Old 10-24-2008, 01:26 AM   #1
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Bersa thunder 380 jams

hey guys my brother bought his bersa not to long ago, and we put about 200 rds through it already and it has jammed several times on us! is it because its still breaking in? we always cleaned the gun after we were done shooting it with lots of oil on the sliders and mag but what seems to be the issue here? your help is greatly appreciated
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Old 10-26-2008, 10:03 AM   #2
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Quote:       Originally Posted by ae13291 View Post
hey guys my brother bought his bersa not to long ago, and we put about 200 rds through it already and it has jammed several times on us! is it because its still breaking in? we always cleaned the gun after we were done shooting it with lots of oil on the sliders and mag but what seems to be the issue here? your help is greatly appreciated
Is the gun failing to feed or failing to extract/eject? You need only a tiny amount of oil on the sliding serfaces, use NO oil on the magazine.
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Old 10-27-2008, 11:43 PM   #3
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when the shell is coming out thats when it sometimes is getting stuck or when the new bullet is trying to fit in the chamber
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Old 10-28-2008, 07:59 PM   #4
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In order to tell if it is not ejecting or loading the gun has to be fired slowly. If it fails to extract it leaves the ctg in the chamber, if it fails to eject it leaves the ctg in the slide. If it failes to chamber it leaves the ctg in the mag or slide. Sounds like the arm was over oiled, thouroughly clean the arm and the magazine. Spairingly oil the slide. Clean the bore and then run a dry patch through it making sure there is no oil in the bore...if the chamber has oil in it it will hold the ctg and the slide will open prematurely, this effects the proper timing of the arm and can lead to issues. Do you have more than one mag?
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Old 10-29-2008, 03:16 AM   #5
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Quote:       Originally Posted by K75RT View Post
In order to tell if it is not ejecting or loading the gun has to be fired slowly. If it fails to extract it leaves the ctg in the chamber, if it fails to eject it leaves the ctg in the slide. If it failes to chamber it leaves the ctg in the mag or slide. Sounds like the arm was over oiled, thouroughly clean the arm and the magazine. Spairingly oil the slide. Clean the bore and then run a dry patch through it making sure there is no oil in the bore...if the chamber has oil in it it will hold the ctg and the slide will open prematurely, this effects the proper timing of the arm and can lead to issues. Do you have more than one mag?
my brother has a 9 round clip and a 7 round clip, when the bullet shell comes out i can see the cross lines thats all over it.
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Old 10-29-2008, 03:31 AM   #6
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Quote:       Originally Posted by ae13291 View Post
hey guys my brother bought his bersa not to long ago, and we put about 200 rds through it already and it has jammed several times on us! is it because its still breaking in? we always cleaned the gun after we were done shooting it with lots of oil on the sliders and mag but what seems to be the issue here? your help is greatly appreciated
What I've put in red font above is one thing I'd stop doing, that is if you or he is leaving excess oil/lube on/in it? Over lubing and/or leaving excess oil/lube on parts can jam things up also. You only need a film on most parts.

If you're leaving a lot of oil/lube on the firearm when you're done cleaning it, then you guys take it out and start shooting it again, all that excess oil is giving the dirt and debris some where to stick. I'm not saying it's the entire cause, but it could be adding to it?

Also, what ammunition are you using? If this is happening with the one and only ammo you've tried, I'd also suggest, after making sure there's no excess oil/lube on it, trying a couple different kinds of ammo. Preferably a name brand. Use a good ammo for the first few hundred rounds.

I'd check the feed ramp on the mags also? If the mags can be taken apart for cleaning on this model, I'm not familiar with it, and you or your brother has done so after shooting to clean, I'd make sure they were put back together properly also...Not saying you or he has no clue or did this or haven't thought to check it, just throwing things out there for you to try and maybe check?

Good luck.
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Last edited by GlockMeister; 10-29-2008 at 03:36 AM.
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Old 10-29-2008, 07:34 PM   #7
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Quote:       Originally Posted by GlockMeister View Post
What I've put in red font above is one thing I'd stop doing, that is if you or he is leaving excess oil/lube on/in it? Over lubing and/or leaving excess oil/lube on parts can jam things up also. You only need a film on most parts.

If you're leaving a lot of oil/lube on the firearm when you're done cleaning it, then you guys take it out and start shooting it again, all that excess oil is giving the dirt and debris some where to stick. I'm not saying it's the entire cause, but it could be adding to it?

