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steve(ill) 
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 Topic: 22 rim fire
Posted: 16 Mar 2024 at 9:57pm |
took the rifle out to get rid of a critter tonight.. one shot.. sounded kind of "different" and could smell gun powder.. Slug seem to do the job...
Picked up the shell and where the rim was "struck" there was a pin hole maybe .030 inch diameter !! ....... Never had this happen before..
Bad shell ? ... Looked inside the gun and dont see anything ODD .
Edited by steve(ill) - 16 Mar 2024 at 10:00pm
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Like them all, but love the "B"s.
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Codger
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Posted: 16 Mar 2024 at 10:23pm |
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Never have seen that myself but someone was telling me the brass casings have thinned down on the manufacturing level on some brands of ammunition. Maybe your firing pin punched through the casing? Which way is the hole oriented? Outward as from exploding, or punched?
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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DaveKamp
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Posted: 17 Mar 2024 at 12:08am |
It'd help to know what platform your unit is based on... single, repeater, autoloader, etc., brand/model.
IF the action wasn't fully locked, or there was some carbon fouling the headspace a smidgen, or the firing pin fractured and reoriented slightly, it could have punctured the casing.
If it were me, I'd scope the bore and chamber to look for anything suspicious, then check the bolt seating and locking, inspect the end of the firing pin.
I would then put a fresh round in, cycle the action (but not fire) and then eject the cartridge and look at it for swelling, ripples, indents, or anything else to hint at a seating/registration problem at EITHER end.
IF I were to see something suspicious, I'd repeat the test with several other cartridges, just to make certain that what I saw was repeatable.
If I didn't see anything unusual, I'd test fire a few cartridges to see if they punctured, too.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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DMiller
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Posted: 17 Mar 2024 at 5:22am |
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Had a Marlin Glenfield 22 rifle that would build up carbon at breech, would do that twenty years ago. Thorough cleaning with a tooth brush at that point helped immensely. Some makes of munitions were worse for the carbon. Federal comes to mind.
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steve(ill)
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Posted: 17 Mar 2024 at 9:15am |
Ruger 10/22 , 10 round clip , about 10 years old..... Maybe shoot 50 rounds per year... Cant say i have cleaned it in several years..... This particular shell looks to say "SUPER" ?? on it ? .... i probably got 1500 rounds with 2-3 different manufacturers over the years.
Edited by steve(ill) - 17 Mar 2024 at 9:16am
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Like them all, but love the "B"s.
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steve(ill)
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Posted: 17 Mar 2024 at 9:30am |
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Looks like i got 1200 rounds of Winchester in new boxes... Got one 500 round box that has about 70 shells in it... Seems to be a mix of WIN, Federal and maybe 40 of these "super" ..... must have just dumped all the MISC in this box years ago... not sure where they came from .... Maybe clean the gun and get rid of this "old" box of shells ?
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Like them all, but love the "B"s.
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DMiller
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Posted: 17 Mar 2024 at 9:50am |
Relatively certain that is a Super word superimposed over a X, Winchester Westerns older Logo stamp, Newer is Far Smaller nearly unreadable but still same.
IIRC the Logo changed as WW Shut down the East Alton plant and moved to AL or MS wherever the Small Arms shops went. About thirty years ago!!
Is there just a Hint of Corrosion around the base rim? That could do it as these were always paper thin.
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DaveKamp
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Posted: 17 Mar 2024 at 7:44pm |
It looks like the pin strike is a square impression at the 1 o'clock position, and the rupture is at the six... am I seeing that right?
22 long runs around 20-24,000psi chamber pressure. That very well COULD have been just a bad shell (manufacturing defect+work hardening+corrosion)...
It could also be that the action didn't properly lock, leaving the back of the cartridge unrestrained... but the fact that the pressure is docile, and the surface area small makes the .22lr pretty darn hard to get a rupture without something really, really wrong.
Edited by DaveKamp - 17 Mar 2024 at 7:50pm
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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steve(ill)
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Posted: 17 Mar 2024 at 10:23pm |
Well, the possums brother showed up an hour ago.. No time to clean the gun... kicked out a couple shells from the chamber and one was a SUPER and one was a FEDERAL... Put the Federal back in the magazine, chambered and let the possum have the lead... NO PROBLEM........... Im guessing Dave is right, random bad shell... Will still clean gun as time permits and might put the "SUPER" shells is a box for "storage" when i run out of others. 
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Like them all, but love the "B"s.
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steve(ill)
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Posted: 17 Mar 2024 at 10:26pm |
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I dont think i ever bought those shells.. Probably inherited from Father in Law 10 years ago... He probably bought them in 1960. !!
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Like them all, but love the "B"s.
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Dakota Dave
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Posted: 18 Mar 2024 at 8:27am |
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In your picture that case looks corroded. It dosent have a uniform shiny look. It could be the picture lighting. I would look over the ammo well I've had some older ammo that some corrode and others don't. 22 ammo is so thin it's easly compromised. I've picked some out of the glove box that were dented just riding around.
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DaveKamp
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Posted: 18 Mar 2024 at 9:46pm |
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I found an unfired 22LR stuffed into the fusebox of a VW bug... dunno who the genius was that did that, but apparently they figured that if the circuit overloaded, it would be an audible indicator with a slight aroma...
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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DMiller
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Posted: 19 Mar 2024 at 5:35am |
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Stupid generally fixes itself!!
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Ted J
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Posted: 19 Mar 2024 at 9:37am |
I hope that the FIRST thing you did was to run a cleaning rod down the barrel. You could have had a squib and the bullet was stuck in the barrel. That's the FIRST thing you should have done. Looks like a corroded shell too. If the rest of them look like that, I'd throw em all away.
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