Remmington automatics failure to extract..possible cuases..

[cloverleaf]

Hey all- I know Ive seen posts related to this here before but cant find it. I was trying to help a guy get his rifle sighted in at the public sight in today. That went Ok despite the Tasco scope and see through rings ( :roll: why do folks do that :roll: ). Any way, he's on target but about every third round the case would fail to extract and would need to be tapped out with a rod. The base of the case would be torn away by the extractor. My diagnosis was a fouled chamber. A few shots of gun scrubber did nothing to alleviate the problem. In the end I gave him the number of a good smith as I am not about to disassemble a Remington Automatic on the bench at the range. Thoughts or ideas? I'd bet money I will see a similar issue again in the next two weeks. CL

 

[Darkhorse]

Probably needs a chamber brush to scrub the chamber. Could use a complete breakdown and cleaning also.
The see thru mounts comes from a transitional time when hunters did not totally trust scopes and thought they needed an alternate sighting system. They also thought that if a bear was charging you then using the iron sights were faster than the scope.

 

[Anonymous]

I've seen a few of those like that. A dozen years or so of neglect and those 740/7400s turn into total jam-o-matics.

A total break down and scrub a dub ought to work wonders.

 

[Thebear_78]

Time to polish the chamber


Sent from my iPhone using Tapatalk

 

[JD338]

I agree with the others, a total break down and a thorough scrub/cleaning is in order followed with a proper lubrication using high quality oil.
Years ago I had a M742 carbine in 30-06. I kept it clean and never had cycling issues.

JD338

 

[cloverleaf]

Thanks guys- you confirmed my diagnosis. My question about "why" was more rhetorical in nature. I shouldn't be so critical...I am not that far away from the time when Tascos and 80.00 Bushnell's were all I could afford. I still use a couple of them. He was a nice guy and didnt tell me I was full of it when I suggested the chamber might need some attention. Thanks again. CL

 

[orchemo]

Remington sells brass chamber brushs. Buy one and scrub the chamber well before and after shooting.

Your problems will be gone

 

[BeeTee]

I tried shooting some NATO ammo in a 308 7400 I owned once. Bad idea... Nearly every rim was torn off and there was evidence of high pressure. After a few rounds of that, I had the entire mechanism of the action polished, and then loaded some sensible moderate pressure ammo using a small base die and used a medium burning rate powder. Never had another jam or torn rim.

 

[1Shot]

Yep neglect and improper lube will cause that but also something that I have seen a bunch of times in my buddies gunsmith shop are these rifles with scratches in the chamber from improper cleaning or not being cleaned and crud build up causing a scratch to be made when firing. Just a very slight scratch can cause BIG PROBLEMS. By the way if you have a Rem 742 and any part breaks or wears out it become a wall hanger because there are no new available parts to fix them left.

 

[Wyo7200]

I tried shooting some NATO ammo in a 308 7400 I owned once. Bad idea... Nearly every rim was torn off and there was evidence of high pressure. After a few rounds of that, I had the entire mechanism of the action polished, and then loaded some sensible moderate pressure ammo using a small base die and used a medium burning rate powder. Never had another jam or torn rim.

That is interesting as nato 7.62 is lower psi saami max than a .308.

 

[truck driver]

I tried shooting some NATO ammo in a 308 7400 I owned once. Bad idea... Nearly every rim was torn off and there was evidence of high pressure. After a few rounds of that, I had the entire mechanism of the action polished, and then loaded some sensible moderate pressure ammo using a small base die and used a medium burning rate powder. Never had another jam or torn rim.

That is interesting as nato 7.62 is lower psi saami max than a .308.

Could have been some Nato 7.62 loaded for machine guns which is a higher pressure round.