Shop Now . the 408 has more energy and accuracy out of the 3 but its only for killing human targets. The .408 Cheyenne Tactical designated 408 Chey Tac (10.36×77mm) by the C.I.P. Its full name is 408 Cheyenne Tactical. More about balanced flight can also be found in the CheyTac Information Papers.[11]. Reply. Because the .408 CheyTac offers a large and sturdy, pressure resistant cartridge case it has become quite popular among wildcatters. .408 Cheyenne Tactical. The .408 Cheyenne Tactical (or .408 CheyTac) is a specialized rimless, bottlenecked, centerfire cartridge for military long-range sniper rifles that was developed by Dr. John D. Taylor and machinist William O. Wordman. It implies that among several other preconditions the rifle barrel has to have specific rifling dimensions to achieve a desired amount of axial air drag on the bullet's surface, which reduces the bullet's spin rate to achieve balanced flight. Lost River Ballistic Technologies also designed a 305 grain (19.76 g) bullet for the Battlefield Domination Round (BDR). The Intervention is basically a .50 Windrunner that’s been reduced in size by 33%. But i have found that.408 Chey-Tac and.416 Barrett are the 2 best long range "tactical" rounds out there followed by the.50 BMG. This is hard to achieve for small arms projectiles. They created a hardness distribution ranging from the head and web (hard) to the mouth (soft) as well as a strengthened (thicker) case web and sidewall immediately forward of the web. My grandpa builds his own bullets so they wont cost as much. By blowing out .408 CheyTac factory cases the wildcatter generally hopes to gain extra muzzle velocity by increasing the case capacity of the factory parent cartridge case by a few percent. Such rifles are ordered by long-range accuracy oriented shooters and built by specialized, highly skilled gunsmiths and can cost thousands of dollars. Other manufacturers, such as Rocky Mountain Bullet Company/Vigilance Rifles, GS Custom Bullets, Lehigh Bullets & Design, Lutz Möller and TTI Armory have developed lead-core or mono metal very-low-drag projectiles for the .408 CheyTac. My grandpa wants to get an exotic gun and he is debating between a 50 or a 408 and he already has a 338 lapua. Dean Michaelis has written a shooter’s report on the .408 Cheytac M200 "Intervention" here. Posts: 24. Jul 1, 2012 ... Noreen ULR Extreme 50 BMG, 50 BMG barrel 408 Chey Tac for sale, BN408 Chey Tac Semi Auto, Noreen BN408 . Jul 28, 2012 - THOR Global Defense Group have teamed up with EDM Arms to develop the THOR XM-Series, a take-down rifle chambered in the .408 Chey-Tac cartridge and based on the EDM Windrunner action. The ULR is dependable and extremely accurate at long range. My grandpa wants to get an exotic gun and he is debating between a 50 or a 408 and he already has a 338 lapua. » 408 cheytac vs 375 cheytac | The music of Dik Cadbury, Dick Cadbury, Richard Cadbury and friends This website uses cookies. In 2008 factory loaded .408 CheyTac 420-grain (27.22 g) lead core bullets with 955 copper jackets became available. Altho the brass I've seen for the .50 BMG generally ran 1 to 2 dollars each, depending on whether it was new or used... And, I'd bet the brass for the Chey-Tac would be at least 2 bucks each, and probably more................. Of course if a person can afford to spend a few thousand dollars to have a rifle built in either caliber, then paying a couple of bucks each for brass would probably not be a significant problem. From a purely practical standpoint you would most likely find the brass (for loading/reloading your own) much easier to come by, and probably less expensive for the .50 BMG, simply because at present it is more common. Get your answers by asking now. When built to expectation such rifles are very accurate—0.5 MOA or better consistent accuracy for a particular rifle optimized ammunition is considered normal. When the sidewall resists the outward expansion against the chamber, the pressure stretches the case thereby increasing its length resulting in the sidewall becoming thinner at that stretch point. The length of the circular precludes any style of semi auto configuration. It is chambered for both the .408 Chey Tac or .375 Chey Tac (both custom proprietary calibers created by Cheyenne Tactical). In C.I.P. The .408 Cheyenne Tactical is based on the .400 Taylor Magnum, which itself is based on a modified .505 Gibbs, necked down to 0.408 inches (10.36 mm). This bullet has since exhibited dynamic stability problems and is no longer produced. The .408 Cheyenne Tactical is a specialized rimless, bottle-necked, center fire cartridge for military long-range sniper rifles that was developed by Dr. John D. Taylor and machinist William O. Wordman. What is the best way to protect from groin shots in paintball ? The .375 Viking bullet had an overall length of 70 mm (2.756 in) and derived its anticipated low drag from a radical LD Haack or Sears-Haack profile in the bullet's nose area. The M408 rifle system is built by a collaborative effort of the original design, development