konkapot Posted May 5, 2019 Share Posted May 5, 2019 New to me Open gun. Cleaned and properly lubed. Have fired 300 rds of Atlanta Arms 38SC ammo. Have had three failures to eject. Casing is caught in the ejection port, open end of the casing facing outboard.to the right. All 300 rounds have been fired through the same magazine. What should I check first? Link to comment Share on other sites More sharing options...
OPENB Posted May 5, 2019 Share Posted May 5, 2019 Over sprung. Recoil spring. Check extractor tension. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted May 5, 2019 Share Posted May 5, 2019 Try a 2nd mag (and a 3rd). I had same problem with 9mm Major TruBor, and it turned out it was one of my mags. I'd also check with the previous owner - what do they say ? Have you run The Plunk Test on the ammo -- I know, it should be good, but worth checking ... Is that a 2011 or a Glock open gun ? Link to comment Share on other sites More sharing options...
konkapot Posted May 5, 2019 Author Share Posted May 5, 2019 2011. Unknown builder, but previous owner (also a gunsmith) has generally seconded what's been posted here so far. The recoil spring feels heavy to me; previous owner recommended an 10 or 11; what's in here now is much heavier than that. Will try any suggestions to get this figured out. Link to comment Share on other sites More sharing options...
EEH Posted May 5, 2019 Share Posted May 5, 2019 (edited) 8 # my gun is also wet with oil, wet Edited May 5, 2019 by EEH Link to comment Share on other sites More sharing options...
UpYoursPal Posted May 5, 2019 Share Posted May 5, 2019 Oversprung would also be my guess. 7-8lbs spring is generally the sweet spot for most .38S guns Link to comment Share on other sites More sharing options...
dansedgli Posted May 5, 2019 Share Posted May 5, 2019 I have run up to 14lb reliably. It would be your extractor imo but try a spring first if ita really heavy because cheap. Link to comment Share on other sites More sharing options...
zzt Posted May 6, 2019 Share Posted May 6, 2019 Two of my Open guns will function with 10 lb recoil springs, but the brass just dribbles out. Both run fine with 9 lb springs, but 8 is the sweet spot. My newest Open gun will not run properly with anything over a 7 lb spring. Link to comment Share on other sites More sharing options...
191138sc Posted May 6, 2019 Share Posted May 6, 2019 17 hours ago, EEH said: my gun is also wet with oil, wet I ran a 7LB with that bullet combination and also found my 2011 needed to be dripping with lubrication to function 100% of the time. Link to comment Share on other sites More sharing options...
racegun9 Posted May 6, 2019 Share Posted May 6, 2019 Where are the rounds that do eject landing? Are they barely coming out and almost landing at your feet? Is there anything consistent with the pattern? What type scope and mount? Link to comment Share on other sites More sharing options...
konkapot Posted May 7, 2019 Author Share Posted May 7, 2019 The rounds that aren't ejecting aren't ejecting....so no landing. Cmore scope and a plastic cmore mount. Link to comment Share on other sites More sharing options...
jpl Posted May 7, 2019 Share Posted May 7, 2019 So when it does run, how far are the empties flying? Link to comment Share on other sites More sharing options...
bigboy69 Posted May 7, 2019 Share Posted May 7, 2019 (edited) I would start with a 10lb spring and see what happens and how your dot tracks. Then try a 9lb and see what happens and how your dot tracks. A lot of things come into play, slide tightness, spring length, ejector drag etc Also when you take it to the range, load up a mag and rack your rounds through the gun w/o firing it and see what its doing. Then move onto changing the recoil spring poundage. Edited May 7, 2019 by bigboy69 Link to comment Share on other sites More sharing options...
rishii Posted May 7, 2019 Share Posted May 7, 2019 In addition to the above, Put a piece of masking tape under the c-more and mount when you shoot it to check if the brass is hitting it and bouncing back in Link to comment Share on other sites More sharing options...
konkapot Posted May 7, 2019 Author Share Posted May 7, 2019 On an indoor range so the casings bounce a bit but they are NOT flying out of the gun for sure; disregarding the bouncers there were 5-10 that were basically at my feet. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted May 7, 2019 Share Posted May 7, 2019 21 minutes ago, konkapot said: basically at my feet. Too much spring ... Link to comment Share on other sites More sharing options...
jpl Posted May 8, 2019 Share Posted May 8, 2019 4 hours ago, Hi-Power Jack said: Too much spring ... Yup, too heavy a spring for the load. Link to comment Share on other sites More sharing options...
Mikeski Posted May 9, 2019 Share Posted May 9, 2019 Double check and make sure it's tuned for 38super comp and not 38 super. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted May 15, 2019 Share Posted May 15, 2019 Hello: Sounds like a recoil spring problem. I test all my springs since I replaced one years ago and the pistol would not run. I put the old spring in and it ran great. I made a tester and the 9lb spring was actually a 15lb spring. I then switched to ISMI springs and I have not had a problem. I still check them and the one that comes out of the pistol to make sure they are close in spring weight. Chrome silicon springs are better than piano wire springs. They last longer and hold their spring weight longer. That is what valve springs are made out of in your car. Sprinco make some good springs also. I would buy a 8lb and 9lb for your open pistol. That should get you where you want to be. Thanks, Eric Link to comment Share on other sites More sharing options...
konkapot Posted May 17, 2019 Author Share Posted May 17, 2019 Thanks to all. Switched to a 10lb spring and started loading my own ammo and, like magic, the problem went away. Link to comment Share on other sites More sharing options...
Dranoel Posted May 17, 2019 Share Posted May 17, 2019 On 5/5/2019 at 12:28 PM, konkapot said: Have fired 300 rds of Atlanta Arms 38SC ammo. Have had three failures to eject. Casing is caught in the ejection port, open end of the casing facing outboard.to the right. Is that what the previous owner shot in it and are they major power factor? Link to comment Share on other sites More sharing options...
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