Teach/Mike/Calib Rem 7400 ??

Big Al1

Wife's friend brings over a 7400 in 30-06 that had been neglected ever since her divorce! The thing looked like it came out of King Tuts tomb! So I dis-assembled and cleaned! Found some pitting near the muzzle, but it cleaned up after socking in Kroil and chucking a cleaning brush in the cordless drill. The test fire was interesting! First shot the empty did not extract so I figure bad extractor, but the rim was ripped off the empty, so good extractor. Closer inspection revealed some pitting in the chamber, I polish the chamber. Next shot same thing, rim ripped off case. My opinion is the chamber is to pitted to save! Can't find a replacement barrel in any caliber. I say it's a parts gun. What say you??!!

Big Chief

Just like a woman to keep a man's guns after a divorce and neglect them!

snake284

Maybe you could set the barrel back a little and redo the chamber.I don't know where the gas tube comes off the barrel at, but for an inch worth it may not make any difference. Setting back and rechambering probably isn't the piece of cake it is with a bolt gun.

edited to Add; Hey, don't those things have a gas tube? maybe that's plugged up with gunk.
Edited again:
Never mind, that was stupid. If it's pulling through the rim, it's got plenty of gas pressure.

calebib

You've got youself a new tomato stake there. I wouldn't waste any more time on it.

Teach

I believe you nailed it with the pitted chamber diagnosis. Those things come in two varieties- - - -the ones that are already junk, and the ones that will be soon. It's definitely not worth a trip back to the factory for a rebarrel, and unless the rest of the gun is virtually unused, it's probably got problems developing with the bolt lockup like most of the well-used ones do. Head a couple of miles offshore in your boat and donate it to Davy Jones!
Jerry

snake284

Wambli Ska wrote: »

Not if the rim got ripped off. Almost positive it's a pitted chamber.

Check my post again. I had my head in a warm, moist, dark place again. The older I get, the more I stay in that place.

:yikes:..........:bang:..........:silly:..........:tooth:

I just found out I may can renew my CHL cheap and I got all excited and the blood was diverted from my head for a while. Then when I came back I saw my post and it hit me like a brick wall,
Like Dumbass!!!

calebib

Teach wrote: »

I believe you nailed it with the pitted chamber diagnosis. Those things come in two varieties- - - -the ones that are already junk, and the ones that will be soon. It's definitely not worth a trip back to the factory for a rebarrel, and unless the rest of the gun is virtually unused, it's probably got problems developing with the bolt lockup like most of the well-used ones do. Head a couple of miles offshore in your boat and donate it to Davy Jones!
Jerry

I just had a 7400 come into the shop about an hour ago. Won't extract. :bang:

At least it doesn't have the bolt lug notches of death.

tennmike

You seem to have diagnosed it right. Pitted chamber locking the case in the chamber. I fix a lot of 'orphan' firearms, but I wouldn't touch that model. They are known for gnawing off/chipping the locking lugs over time.
What I'd do: Contact Numrich Gun Parts and sell it to them for parts. Barrels are few and far between, and the rifle isn't all that and a bag of Cheetos, either. At least selling it to Numrich would bring in some coin towards a decent firearm.

tennmike

calebib wrote: »

I just had a 7400 come into the shop about an hour ago. Won't extract. :bang:

At least it doesn't have the bolt lug notches of death.

I feel your pain. I'd rather have another kidney stone than work on one of those things. Kidney stones eventually pass and you feel better. :silly: :tooth:

calebib

I've got a dead 740 (excess headspace) in the shop that the owner has failed to pick up for about 4 months now. I imagine that is a common scenario in gunsmith shops around the country.

Big Al1

I think all the 742's I fixed payed for a couple hunting trips! The 7400 was supposed to correct the receiver gouging problem when they switched from nine to three locking lugs, and put a guide rail inside the receiver to keep the bolt from torquing to the right. These were designed for the hunter that used the same box of ammo every year, then unloads and puts it away until next season!!

snake284

Big Al1 wrote: »

I think all the 742's I fixed payed for a couple hunting trips! The 7400 was supposed to correct the receiver gouging problem when they switched from nine to three locking lugs, and put a guide rail inside the receiver to keep the bolt from torquing to the right. These were designed for the hunter that used the same box of ammo every year, then unloads and puts it away until next season!!

