ejection issue mossberg 500

the rifleer · February 23, 2014, 11:24 AM

I have a mossberg 500c, 20 gauge. I use it for shooting clays a lot and it has trouble ejecting shells.

When you pump it it is very smooth and always pulls the shell out of the chamber perfectly, but when it eject the shell, the shell hits the receiver, separates from the bolt head and remains inside the receiver, which results in a jam.

Sometimes it is a stove pipe style jam, other times the spent shell just sits on top of the next cartridge and when you pump it forward obviously it wont load because there is the new cartridge and the spent cartridge inside the receiver.

I am thinking maybe it is the ejector, but I wanted to ask and see what you guys think.

Before anyone suggests its the shells, I've tried Federal, Fiocchi, Estates, Winchester and Remington shells and it does it with all of them.

g.willikers · February 23, 2014, 01:26 PM

Just a guess:
Maybe the cartridge lifter (elevator) is interfering with the ejected case.
See if it looks like it's operating correctly.
Also check that the cartridge stop and/or cartridge interrupter aren't letting rounds sneak past from the mag tube, and interfering with the ejected round.

amd6547 · February 23, 2014, 05:43 PM

It is either the ejector or the extractors. Or weak extractor springs.

SHR970 · February 24, 2014, 07:10 PM

Let me guess.... if you not so slowly extract one from the chamber and watch what it does.....it goes up towards 1 or 2 o'clock instead of 3 o'clock as it is being kicked loose from the bolt.

Quote:

It is either the ejector ~~or the extractors. Or weak extractor springs.~~

amd6547 · February 24, 2014, 08:32 PM

The screw which holds on the ejector can back out, causing problems.
My older Mossberg 500 (really Western Auto Revelation) started having FTE's...I found the screw to be a little loose after years of shooting. It's loctited now.

Polglock · March 9, 2014, 07:53 PM

I've seen guys reload and use way to much shot like my grandad and that 2 3/4" she'll turns into an almost 3" shell and has problems only ejecting. His crimps look more like tapered ends almost holding shot in lol. Just another option other than gun parts causing the problem.

Sarge · March 9, 2014, 08:19 PM

AS noted the ejector screw works loose on 500's. If the screw is tight and/or damage to the ejector is apparent, replace it and apply blue thread-locker to the ejector screw before re-assembly.

At the first sign of weak extraction, I replace both extractors and springs.

It wouldn't cost a lot to replace all of them and eliminate the problem entirely.

amd6547 · March 10, 2014, 12:12 PM

Yeah, I have been thinking of replacing both extractors and springs...maybe the ejector, too.
My 500 is pretty old. That, and it lived a hard life before I pulled from the bottom of a stack of beat up security company riot guns at a gun show, and paid $75 for it 20yrs ago.
It has always been reliable, except for that one FTE incident. Of late, I have been making a few changes, like adding a Hogue overmold short LOP stock and fore end.

February 23, 2014, 11:24 AM	#1
the rifleer Senior Member Join Date: March 5, 2008 Location: Sunny California Posts: 1,281	ejection issue mossberg 500 I have a mossberg 500c, 20 gauge. I use it for shooting clays a lot and it has trouble ejecting shells. When you pump it it is very smooth and always pulls the shell out of the chamber perfectly, but when it eject the shell, the shell hits the receiver, separates from the bolt head and remains inside the receiver, which results in a jam. Sometimes it is a stove pipe style jam, other times the spent shell just sits on top of the next cartridge and when you pump it forward obviously it wont load because there is the new cartridge and the spent cartridge inside the receiver. I am thinking maybe it is the ejector, but I wanted to ask and see what you guys think. Before anyone suggests its the shells, I've tried Federal, Fiocchi, Estates, Winchester and Remington shells and it does it with all of them. __________________ There is no such thing as a stupid question, only stupid people.

February 23, 2014, 01:26 PM	#2
g.willikers Senior Member Join Date: September 28, 2008 Posts: 10,442	Just a guess: Maybe the cartridge lifter (elevator) is interfering with the ejected case. See if it looks like it's operating correctly. Also check that the cartridge stop and/or cartridge interrupter aren't letting rounds sneak past from the mag tube, and interfering with the ejected round. __________________ Walt Kelly, alias Pogo, sez: “Don't take life so serious, son, it ain't nohow permanent.”

February 23, 2014, 05:43 PM	#3
amd6547 Senior Member Join Date: May 27, 2006 Posts: 2,313	It is either the ejector or the extractors. Or weak extractor springs. __________________ The past is gone...the future may never happen. Be Here Now.

February 24, 2014, 08:32 PM	#5
amd6547 Senior Member Join Date: May 27, 2006 Posts: 2,313	The screw which holds on the ejector can back out, causing problems. My older Mossberg 500 (really Western Auto Revelation) started having FTE's...I found the screw to be a little loose after years of shooting. It's loctited now. __________________ The past is gone...the future may never happen. Be Here Now.

March 9, 2014, 08:19 PM	#7
Sarge Senior Member Join Date: May 12, 2002 Location: MO Posts: 5,457	AS noted the ejector screw works loose on 500's. If the screw is tight and/or damage to the ejector is apparent, replace it and apply blue thread-locker to the ejector screw before re-assembly. At the first sign of weak extraction, I replace both extractors and springs. It wouldn't cost a lot to replace all of them and eliminate the problem entirely. __________________ People were smarter before the Internet, or imbeciles were harder to notice.

March 9, 2014, 07:53 PM	#6
Polglock Member Join Date: August 26, 2011 Posts: 83	I've seen guys reload and use way to much shot like my grandad and that 2 3/4" she'll turns into an almost 3" shell and has problems only ejecting. His crimps look more like tapered ends almost holding shot in lol. Just another option other than gun parts causing the problem.

March 10, 2014, 12:12 PM	#8
amd6547 Senior Member Join Date: May 27, 2006 Posts: 2,313	Yeah, I have been thinking of replacing both extractors and springs...maybe the ejector, too. My 500 is pretty old. That, and it lived a hard life before I pulled from the bottom of a stack of beat up security company riot guns at a gun show, and paid $75 for it 20yrs ago. It has always been reliable, except for that one FTE incident. Of late, I have been making a few changes, like adding a Hogue overmold short LOP stock and fore end. __________________ The past is gone...the future may never happen. Be Here Now.