zombywoof Posted September 11, 2017 Share Posted September 11, 2017 I've been getting these weird fail to eject lately. The fired case lands between the slide and barrel (similar to picture), the next round is partially chambered. I have the extra power extractor spring, the extractor with the 9 on it. I've inspected the extractor and ejector, there is no damage. The extractor area is clean. It happens on different headstamps. It happens about once every 150 rounds. Of course that's twice on two level III matches and classifiers. I can't think of anything that's changed to make this happen. I've stoned a few thousands off of the stop to tighten it up on the case. It was pretty tight to begin with. Updates to follow. Any other ideas? Thanks. Link to comment Share on other sites More sharing options...
arkadi Posted September 11, 2017 Share Posted September 11, 2017 I would try raising PF a little and/or a weaker recoil spring. Link to comment Share on other sites More sharing options...
zombywoof Posted September 11, 2017 Author Share Posted September 11, 2017 46 minutes ago, arkadi said: I would try raising PF a little and/or a weaker recoil spring. Using a 9lb spring. 8lb doesn't work for me. Chrono'd at 131 PF Link to comment Share on other sites More sharing options...
johnbu Posted September 11, 2017 Share Posted September 11, 2017 How firmly does it hold brass? Any damage to the extractor or spring? Did you remove extractor and clean the slot? Any binding on slide motion? Are you using a long slide spring? They will coil bind and limit stroke. Is there a burr at the guide rod / frame / barrel area? Could be hampering motion. Did the ejector on sear cage break? Link to comment Share on other sites More sharing options...
zombywoof Posted September 11, 2017 Author Share Posted September 11, 2017 How firmly does it hold brass? Seemed to hold brass tight. Tip of extractor not touching inside of extractor groove in brass. Does now after stoning the stop Any damage to the extractor or spring? None seen Did you remove extractor and clean the slot? Cleaned. Within 500 rounds happened about every 150 rounds Any binding on slide motion? Are you using a long slide spring? They will coil bind and limit stroke. No binding. Noticed slight wear marks on inside of ejector, stoned lightly and polished.Using 9 lb standard Wolff spring. Is there a burr at the guide rod / frame / barrel area? Could be hampering motion. I see nothing. Slide moves smooth. Did the ejector on sear cage break? No. This is killing me. The gun is broken in and running sweet. This is a recent development and always comes at the wrong time. Link to comment Share on other sites More sharing options...
CHA-LEE Posted September 11, 2017 Share Posted September 11, 2017 How old is the extractor spring? Link to comment Share on other sites More sharing options...
zombywoof Posted September 11, 2017 Author Share Posted September 11, 2017 31 minutes ago, CHA-LEE said: How old is the extractor spring? Wolff extra power about 6000 rounds. Link to comment Share on other sites More sharing options...
CHA-LEE Posted September 11, 2017 Share Posted September 11, 2017 Feed it a new extractor spring and make sure that it isn't coil binding. You should be able to pull the extractor away from the seated position quite a bit when the extractor has sufficient travel. Some times the hole in the slide where the extractor spring goes isn't drilled deep enough and it will cause a coil bind situation when using extra power extractor springs. When I was shooting EAA pistols I would use the extra power extractor springs and proactively replace them every 10K to ensure reliable extraction. The depth of the extractor to rim engagement is also very important to tune. The extractor hook should be pinching the rim of the case into the side of the breach face. Tune the depth of the extractor by removing material from the over travel "bump" on the base of the extractor. Lastly, your extractor may simply be worn out. I have seen extractors fail prematurely (within 10K) and the only fix was to replace them. When I was shooting the EAA pistols there was an alarming amount of manufacturing variance from one extractor to another in both depth and hook shape. I had to fiddle with every single extractor to some extent to get it optimized in my guns. Unfortunately extractors are not simple drop in parts if you expect them to last many thousands of rounds with 100% reliability. Link to comment Share on other sites More sharing options...
tedahlenius85 Posted September 14, 2017 Share Posted September 14, 2017 Tune the depth of the extractor by removing material from the over travel "bump" on the base of the extractor. Picture on where to remove material? Link to comment Share on other sites More sharing options...
zombywoof Posted September 14, 2017 Author Share Posted September 14, 2017 Link to comment Share on other sites More sharing options...
zombywoof Posted September 24, 2017 Author Share Posted September 24, 2017 I do believe I have solved the extraction problem. I've got several hundred rounds down the pipe with no problems. I installed the original extractor, tuned it. I also replaced the extra power extractor spring. The old spring was much shorter than the new one. I've lost track of round count, but it's somewhere around 7000. I had a hard time believing the spring gave out around 6000 rounds. A $3.50 spring caused me a lot of issues. I will replace this component every 5000 rounds. Link to comment Share on other sites More sharing options...
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