and production team of the M200 .408 We are pleased to offer the full line of THOR 408 and 375 rifles with quick turnaround and short lead times for custom builds. The projectile has a mass of 370 grains (24.0 g). Death toll rises for World Cup workers in Qatar, Kaley Cuoco recalls moment co-star quit 'Big Bang', AOC joins backlash over Biden child migrant camp, Woman's tattoo takes on new meaning amid pandemic, Billionaire on why Costco presents danger to Amazon, Olympian McKayla Maroney ensnared in mystery ‘cult’, Sheriff: Tiger Woods crash ruled 'purely an accident', Christie turns tables on Dems: 'Science is on our side', Experts give long-term effects of COVID-19 a name, West Coast-based electronics giant calling it quits, 'Home Improvement' star enters domestic violence plea. To achieve balanced flight the linear drag has to be balanced with the rotational drag to keep the very fine nose (meplat) of the bullet pointed directly into the oncoming air. I guess I would be interested in a nose to nose comparison of both cartridges (.50 BMG vs .408 CT). There were projectiles produced prior to the patent that remain stable through the transonic flight regime. Anyone have that kind of experience? .408 Cheyenne Tactical . It weighs 21 lbs, as opposed to 32 lbs for the .50 BMG rifle. The test shoot was conducted at South Creek Flats, Idaho. Join Yahoo Answers and get 100 points today. Would that work? The Cheyenne Tactical M200 Intervention is a high end sniper rifle (usually referred to as the CheyTac M200). In 2007 Dr. John D. Taylor designed a new class of armor-piercing projectiles known as the .408 CheyCorey and in this configuration, it outperforms the .50 AP (both black and silver tips) cartridge against armor steel and titanium. A muzzle brake can only do so much. certified and became an officially registered and sanctioned under the 375 Chey Tac designation.[6]. The .408 Cheyenne Tactical has 10.32 ml (159 grains H2O) cartridge case capacity. The .408 Cheyenne Tactical chambering is offered for these factory rifles: Several high quality large tactical and match (semi) custom bolt actions were designed for the .408 Cheyenne Tactical cartridge and were becoming available as of 2007. This is a consequence of the spin deceleration and forward deceleration of the projectile being similar enough not to cause undesirable precession and yaw during the transonic flight phase. The cartridge delivers accurate (sub-MOA) performance from a sniper rifle. Ballistic coefficient of the Jamison 419-grain (27.2 g) projectile, Balanced-flight/controlled-spin projectile, Learn how and when to remove this template message, Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives, Fixed drag curve models generated for standard-shaped projectiles. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings the .408 Cheyenne Tactical can handle up to 440.00 MPa (63,817 psi) Pmax piezo pressure. What does it mean when you hear a whistling sound at night? This was established in February 2009 by Terry Holstine, an Oklahoma State Trooper, who is the only person to ever have fired the Viking. ), and can be used to engage targets out to 2500 yards. The chamberings currently available from Desert Tech are .375 Cheyenne Tactical (CheyTac), .408 CheyTac, .416 Barrett and .50 BMG. by | Feb 19, 2021 | Ohne Kategorie | 0 comments | Feb 19, 2021 | Ohne Kategorie | 0 comments cartridge dimensions. 11,200 ft. lbs. Esta aquí: Home / Uncategorized / 408 cheytac vs 416 barrett. pressure to certify for sale to consumers. He also has the liscense to make the two rounds. 408 cheytac vs 416 barrett. Last edited: Jul 1, 2012. Im sorta the one who makes the final decision so i need some help. He also has the liscense to make the two rounds. The .408 Cheyenne Tactical Cartridge is 33% lighter than the .50 BMG cartridge (bullet weight is 419gr. CheyTac LLC claims that the 26.95 gram (419 gr) projectile has a supersonic range of 2,200+ yards (2,011+ m) at 'standard air conditions'. It should result in very little precession and yaw at extreme range and allows accurate flight back through the transonic region. The Balanced Flight/Controlled Spin Projectile bullet patent has been questioned/disputed by the German physicist Lutz Möller. Americans would define the shoulder angle at alpha/2 ≈ 22.13 degrees. Practically there can be some muzzle velocity gained by this method, but the measured results between parent cartridges and their "improved" wildcat offspring is often marginal. Ranges past 700 yards are the realistic engagement-range for anti-material rifles. Currently (2009) these projectiles are produced by Jamison International, where they are turned on Swiss-type CNC lathes from solid bars of proprietary copper nickel alloy. What does freefalling on a skydive feel like? They look like a good substitute for a .50. My grandpa builds his own bullets so they wont cost as much. "The.408 Chey Tac (10.4×77mm) as it is commonly known, or by its full name,.408 Cheyenne Tactical, is a counter sniper rifle cartridge, developed by Dr. John D. Taylor and machinist William O. Wordman. 