• If your AR-15 closes on a NO-GO gauge, take it to a gunsmith to correct the headspace before you shoot it. Otherwise, reassemble your rifle (don't forget to reinstall the extractor and ejector on the bolt), take it to the range - and happy shooting!
      • AK cast trunnion fail on RAS47 - Boom! Home of AKOUL 47-74; ... I have seen of this sort of stress failure occurring in some of the Serbian N-PAPs. ... If this rifle ...
      • Here's one for the AR-15 experts. I'm really curious as to what you think happened. Was shooting at my club range a day or so ago, and next to me were a couple guys shooting a bullet-buttoned AR-15 and a couple different AK's. After about half an hour of shooting, the guy on the AR complained to his buddy about "headspace issues".
    • May 16, 2012 · In cases involving drunken driving, where the blood alcohol content (BAC) of the driver is requested, defense attorneys have been known to challenge what’s called the headspace analysis. Headspace gas chromatography (GC) is a way of separating volatile material from a liquid or solid prior to analysis.
      • Aug 19, 2013 · So, I recently took delivery of a Hornady Lock-N-Load Headspace Guage set to help me out with measuring the headspace of my 5.56 and .223 reloads more precisely. My goal: take once-fired cases from an unknown group of rifles (say military or civilian ranges) and process the cases such that they w...
      • Jan 15, 2018 · On an AR-15 rifle, there are a couple of things you need to do before checking the headspace. First, clean the chamber and bolt thoroughly, so any built-up carbon or grime doesn’t give you false ...
      • Jan 15, 2018 · On an AR-15 rifle, there are a couple of things you need to do before checking the headspace. First, clean the chamber and bolt thoroughly, so any built-up carbon or grime doesn’t give you false ...
      • Failure to feed, AR15 DPMS upper I bought a DPMS upper at an Ohio Gun Collectors Show last year and cannot get ammo to feed into the chamber. It is a stainless 20" bull barrel on a flat top upper with a free float handguard.
      • I just got the 3 headspace gauges for my Spanish Mauser 1916 7MM Mauser. I ordered the CIP ones but I now see there are SAAMI ones. I will be shooting Privi modern ammo.
      • I've read about the need to check headspace when matching a bolt to a barrel when building an AR-15. I know about tolerance stackup. I am an engineer and scientist but I am still learning the finer points of AR-15 design, construction, et cetera.
      • The military arsenals accomplish this using different techniques and components—including different primer sensitivity specifications—from their commercial counterparts. CCI makes rifle primers for commercial sale that matches military sensitivity specs that reduce the chance of a slam-fire when other factors go out of control*.
      • Find helpful customer reviews and review ratings for Mosin Nagant Headspace Gauges - 7.62x54R 3 Pc Set - Go, No-go, Field by Firewerks at Amazon.com. Read honest and unbiased product reviews from our users.
      • “Headspace” refers to the total length of the chamber of a firearm in its locked position. It is an absolutely critical dimension for the safe and effective operation of a firearm. Typically this distance is measured from a datum on the shoulder of the case (common for rifles) or the front portion of a case (common for handguns) to the face of the bolt where cartridge sits. For obscure ...
      • Sep 06, 2019 · Failure to cycle is lack of gas--or maybe just using an improper buffer configuration, like you are. You need a CARBINE buffer and a CARBINE spring to test your upper. If the rifle still won't cycle with a carbine buffer, check your gas block.
    • Jan 08, 2018 · Excessive headspace issues can include: light primer strikes, failure to fire, bulged/blown cases, case separations, split shoulders, or unseated primers after firing. Case ruptures caused by excessive headspace can lead to catastrophic failures causing serious injury. That is why headspace is such an important measurement.
      • I load for two AR15 rifles and a bolt action Savage .223 using Lake City brass, my biggest complaints are necks that are not a uniform thickness and loose primer pockets after the first firing. Again if you have the Hornady cartridge case headspace gauge you will only ever need just that one Hornady gauge. Below a Colt Field gauge, 1.4736
      • Thompson / Center Arms Found at Fault in Catastrophic Gun Failure On September 1, 2005, I was severely injured by a catastrophic gun failure. My face was permanently disfigured and sight in my right eye was lost forever. I was shooting with the Thompson/Center Encore Rifle. It blew apart because of a defect in its design.
