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Old May 2, 2018, 01:30 PM   #1
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Astra constable 22lr issues with slide

Hey guys my astra constable in 22lr is having a failure to eject every round like the slide isn't going back far enough. When unloaded, as I pull the slide back about halfway I notice there is some resistance and it feels gritty. I have noticed however that the chamber of the barrel has a rough patch where it says 22. Really rough. No rust though. Can this rough part of the chamber be causing my issues? Or does the slide not even contact the chamber? If this is the issue will 600 grit sandpaper and polishing after fix it?
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Old May 2, 2018, 04:15 PM   #2
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I'll assume you've already tried cleaning and lubricating; since the chamber's rough yes, I'd polish it, (even if you cleaned it, it's possible the chamber is just fouled) I'd start with (Car) rubbing compound first since it's easy to remove too much metal and, then what ...I'd get a bore brush, a cleaning patch, and a drill. Put some rubbing compound, or metal polish like Flitz or Mecguiers on the patch, place it over the bore brush then attach that to the drill. I'd spin the drill inside the chamber for 5 or 10 seconds at a time then try a shell in the chamber (or however else you determined the chamber was rough). Once the chamber looks & feels smooth, I'd stop polishing right there, if the polish doesn't clean it up I'm not sure I'd progress to sandpaper but if I did, I'd use emery cloth, 1000 grit or finer, and i'd do it "wet" (with oil or break free) since that will leave a smoother finish then if the emery cloth is dry.

If the chamber isn't smooth a minute or two of polishing time, I think I'd stop. But I'd think the polishing ought to clean up the rough chamber just fine.

Since you can feel grittiness from the slide I'd try to ascertain what is causing that too. In your gun the weakest part is the action spring (the spring that fits over the barrel) so that's what I'd examine first. You may just need a new spring. Also it might just be on backwards (one end of the spring might be designed to be more narrow then the other and all you might really need to do is swap ends.) Or the spring might have flat spots/it became oval-shaped rather then round (maybe the spring got stepped on while it was removed from the gun).

If the spring isn't the problem, then have a good hard look at the slide and frame rails. The rails on the frame in your gun are relatively short, so I'd be surprised if that's where the problem is. If the rails were damaged you'd probably see it easily. And the slide and the frame are castings, or forged, and so it's not likely those have warped. In this style of gun most of the metal-to-metal contact happens between the action spring; the barrel exterior surface; and inside of the big hole in the slide where the barrel comes through. While you have the spring off I'd put the slide back on without it just to see how much grittiness you can feel then. Examine inside the slide anywhere there is or might be metal-to-metal happening, plus the hole at the end of the slide where the barrel comes through (might be a burr inside it but from what you mentioned about the slide binding half way back, this isn't likely). Also check & feel the outside of the barrel (perhaps chipped, burred somewhere, or just very rough, but if this were the problem it would be visible to you).

If none of this shows up the problem area, I'd get hold of some inside & outside micrometers and try to measure the contact areas of frame and the slide...then polish the rails, or wherever it is actually binding. But I'd start with 1000 grit, or finer emery cloth and sand it wet. 20-30 seconds at a time then try the slide again until you've isolated the problem area(s).

Last edited by marc780; May 2, 2018 at 04:34 PM.
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Old May 3, 2018, 10:04 PM   #3
Bill DeShivs
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For God's sake, don't let Marc780 work on your gun!
The outside of the chamber shouldn't affect the slide operation. Leave the springs alone-they very seldom wear out.

Proper cleaning and lubrication is probably all the gun needs.
Bill DeShivs, Master Cutler
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Old May 5, 2018, 07:17 PM   #4
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Try the trouble shooting method.......
Field strip the gun by removing the magazine, slide, and recoil spring.

Install ONLY the slide and check movement back and forth for roughness.
If good, install the recoil spring and try again. (SMALL end faces to the REAR).
If good install the magazine.

This will at least help narrow down where the problem is.
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Old June 13, 2018, 03:23 AM   #5
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I'll give you this bill i was full of it, my reply... i thought he was talking about inside the bore and chamber - Instead he's talking about the exterior of the barrel. The image of the piece was not there,the first time I commented.

Last edited by marc780; June 13, 2018 at 05:14 AM.
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Old June 13, 2018, 07:50 AM   #6
4V50 Gary
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Do what Bil & Dfarishweel suggested.

Change your ammo (higher power but same caliber)
Clean the slide.
Clean the frame.
Clean the barrel
If there's rust, remove it by scraping with a nickel (5 cent piece) or penny with oil.
Check the magazine lips for straightness.
If it doesn't have a magazine safety, try firing it without the magazine inserted. This will tell you if the magazine and its spring is causing too much drag on the slide.
Like Bill says, lube the gun
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Old Yesterday, 06:58 PM   #7
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I thought the OP was talking about the inside of the chamber too....
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