Rifles Misc All rifles not covered elsewhere!

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Old 01-05-2010, 18:18   #1
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Help with a PTR91

Hey, I have a PTR 91 with an "A000XX" serial number meaning that it was made by JLD enterprises during the great assault weapons ban, it lacks a flash hider and the coating is crap. Why do I have it you ask, I got it for 700 dollars where as the brand new ones are upwards of 1000.

Here is the problem...


IT WILL NOT CYCLE...the first mag I ran through presented this problem, Every time I pull the trigger the weapon will fire but the bolt will jam in the forward or closed position, I have to remove the mag and place the butt of the rifle on the ground and apply my body weight to the charging handle. I did have it successfully cycle once but I think that was a fluke, I took it to a gunsmith and he said that he thinks that the chamber where the fluting is contained was drilled too deep or perhaps the fluting has worn down over time.

Does anybody have a contrary or supporting opinion.

And if this is indeed true what do i need to do to solve this situation, do I need a new barrel and if I do does anybody have any ideas on what to get and where to buy one.

Thanks in advance.
Ryan
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Old 01-06-2010, 17:31   #2
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Originally Posted by Strm_Trpr View Post
I did have it successfully cycle once but I think that was a fluke
If it worked once, then it should be repeatable. If something broke or jammed, that should be identifiable and replaceable.

I took it to a gunsmith and he said that he thinks that the chamber where the fluting is contained was drilled too deep or perhaps the fluting has worn down over time.
I'm not familiar with the PTR-91, but its my understanding that a chamber gauge )either .308 or 7.62NATO) should have been able to determine the statement I highlighted as positive or negative within a minute. If I am right (and might not be), that tells me the gunsmith actually said, "I have no idea." The delayed-blowback action is unlike any gas-driven gun, and as such that gunsmith may just be unfamiliar with PTR-91s/CETMEs/G3s.
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Old 01-17-2010, 10:21   #3
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There are many potential issues with your rifle. I am not an expert, but I have some considerable experience with my PTR91, so maybe this will help. Maybe not.

1. Can you visibly see fluting the the chamber? When your cartridges are extracted, can you see the "burn marks" on the sides of your cases? I.e.:

2. If the fluting is present, and you have scorch marks on your brass, then have you checked bolt gap? Using an automotive feeler gage, measure the gap between the rear of the bolt and the front of the bolt carrier through the magazine well. The measurement should be near to .015", with .020 and .005 as the extremes.

3. If bolt gap is within spec, measure the gap between the nose of the bolt carrier and the charging handle, with the charging handle collapsed. The presence of a gap of some kind is critical, while the actual specs of that distance are not as important.

Let us know what you learned?
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Old 01-17-2010, 13:35   #4
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No worries. . . .you have one of the early JLD "bolt action rifles." They were great single shot models masquerading as semi-autos!!

And when you would call JLD and tell them your casings were failing to extract, they would say "you're full of it-you're the only one with this problem!
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Old 04-18-2010, 04:35   #5
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any update on this issue? You know, a good cleaning of the chamber may alleviate your issue.
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Old 04-18-2010, 17:45   #6
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Yes-clean the chamber after every shot!!!
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Old 04-26-2010, 04:17   #7
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As I recall,the first 3,000 or so PTR91's had really tight match chambers,and wouldn't handle milsurp ammo well.JLD repaired those that were returned under warranty,and subsequent rifles were built with more generous chamber dimensions.I don't know if that warranty still exists,since the company has changed names and possibly ownership,but give them a call.It might make you happy.

Last edited by wayne in boca; 04-26-2010 at 04:18. Reason: spelling
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Old 08-12-2010, 11:49   #8
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Just try using 308 ammmo. I have an early one and it had never jamed using 308 ammo. You can now buy federal fmj. as cheep as surplus.
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