      • Either way, if the failure above persists with brass ammo, or the other failure occurs with either ammo give us a call at 855-808-1888 and we will correct it under warranty. How does an AR15 operate? AR15s work like this: When the rifle is fired, hot gases from the fired round are forced up through a port in the barrel where the gas block is.
      • Sep 23, 2010 · On a rimmed cartridge like the .30-30 or .303 British, the headspace is the gap for the rim. On a belted magnum, headspace is the gap for the belt. Since not every rifle or cartridge can be made to exact dimensions, with perhaps the best custom rifles being one exception, headspace is deemed to be correct if it is within a certain range.
      • (too much headspace) The Bolt would not close on the Field Gauge. I tried both bolts in my Long Rifle with the go. Both closed. I asked this question on here before and someone said yes, but should I be using different gauges on a 5.56 barrel? The weird part is that my first rifle failed the go with using the same gauges.
      • Aug 19, 2013 · So, I recently took delivery of a Hornady Lock-N-Load Headspace Guage set to help me out with measuring the headspace of my 5.56 and .223 reloads more precisely. My goal: take once-fired cases from an unknown group of rifles (say military or civilian ranges) and process the cases such that they w...
    • Aug 25, 2018 · My buddy Dale from Little Crow Gunworks demonstrates how to properly check headspace on an uninstalled AR-15 barrel. This is the ideal way to check headspace since you do not have to completely take apart your bolt. Dale is the inventor or the R.P.P Roll Pin Pusher AR-15 Tool as well as the W.F.T World’s Finest Trimmer.
      • Thompson / Center Arms Found at Fault in Catastrophic Gun Failure On September 1, 2005, I was severely injured by a catastrophic gun failure. My face was permanently disfigured and sight in my right eye was lost forever. I was shooting with the Thompson/Center Encore Rifle. It blew apart because of a defect in its design.
      • Installing a pre-fit barrel on a Remington 700. In this post we are going to look at installing a pre-fit barrel on a Remington 700 action. This is the third post on a similar topic. In previous posts, we looked at using a REMage conversion barrel and short chambered barrels. Each of these methods has it’s own advantages and disadvantages.
      • I used a lot of BR4 when I was shooting group with a 6BR about 20 years ago and don't recall ever having a problem unless I had a gun or headspace issue, which did happen a couple times. Keep in mind that the BR4 has about the hardest cup of the SR primers, so firing pin energy & close headspace fit are very important when using them.
      • After doing some searching online i found the following article on soldiersystems.net about a duty rifle in the northeastern states that had a catastrophic failure, and the pictures mirrored my own remarkably close, the damage to the bolt, extractor, carrier, upper receiver, and right down to the damage to the separated case head all looked identical to what happened to my rifle.
      • AR-15 Failure Points. ... A bolt that fails to headspace can create a very dangerous condition and should not be used with that barrel. Those are the items most easily replaced if broken, worn out ...
      • I had a friend down in Lawton that probably wish he had a headspace gauge. His AR did indeed blow up in his face when he was shooting it. Like you said, little here little there in just the right directions and catastrophic failure. Friend was lucky he had safety glasses on. The hole upper disintegrated, pieces everywhere.
    • Huge Selection of AR15 Uppers, AR15 Parts, Ammunition, Handguns, Rifles, Shotguns and Shooting Accessories at Great Low Prices
      • Jun 27, 2018 · Headspace is the measurement from the slope of the shoulder to the base of the cartridge or the corresponding dimensions in the rifle chamber. Excessive chamber headspace allows the cartridge to be farther forward in the chamber, or the case might move forward when struck by the firing pin.
      • In summary, headspace is very easy to understand and correct following our procedures. Failure to keep headspace within a workable range is simply money down the drain! There is no reason whatever to sell or otherwise get rid of a barrel that is not performing due to headspace issues.
