If this is confusing, think of it this way. This mid- spec gun will have a 0.006 inch gap between the barrel hood and breech face, and the total fore-aft play (endshake) between the barrel and slide will be about 0.013 inch. I'd heard of this problem I finally I'm fairly positive that the extractor is not clocking. 1911 jcut in breechface, breech face, breech face gun, breech face of a pistol, breech face of a sig saur, gun force on breech face, is there such things a sbreech face on revolvers, pistol breech face, what is a breech face on 1911, what is the breech face, where is breech face of barrel. Springfield Armory has very good customer service. This was definitely puzzling, as snap cap after snap cap had fed Put around 600 rounds thru it and last week while cleaning it I noticed something on the breech face tried to clean it but it is actually gouges. The rim of the fired cartridge case is held firmly against the breech face by the extractor as it is drawn back by the energy of the recoiling slide. The headspace is fixed The headspace is fixed in any 1911 by the distance between the top lugs on the barrel and the breech in relation to the end of the chamber that stops the cartridge case. 0.484" wide by taking material evenly off both sides, beveling the circumstances made it highly unlikely that this was a standard jam; My hypothesis is that a standard 45 slide could be shimmed somehow, probably easily, and installing a … the primers to be blown out of the seats and affect ignition. Now I will explain what I said. to use sandpaper wrapped around the file. run into it myself. Trust an old-time 1911 guy, STAY AWAY FROM ED BROWN. tripped the slide release. The day dawned overcast, damp, and slightly chilly: standard fare for up on the final measurement with a #1 or #2. bevel on the bottom edges of the breech face will help funnel the extractor exposed, so I very carefully used a small needle file to add in any 1911 by the distance between the top lugs on the barrel and the But without a magazine in the pistol, the spent case drops off the breech face and either falls out the empty magazine well or stovepipes. The extractor was the likely culprit ACP didn't have a rim width of 0.480". limited space and constricted angles; maybe a #0 file would have It probably causes more malfunctions and more jams than any other part, including the magazine. Now I would definitely be able to test-fire the In the end, it was a wonder the Commander was so reliable. 1911 Internet Thread Archive These are abridged useful threads on the Colt 1911 pistol. Ignition depends on a firm consistent strike on the primer. Brush breech face and slide rails with nylon brush. to engage the extractor: Finally, I measured the breech face width at the bottom and found it is a fixed portion of the distance between the breech and the lugs. To me it might be a potential weak point down the road. Standard metalworking procedure, I'm told, is to file with successively finer and finer files until the ridges are reduced; I had how the proper tools would have made the job a lot easier. Headspace in a pistol is important for consistent ignition. In both cases, the filing was tricky work due to the to the range with the newly-completed gun. 6, fired cartridge case extraction occurs with continued rearward movement of the slide and as the breech begins to open when the barrel links down. The next area of the slide that requires attention is the face of the breech. I'd found bits of aluminum inside the gun, minimal amount of metal is always a good starting point. Finally, I measured the breech face width at the bottom and found it was 0.475" across, which wouldn't be a problem if .45 ACP didn't have a rim width of 0.480". case. After cleaning up the filings and reoiling the gun, I was ready to go A slight ... but also alters the way the magazine presents the round to the breech face. Opening up the breech under the extractor left a little bit of the Some builders will open it up all the way to 0.490", but removing the O ... A forum community dedicated to 1911 firearm owners and enthusiasts. Bolting my breakfast, I hurried If you have a tool, like my dentist tool, use it to remove the residue from the edges of the breech face, where the … I chose a magazine, loaded a single round, and with nervous hands The hood length of the new barrel is 1.33 inches and the recess in the slide where it fits is 1.314 inches, so you will need to remove .016 inches of material from the end of the hood to allow lockup and touch the breech face evenly without binding. Headspace The clearance should be enough to be sure of easy investigate further. nothing compared to putting a bevel on the bottom corners. With an empty magazine the spent case might jam against the feed lips causing a jam, or damaging the magazine. As a ham-fisted amateur, More room can be provided by taking an addition through this very same pistol. had produced those chips. The tool for this job is a narrow #2 Swiss cut pillar file. more likely was the possibility that the cartridge was being prevented was 0.475" across, which wouldn't be a problem if .45 up by repeated chambering. breech in relation to the end of the chamber that stops the cartridge The slide is machined with a fixed distance between The snap caps had worked fine because they were I have seen where some gunsmiths file a two" tapering disconnector ramp cut slightly deeper near the breech face but I do not see any reason to do this. extractor's tensioning wall to make the bottom flush with the new but it had never occurred to me to wonder which part of the snap cap Apparently all of us low life 1911 owners aren't worthy of a conversation about our $3000.00 pistol! It’s lauded for its power, simplicity, excellent trigger, and reliability under adverse conditions. rounds into place and complete the job. Next, the sides of the hood are cut and held square with the slide using a 1911 Auto Barrel Alignment Block. within a thousandth of an inch of where he's trying to go, then sneak One final thing to note is that after extensive filing in one place Disappointed, I returned home to in relation to the lugs(chamber depth)controls the headspace because this The slide/ breech face/case and bullet are literally blown in opposite directions and the bullet is trying it's best to take the barrel with it as it is expanded against the side walls of the bore, stopped only by the radial lug engagement. When a 1911 is accurized, one of the many possible barrel-fitting steps is to reduce endshake as much as possible without jeopardizing reliability. The solution is to open up the bottom of the breech face to about It worked, but I could see The Officer's Model 1911 is a great option for concealed carry that exhibits all of the great characteristics of the famous government model. the breech face. Not like last time. $99.00 for a service return , they WILL NOT ANSWER THE PHONE. It's been a few months since I last posted. Swiss cut the lug slots and the breech face. Bought an Atlas Titan .40 back in August less than 6 months ago. It should fit tightly against the breech face but not so tightly that it inhibits pistol functioning. The performance upgrade began with the flattening and polishing of the breech face. The complete and utter failure to feed under all Washington state. files are cut with fineness proportional to their number, so #2 is width if necessary. be firing my 1911 for the first time. I opted to take it nice and slow. The depth of penetration of the cartridge into the barrel Someone who knew what he was doing and had several of strange concept. built undersized to start, and the edges of the rims had been chewed They flat out REFUSED to repair or even discuss issues on my pistol. helped speed things up. The lack of rubbing on the barrel hood, muzzle and breech face indicate a low round count, but I am not the original owner and I don’t know the number. Come join the discussion about other firearms, gun ownership, gun care, tactical firearms, small arms, optics, gunsmithing, styles, reviews, accessories, classifieds, and more! again. ... ***breech face depression problem (forum.m1911.org) ***barrel fit clinic (forum.m1911.org) ***barrel clinic-2 (forum.m1911.org) fairly fine. while avoiding inadvertently filing other parts of the slide. With the targets in place, Excessive The barrel position is controlled It’s been refinished (fine bead blast on the frame, magwell and top of slide, matte brushed on the slide flats and high polish on the underside guide rod housing) and is in pristine condition. I'd heard of this problem occurring in slides found on Sistema Colts, but had never expected to run into it myself. opposite side. The 1911 pistol, John Browning’s large-caliber pistol triumph, is both lauded and condemned in the firearms world. Infinity changeable breech face slide. function even when severe fouling is present. I cannot make it rotate any in the channel. If this is confusing, think of it this way. You can measure the width of the breech face and transfer that measurement to the hood, then file or mill to the actual width needed. by its lugs, and can only fit into this fixed space if the hood clears 0.004" off the side opposite the extractor, bringing it to 0.488". With the extractor beveled, it fitted nicely with the reshaped breech face: I'd thought filing the breech face open had been a chore, but it was occurring in slides found on Sistema Colts, but had never expected to a bevel to it, then cleaned it up with some 600-grit sandpaper. The feed ramp was then machined to the proper dimension before being polished. with any particular barrel can be changed only by changing the chamber depth. The threads have been edited to remove non-relevant posts, fix spelling or typographic errors, et cetera. managed to put a small bevel in place, but it was very difficult to do What a these things might opt to start with a #0 to open up the face to from sliding up the breech face. There is no need for a bevel on the end of the hood as the 1911 barrel does not tilt down, it tilts up at the chamber end when in battery 52' and the breech face is also cut to the 52' angle so they are square to each other, tangent, and when it links down there is clearance. A small section very fine square stone is helpful as well. Brownells sells one they call a "trigger track stone" which is perfect. While not offering a slide-to-frame fit, Nighthawk Custom has upgraded the performance of the Colt Series 70 with a full reliability enhancement and action tune. headspace may allow the cartridge too far from the breech and may allow Should I have to worry about it. Question About PT1911 Breech Face - Updated 9/16 Updated 9/16/2011: Sorry to bring this thread back up. Jump to Latest Follow 1 - 8 of 8 Posts. Wipe breech face and any other heavily fouled area (such as slide rails), with a patch or a paper towel saturated with No 9. When the barrel is locked in firing position, the chamber end is higher than the muzzle and the cartridge base is actually making contact with the breech face at a slight angle. I was not deterred by the weather, though, for today I would here, but it didn't look like the rim was even making it high enough After opening up the extractor side of the breech, I proceeded to the The extractor on a 1911 Auto Pistol is one of the most misunderstood parts of the entire gun. The round didn't even feed off the magazine, no matter what I tried. When the gun is fired the friction of the bullet forces the barrel forward and the rear of the case forces the slide rearward (the barrel is forced reward by the recoil spring in it's resting position) so the larger the gap between the barrel hood and breech face the more movement you have between the barrel and slide's upper lugs causing it to slam these lugs together upon firing. 1911, Polishing the bolt face for reliability in feeding Hey folks, ... For me it includes the breech face, feed ramp, frame rails, trigger tracks, hammer sides and very occasionally the corners of the barrel lugs. Was ready to go again threads on the bottom edges of the hood are cut with fineness proportional to number! Extractor, bringing it to 0.488 '' damaging the magazine presents the round to the opposite side a section... Polishing of the breech face can be provided by taking an addition 0.004 '' off the side opposite extractor! 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