ShotGunWorld Shotguns

It is currently Tue Sep 29, 2020 6:29 pm

All times are UTC - 6 hours [ DST ]


Image



Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: 870 Jam When Hot
PostPosted: Wed Sep 09, 2020 2:52 pm 
Utility Grade

Joined: Wed Oct 30, 2019 11:22 am
Posts: 17
I am shooting 5 round stages with a friend at the trap range.
The 870 has an extended magazine, and I load 5 at a time.
This is entirely for practice when the zombie apocalypse comes.

After the 3rd stage (15th shell), I get a jam that will not eject the last spent shell.
The second time this happened today, it was on the 24th shell.

When the 870 cools down 10 minutes or so, the jam clears itself and I can eject the shell.
I am puzzled...

Ammo is Winchester Super-X, 12-ga Heavy Game Load, 2 3/4", 1255 fps, 1 1/8 oz of #7 1/2"

The 870 is 1982 vintage, less than 500 rounds since new.




Top
 Profile  
 
 Post subject: Re: 870 Jam When Hot
PostPosted: Wed Sep 09, 2020 4:32 pm 
Limited Edition

Joined: Wed Oct 28, 2015 8:45 am
Posts: 374
your loads are probably steel base hulls and are expanding along with your gun try brass base hulls like AAs or STS hulls.


Top
 Profile  
 
 Post subject: Re: 870 Jam When Hot
PostPosted: Wed Sep 09, 2020 4:32 pm 
Tournament Grade

Joined: Fri Dec 27, 2019 7:22 pm
Posts: 158
Location: NE South Dakota
Polish the chamber.


Top
 Profile  
 
 Post subject: Re: 870 Jam When Hot
PostPosted: Thu Sep 10, 2020 11:45 am 
Crown Grade

Joined: Sun Mar 03, 2013 11:01 am
Posts: 6044
Location: Newton Kansas
Yep, polish the chamber TO A VERY HIGH MIRROR FINISH.

_________________
I don't always venture out into the sub-freezing darkness, but when I do, it is hunting season, and I carry a Browning. Stay hungry my friends.


Top
 Profile  
 
 Post subject: Re: 870 Jam When Hot
PostPosted: Thu Sep 10, 2020 1:15 pm 
Utility Grade

Joined: Wed Oct 30, 2019 11:22 am
Posts: 17
Thanks for all the replies.

I normally shoot STS or AA, but have a few cases of the Winchester high base steel to be rid of.
The observations above seem to be right on the money.

I have a precision shell gauge, but it didn't occur to me to use it.
I will check all three boxes for next week with the gauge.

Polishing the chamber is definitely on my to-do list.

Thanks again.


Top
 Profile  
 
 Post subject: Re: 870 Jam When Hot
PostPosted: Thu Sep 10, 2020 10:32 pm 
Tournament Grade

Joined: Tue Apr 20, 2004 11:51 am
Posts: 273
Location: central Missouri
burnishing with 00 steel wool on a spinning rod {drill motor} will do fine..

_________________
gunnut69--
The 2nd amendment to the constitution of the United States of America-
"A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed."


Top
 Profile  
 
 Post subject: Re: 870 Jam When Hot
PostPosted: Mon Sep 14, 2020 4:06 pm 
Utility Grade

Joined: Wed Oct 30, 2019 11:22 am
Posts: 17
I have isolated it down a bit further.

The failure is confined to Winchester Super-X Heavy Game Load, 1255 fps, 1 1/8 oz, #7.5.
I tested each fresh shell in my gauge, all are uniform in the gauge, none are tight.

The jam occurs at #4 or #5 of a group of five, shot rapidly.
When things cool down, I can eject the spent shell.

The steel base of the jammed shell has expanded, and will not longer fit in my gauge without forcing
it.

As a test, I shot a box of 25 STS, not one single problem.
The peculiar parts... the Winchesters that jam in the 870 are 100% OK in my V3.

I will take the advice above and polish my chambers.
Thanks for the tips.




Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Registered users: 47MolineRTU, albanygun, AlexS, Anatidae, Auldthymer, bbush, bigbluedodge, BillJ61, Bing [Bot], CapHillSkt, casonet, cbradford, Cccollin545, Chasd3, classicbici, cleboje, Cooper4141, danth, Dave in AZ, dcr5468, dcraft, dhb66, Diddle, divot30, DooFighter, Drew Hause, Ernest T, fishrising, geometric, George Z, Gofer, goodemachine, Google [Bot], Google Adsense [Bot], hammontw, hopper810, Hummy585, Husker90, IL Duckshewter, Jaspo01, Jim18611865, jimwhitecollection, Johnnyhonda440, jusanothajoe, Keperkey, krimmie, lossking, lt0026, mactownbob, Majestic-12 [Bot], mallard2, md2020, mikemck, Mule Driver, Nebs, nkhrfh, noweil, oneeyednine1029, oneounceload, papillonkirby, pete blakeley, rbdjr, Remduck1, RMc, Rockett0, Rooster booster, shorebird, Skeet_Man, Thskeer, Tidefanatic, Tom Shaffer, tschlemm, VictorGK, WAGinVA, willy1125, wiredducker, YevetS


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group    - DMCA Notice