408 cheytac vs 416 barrett. It without problems would not fit into the grip of the gun. The above variations can be explained by differences in the ambient air density used for these BC statements or differing range-speed measurements on which the stated G1 BC averages are based. 375 Cheyenne Tactical #150 (50 BMG/CheyTac) #150 (50 BMG/CheyTac) SKU: 50010 ... .50 BMG.375 Cheyenne Tactical.408 Cheyenne Tactical.416 Barrett.50 DTC Europ.505 Gibbs; You May Also Be Interested In. [5], The wildcat status of the .375 CheyTac ended in 2017 when it got Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (C.I.P.) It is called the caliber 408 Cheytac \ .338lm \ .300wm. Extreme Firearms claimed the G1 BC of the same .408 CheyTac projectile to average 0.945 to 2000 meters and it drops to the low 0.900s to 2800 meters. By browsing the site you are agreeing to our use of cookies. It also breaks down easily for transportation. At 700 yards however, the remaining energy of the .408 is higher than that of the .50 … MEANT 408 instead of 406 . It is specifically chambered in either .408 Chey Tac or .375 Chey Tac ammunition. You are left with either a revolver or single shot handgun. The .408 Cheyenne Tactical designated 408 Chey Tac (10.36×77mm) by the C.I.P. As .375 CheyTac runs about $7.10 per cartridge and .50 BMG is both far more common, cheaper, and come in wider array of bullet types, the conversion … The CheyTac Intervention is an American bolt-action sniper rifle manufactured by CheyTac inc, which can also be classified as an anti-materiel rifle.It is fed by a 7-round detachable single-stack magazine (an optional 5-round magazine is also available). The round was designed with a possible military need for a cartridge for anti-personnel, anti-sniper and anti-materiel roles with a (supersonic) precision range of 2,200 yards (2,000 m). The BDR is loaded with a 305 grain (19.76 g) bullet (claimed G1 BC = 0.612) and is intended for short and medium range application using the point-blank range aiming method.[11]. Lapua Ltd. solved this problem when they used the .416 Rigby as the parental case to the .338 Lapua Magnum. The oldest factory .408 CheyTac ammunition uses bullets designed by Warren S. Jensen and originally produced by Lost River Ballistic Technologies. Only expert marksmen can make use of this extreme accuracy potential. (Lawton Rifle Barrels), This page was last edited on 27 January 2021, at 09:23. Cheyenne Tactical claimed a Doppler radar-measured G1 ballistic coefficient (BC) for the Lost River Ballistic Technologies/Jamison International 419-grain (27.15 g) bullet of roughly 0.934 and a stated BC for the 305-grain (19.76 g) bullet of 0.611,[9] though these numbers have been disputed by a number of knowledgeable sources. Reply. Since the bullets are harder and more abrasive than the gilding metal jackets of normal jacketed bullets, they are made slightly "undersized" so that they may be gripped effectively by the lands of the barrel's rifling. Are pull on boots good for hiking in forest? The .408 CheyTac serves as the parent for several other second-generation wildcat cartridges. Nonetheless, the Thomson Contender type of handgun would commonly provide the nice hazard of success with the massive circular. The Thor XM408, chambered in the extremely powerful .408 Chey Tac cartridge, offers shooters a long-range precision rifle with 2,000-yard capability in a package that weighs less than comparable .50 BMG rifles. Jamison International states the G1 BC of this bullet on their website currently (2009) at 0.940. During ignition, the cartridge's base, forward to the bolt face, is not supported. Still have questions? Some more explanation about the transient nature of a projectile's G1 BC (it rises above or gets under a stated average value for a certain speed-range regime) during flight can be found at the external ballistics article. The new .408 AP round is a 370-grain projectile with a standard velocity of 3100 fps with capabilities that are superior to the M2 ball and the M8 .50 caliber due to its efficiency and the high energy of its patent pending lathed turned projectile. Ex: skydiving, whitewater rafting? vs. the .408’s energy of 7,700 lbs. A. Augustus Well-Known Member. .408 Cheyenne Tactical maximum C.I.P. This cartridge was created to improve the performance of snipers of the United States of America. The .408 Cheyenne Tactical became officially registered by the Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (C.I.P.) .408 Cheyenne Tactical. The original basis for the cartridge was the old .505 Gibbs big-game hunting round, but it has been much modified as well as necked down. Lost River Ballistic Technologies (statement of Mr. Warren Jensen) stated that "the .408 CheyTac is the first bullet/rifle system that utilizes what they call a balanced flight projectile. I know that the .408 cheyenne tactical(chey tac) holds the world record for putting a 16 inch group at 1.32 miles so its very fking accurate and im not sure about the .50 so i need some