      • Although we emphasize the beloved AR15 or Black Rifle as it is also known, you will find this site open to numerous firearms and firearms related issues. AR15Armory.com provides a work and family friendly internet firearms forum where gun enthusiasts may exchange knowledge and ideas on firearms of all sorts.
      • Excessive headspace will cause the brass to stretch more than it should and increases the likelihood of a case failure. Insufficient headspace may contribute to slam fires, light strikes on primers, misfires and more wear on parts due to the additional force needed to chamber the rounds. What is headspace?
      • If a rifle closes on a Maximum length gauge, its chamber is dangerously close to, or longer than, NATO's maximum chamber length.The chamber should not close on the MAX gauge. NATO MIN rifle chamber gauge checks to see that the rifle will accept the longest (headspace dimension) NATO ammunition cases.
      • If a rifle closes on a Maximum length gauge, its chamber is dangerously close to, or longer than, NATO's maximum chamber length.The chamber should not close on the MAX gauge. NATO MIN rifle chamber gauge checks to see that the rifle will accept the longest (headspace dimension) NATO ammunition cases.
      • Here's one for the AR-15 experts. I'm really curious as to what you think happened. Was shooting at my club range a day or so ago, and next to me were a couple guys shooting a bullet-buttoned AR-15 and a couple different AK's. After about half an hour of shooting, the guy on the AR complained to his buddy about "headspace issues".
      • Signs of too little case headspace? This is a discussion on Signs of too little case headspace? within the Ammunition forums, part of the M14 M1A Forum category; I learned the hard way the importance of case headspace in .308, was resizing with too high headspace and brass was getting stuck in M1A. ...
      • Oct 20, 2011 · Now pull back the BCG and insert the Field Headspace Gauge into the chamber. **Carrier should NOT close completely** If carrier closes completely on Headspace Gauge, then the Headspace is NOT correct. If the bolt does NOT cam into position the rifle DOES NOT have excessive headspace. Again, the bolt SHOULD NOT close on a Field Headspace Gauge.
    • If your AR-15 closes on a NO-GO gauge, take it to a gunsmith to correct the headspace before you shoot it. Otherwise, reassemble your rifle (don't forget to reinstall the extractor and ejector on the bolt), take it to the range - and happy shooting!
      • After doing some searching online i found the following article on soldiersystems.net about a duty rifle in the northeastern states that had a catastrophic failure, and the pictures mirrored my own remarkably close, the damage to the bolt, extractor, carrier, upper receiver, and right down to the damage to the separated case head all looked identical to what happened to my rifle.
      • Since the barrel extension (feed ramps) and gas port need to be oriented in given positions and the barrel extension is threaded on it invloves lots of hand fitting and machining to get them right. You then cut a new chamber in the barrel, measuring your headspace as you go with gauges and the bolt you are going to use for the rifle.
      • Oct 20, 2011 · Now pull back the BCG and insert the Field Headspace Gauge into the chamber. **Carrier should NOT close completely** If carrier closes completely on Headspace Gauge, then the Headspace is NOT correct. If the bolt does NOT cam into position the rifle DOES NOT have excessive headspace. Again, the bolt SHOULD NOT close on a Field Headspace Gauge.
      • Aug 19, 2013 · So, I recently took delivery of a Hornady Lock-N-Load Headspace Guage set to help me out with measuring the headspace of my 5.56 and .223 reloads more precisely. My goal: take once-fired cases from an unknown group of rifles (say military or civilian ranges) and process the cases such that they w...
    • Excessive Headspace: Excessive headspace in the reloading brass casing can lead to bulged cases or even outright failures - cracks, case head separation, and splitting of the case neck. It can also because light primer strikes, failure to fire, primers popping out of the primer pocket, and of concern to reloaders, shortened case life.
      • I've seen an adjustable rifle headspace gauge somewhere about 20 or 30 years ago. At a show maybe? The idea was to close the bolt on the gauge and adjust it to snug fit with a long shaft that went in through the barrel and turned an adjusting screw.