Their not all junk. My brother in law has a 742 that's well over 50 years old, maybe 60.
He and his three boys have been shooting it every year and it's killed a pile of deer. But in all fairness, they don't shoot it anything like some of us shoot our bolt guns and such. They probably don't shoot two boxes of shells a year. But that thing is accurate for what it is> It will still shoot an inch and a half, two inch 5 shot group and it's not a jammer.

bullsi1911

calebib wrote: »

You've got youself a new tomato stake there. I wouldn't waste any more time on it.

Make a lamp out of it!

snake284

cpj wrote: »

Eventually, it will fail. It's the nature of the 742. They eat themselves.

I realise that, but like Big Al said, some people don't shoot that much and they will probably last a life time with proper care. Some people just love the old Remington SAs.

bullsi1911

Maybe you could put one of those $10 .45ACP barrels on it...

Elk creek

:rotflmao:

shush

bullsi1911 wrote: »

Maybe you could put one of those $10 .45ACP barrels on it...

We're doomed, we're all doomed.

Big Al1

Big Chief wrote: »

Just like a woman to keep a man's guns after a divorce and neglect them!

That's how I met Jerry for the first time! Another friend of the wife wanted to sell off the guns she got from her ex. Jerry road tripped it down here, during a tropical storm, to pick an '03 Springfield with a butt ugly stock!!

tennmike

Big Al, there's ONE possible solution, and I hesitate to suggest it. Depends on how bad you want to get that rifle shooting. You can get a chamber insert to convert it from .30-06 to .308 Winchester. The magazine may be problematic, but the insert should/might/maybe get it back into shooting condition. Depends on how bad the pitting is at the rear of the chamber.

Big Chief

I had a First Sgt tell me at the range on on Fort Hood who was recently divorced the biggest mistake he ever made in that marriage was to give his Ex the combination to his gun safe.................said he would never do it again if there ever was an again.

orchidman

One day I might open up and tell you guys what happened to my firearms in my divorce.........but the scars are still fresh, even though it was 20yrs ago...

Big Chief

orchidman wrote: »

One day I might open up and tell you guys what happened to my firearms in my divorce.........but the scars are still fresh, even though it was 20yrs ago...

Ain't y'all got Common Gun Laws down yonder for the ones the Crown lets you own?

HvyMax

Oooooh Oooooh I'll take it!!! I have a plan for a bullpup to go with my EBR!!! Now I'll need more BAR mags!!!

shush

tennmike wrote: »

Big Al, there's ONE possible solution, and I hesitate to suggest it. Depends on how bad you want to get that rifle shooting........

If we are going the book burning way;

What of the .30-284 Win, that should clean up the chamber.

Just re-thread the barrel and tweek the action.

HvyMax

How much for parts??? That would be a perfect candidate for that 45 caliber thing that uses 30-06 cases.

Big Al1

shush wrote: »

If we are going the book burning way;

What of the .30-284 Win, that should clean up the chamber.

Just re-thread the barrel and tweek the action.

The barrel is not threaded! It slips in, similar to an 870 shotgun, and his held I place by a barrel nut, which is underneath the barrel and slips over a stud on the receiver. The lug recesses are milled into the breech end of the barrel, so any shortening of the breach end and the locking lugs on the bolt will not engage properly. What it boils down to, like most of todays products, when it breaks throw it away.
So far lamp and tomato stake are the best alternatives!!

shush

Big Al1 wrote: »

What it boils down to, like most of todays products, when it breaks throw it away.
So far lamp and tomato stake are the best alternatives!!

I was being somewhat light-hearted but......

jbp-ohio

Watch the news for the next 'Gun Buyback' program and turn it in for $200..........

Elk creek

Big Al1 wrote: »

So far lamp and tomato stake are the best alternatives!!

Tactical boat paddle!

Big Al1

I forgot club! That Uncle Mikes swivel stud could put a dent in your forehead!!

Jayhawker

Jack handle....