help. [2] In 2021 it was deregistered by the C.I.P. The main parameter for achieving stable transonic transition is controlling the drag coefficients (Cd) and forward velocity loss around Mach 1 and to a lesser degree controlling the spin deceleration. In other words, any bullet with appropriate drag behaviour around Mach 1 and mass (distribution) will do exactly what the balanced flight projectile patent states. vs. the 408s energy of 7,700 lbs. List of individual weapons of the U.S. Armed Forces, "A Ballistic Discussion - A Discussion with Lost River's Warren Jensen about Ballistic Coefficients, Drag Curves and Calculations", Lutz Möller's .408 Cheyenne Tactical Bullets Page, Lapua product brochure .338 Lapua Magnum ammunition, .408 Cheytac Intervention at World of Firearms, .408 CheyTac Trip Report, Shooters' Observations and Test Results by Dean Michaelis, Controlled spin projectile at Google Patents, Quo Vadis GmbH webpage on the .408 Chey Tac (including images), https://en.wikipedia.org/w/index.php?title=.408_Cheyenne_Tactical&oldid=1003081543, Weapons and ammunition introduced in 2001, Weapons and ammunition introduced in 2013, Articles needing additional references from July 2020, All articles needing additional references, Articles with unsourced statements from April 2014, Creative Commons Attribution-ShareAlike License, Lawton Machine LLC. Will help this thread and me. THOR Global Defense Group have teamed up with EDM Arms to develop the THOR XM-Series, a take-down rifle chambered in the .408 Chey-Tac cartridge and based on the EDM Windrunner action.The.408 Cheyenne Tactical is a long range sniping cartridge that in terms of performance cuts the difference between the .338 Lapua Magnum and .50 BMG.. THOR XM-Series broken down However, field testing of this projectile proved it to be completely unstable, and useless at any velocity, or range. For a typical .408 CheyTac chambered gun, shooting 27.15 gram (419 gr) Lost River Ballistic Technologies bullets (claimed G1 BC = 0.940) at 884 m/s (2900 ft/s) muzzle velocity, the supersonic range would be 1930 m (2110 yd) under International Standard Atmosphere sea level conditions (air density ρ = 1.225 kg/m3). [10] The .408 CheyTac projectile remains supersonic up to 2,300 yards (2,100 m) according to Extreme Firearms. Joined Jan 6, 2008 Messages 436. All sizes in millimeters (mm). During ignition, the cartridge's base, forward to the bol… The BC changes during a projectile's flight and stated BC's are always averages for particular range-speed regimes. What is your opinion on 375 vs 408. It is believed that the 408 caliber is on a par with the best ammunition, such as .338 Lapua Magnum and .50 BMG. One of the disadvantages to these old cartridge cases intended for firing cordite charges instead of modern smokeless powderis the thickness of the sidewall just forward to the web. Rifles chambered for this wildcat cartridge, with a cartridge overall length of 119 mm (4.685 in), were to have been equipped with custom made 762 mm (30 in) long 203 mm (1:8 in) twist rate barrels.[13]. The common rifling twist rate for this cartridge is 330.2 mm (1 in 13 in), 8 grooves, Ø lands = 10.16 mm (0.400 in), Ø grooves = 10.36 mm (0.408 in), land width = 2.57 mm (0.1 in) and the primer type is large rifle. on 15 May 2013 ending its status as a wildcat cartridge. [ARCHIVED THREAD] - 50 BMG vs 416 Barrett and 408 Chey Tac. With the .408 CheyTac as the parent case wildcatters have created .338 (.338 Little Dave (8.5×55mm),[3] .338 Snipe-Tac,[4] .338/408 Baer), .375 (.375 CheyTac, .375-.408 CheyTac, .375 Snipe-Tac, .375 SOE), .416 (.416 PGW), and .510 (.510 Snipe-Tac) caliber variants. The rotational mass/surface area ratio is too high. not really for anything else but it can at under 1000 yards (steel, light vehicles). Fixed drag curve models generated for standard-shaped projectiles or BC modelling are the most common method used but not an advanced nor desirable method to model the long range flight behavior of projectiles. [2] It is offered as a competitor to the most common military NATO long-range service cartridges such as .338 Lapua Magnum and the .50 BMG. I believe the recoil would wreck bones in the hand. The .408 Cheyenne Tactical is based on the .400 Taylor Magnum, which is based on a modified .505 Gibbs, necked down to 0.408 inches (10.36 mm). According to the patent a projectile engraved and launched in accordance with the patent should decelerate from supersonic flight through transonic to subsonic in a stable and predictable manner effective to a range beyond 3000 yards (2,743 m). This inevitably reduces the seal of the bullet in the barrel, allowing hot gunpowder gases to reach the sides of the projectile, vaporizing some of the material and depositing it in the bore. In the .408 CheyTac cartridge casing design particular attention was directed toward thickening and metallurgically strengthening the case's web and sidewall immediately forward to the web to accommodate high chamber pressures.
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