      • Aug 28, 2014 · anti seize grease for ar 15, ar barrel nut grease, ar15 barrel grease, barrel grease ar15, barrel nut grease ar15, best anti seize lubricant for ar-15, best grease for ar15 barrel nut, do you put anti seize on the barrel of ar15, lubricate threads torque ar barrel, no grease ar barrel install, should you grease a barrel nut on a ar15, what ...
      • (too much headspace) The Bolt would not close on the Field Gauge. I tried both bolts in my Long Rifle with the go. Both closed. I asked this question on here before and someone said yes, but should I be using different gauges on a 5.56 barrel? The weird part is that my first rifle failed the go with using the same gauges.
      • home > far-15 > upper parts > bolt, complete, usgi, hpt/mpi marked, ar-15 ... *barrels & bolts must be properly checked for headspace prior to use. failure to do so ...

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The SAE 9310 of the JP EnhancedBolt™ is a superior steel alloy in virtually every way compared to the C-158, whether in its resistance to structural failure or life expectancy, both of which far exceeding the Mil-spec. Just as with the transmission gears for Formula 1 racers which are also made from 9310, the operational demands of a bolt ... I had a friend down in Lawton that probably wish he had a headspace gauge. His AR did indeed blow up in his face when he was shooting it. Like you said, little here little there in just the right directions and catastrophic failure. Friend was lucky he had safety glasses on. The hole upper disintegrated, pieces everywhere.

Find helpful customer reviews and review ratings for Mosin Nagant Headspace Gauges - 7.62x54R 3 Pc Set - Go, No-go, Field by Firewerks at Amazon.com. Read honest and unbiased product reviews from our users. Jan 15, 2018 · On an AR-15 rifle, there are a couple of things you need to do before checking the headspace. First, clean the chamber and bolt thoroughly, so any built-up carbon or grime doesn’t give you false ...

A failure to feed occurs when, on the slide's forward stroke, the cartridge in the magazine does not full enter the chamber and the gun does not go into battery. There are three general types of failures to feed —nosedive jams, half-in, half-out jams, and failure to go fully into battery—each with its own distinctive causes and cures. Aug 06, 2014 · Pistols and straight walled rifle cases generally tend to operate at lower velocities and pressures, so their useful life will tend to be a bit longer. There is a process called annealing, where the case mouth and neck are heated and quenched, which will soften the brass to extend the life of your cases. AR 15 head space question. This is a discussion on AR 15 head space question within the M16 AR15 forums, part of the Rifle Forum category; I am putting together a XM177 clone with a bunch of old parts I have on hand and when I checked the head space the ...

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The recommendation is to conduct the headspace test with a stripped bolt (firing pin spring removed). You are correct -- the spring won't add to the camming action -- I was mixing up two separate thoughts as I typed Since the 1917 cocks on closing, you could have a difficult time detecting resistance in the headspace gauge. I've seen an adjustable rifle headspace gauge somewhere about 20 or 30 years ago. At a show maybe? The idea was to close the bolt on the gauge and adjust it to snug fit with a long shaft that went in through the barrel and turned an adjusting screw. After doing some searching online i found the following article on soldiersystems.net about a duty rifle in the northeastern states that had a catastrophic failure, and the pictures mirrored my own remarkably close, the damage to the bolt, extractor, carrier, upper receiver, and right down to the damage to the separated case head all looked identical to what happened to my rifle. I used a lot of BR4 when I was shooting group with a 6BR about 20 years ago and don't recall ever having a problem unless I had a gun or headspace issue, which did happen a couple times. Keep in mind that the BR4 has about the hardest cup of the SR primers, so firing pin energy & close headspace fit are very important when using them. Thompson / Center Arms Found at Fault in Catastrophic Gun Failure On September 1, 2005, I was severely injured by a catastrophic gun failure. My face was permanently disfigured and sight in my right eye was lost forever. I was shooting with the Thompson/Center Encore Rifle. It blew apart because of a defect in its design.

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With a rimmed case like the .303 the headspace is the thickness of the space between the bolt face & the rear chamber face occupied by the RIM of a loaded case exclusively. The measurements of ALL OTHER dimensions, while effecting case expansion & possible failure are chamber dimensions to be sure, but are NOT "Headspace". 1jz vs 2jz weight
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