Also, what ammunition are you using? If this is happening with the one and only ammo you've tried, I'd also suggest, after making sure there's no excess oil/lube on it, trying a couple different kinds of ammo. Preferably a name brand. Use a good ammo for the first few hundred rounds.

I'd check the feed ramp on the mags also? If the mags can be taken apart for cleaning on this model, I'm not familiar with it, and you or your brother has done so after shooting to clean, I'd make sure they were put back together properly also...Not saying you or he has no clue or did this or haven't thought to check it, just throwing things out there for you to try and maybe check?

Good luck.

thanks for your advice i appreciate it. the mags are both factory bersa ones and for bullets, the gun is new it only has 200 rds in it so far and its fired some blazer rounds remington umc and the better remington ones, we also bought some from the range dont remember the brand but they were made in italy. and as for both of us were pretty much newbs i have been learning more about them on this site, i will also keep in mind to lube it lightly with oil and make sure its all dripped out. thanks again
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Old 11-04-2008, 03:58 PM   #8
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Agree, easy on the oil. None near the barrel. Oil in the barrel can make a vacuum effect. And are you sure you're not limp wristing?
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Old 11-08-2008, 05:55 AM   #9
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Quote:       Originally Posted by thunderjohn View Post
Agree, easy on the oil. None near the barrel. Oil in the barrel can make a vacuum effect. And are you sure you're not limp wristing?
sorry lol whats limp whisting?
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Old 11-08-2008, 07:53 AM   #10
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Wife has a Bersa and loves it. No feed problems using Remington ammo. We haven't tried any other ammo as this stuff works great. Also, like the guys say, don't over-oil. I lightly oil her pistol, and then wipe it all off, leaving a very small amount on the gun.
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Old 09-05-2009, 07:56 AM   #11
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Quote:       Originally Posted by ae13291 View Post
sorry lol whats limp whisting?
Bersa 380s are a strait blow back operation. Limp wristing is when you are not keeping your wrists locked when you are firing the gun. Or you are allowing the recoil to rock the gun barrel up allowing excessive muzzle flip,
On the 380 your wrists need to be held firm to allow proper cycling of the slide which is in large part responsible for the extraction of the expended shell and loading of the new round.
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Old 10-08-2009, 04:33 PM   #12
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Did you clean out the preservative grease that the gun comes with in the mag and internals ?
On the Bersa Talk forum they talk about it gunking the works especially the mag.
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Old 10-12-2009, 02:22 PM   #13
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On my 380 I pulled the mag out and dry cycled the slide back and forth about 300 times (over a period of several evenings)..MAKE SURE IT'S EMPTY!!! . Don't let it slam back into place...don't dry fire it with the magazine in...just slide it back and forth (hammer will stay back)..wear a glove for comfort. I used some Outers oil on the slide but I think any decent gun oil will work...not too much...need to break in the slide and shooting is the expensive way to do it...I'll bet the load problems are due to limp wristing....if there is someone you know have them shoot it...limp wristing is not to be confused with squeezing too tight (squeeze too tight and you will normally shoot low and left of aim)...just a decent grip and don't let the wrist "snap back or up"..it will come very naturally when you do it for a while....I had a bit of a time adjusting to the little blow back 380 but I really like it...just bought another one (Bersa matte finish...my first one was a duotone) today. When they are broken in they will "digest" most any good factory ammo and will be very dependable...don't try to fire hollow points or other self defense ammo until you have put about 400 total through it..and don't oil the ramp area where the ammo feeds up into the barrel.

Don't oil the magazine (they are not clips they are magazines..) and use only Bersa factory magazines for best results. You can find a lot of "how to " videos on You tube concerning cleaning the pistol and cleaning the mag.....when you clean the mag...if you do..make sure to follow the video exactly as you can have springs and feed ramps flying all over the room..simple if you go slow and follow the videos.

Last edited by opos; 10-12-2009 at 02:28 PM.
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Old 10-17-2009, 03:00 AM   #14
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I found that it's best to use high quality ammo with my Bersa Thunder .380. Also, the clips can be a bit too stiff until you've worked them over a bit. Try firing or cycling with 6 rounds instead of 7 until you get it loosened up. It solved the problems I was having.
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