Rem 742 hard to extract shell

[RT]

Remington 742 .308 cal.

I completely dissaembled the rifle and removed the firing pin as this rifle will now be used to teach PAL courses with.

Once I reassembled and lubricated the complete rifle it cycles fine by pulling the bolt. When I put a round in the chamber its almost impossible to pull the bolt back again. If I give the bolt a couple taps with a hammer I can pull the bolt back and it will eject the round.

I gave the chamber an extra cleaning and the problem still there.

Any ideas what the problem is?

 

[bWONGER]

Are you using a fired brass casing? If so, was the casing fired from this rifle? Not all chambers are the same size, so if you are chambering a casing that was fired from a different rifle it can be difficult to both chamber and extract it.

 

[OneBarfly]

They do have a reputation for wear to the bolt rails and jamming. On the 30-06 I had, you could see the chatter marks on the inside of the receiver where the bolt would hit it. I sanded down the marks so the action would cycle more reliably and then gave it to a friend for parts.

 

[RT]

Ive never actually fired the rifle. Its a reloaded round. I took the barrel off and the round dropped freely into the chamber after i recleaned it. The problem only seems to occur when its loaded thru the normal cycling process.

 

[Dosing]

Any marks on the casing, like from the neck being tight or the casing rubbing on the chamber

 

[kodiakjack]

Ive never actually fired the rifle. Its a reloaded round. I took the barrel off and the round dropped freely into the chamber after i recleaned it. The problem only seems to occur when its loaded thru the normal cycling process.

Try it with a factory round.

 

[RT]

Yes, the case does appear to have marks from being chambered.

 

[teknition]

"paint" the round with a black sharpie permanent marker and cycle it thru the action. Check for bare brass spots on the round to see if the is causing the problem.

 

[CZ_Brno]

I had the same problem with reloads on my 742. Yet it worked fine with factory ammo. You may need a Small Base Die Set.

 

[RT]

Ill see if I can round up some Azooms and try them.

 

[gunrunner100]

Definitely try a small base die reloaded brass for this.
Another thing to try is remove the barrel and hone the chamber with a tight fitting brush, 0000 steel wool and light oil. Remove the oil once done. Notorious rifles for dirty, rusted chambers.

 

[RT]

Problem solved.
Bought a couple Azoom dummy rounds today. They cycle just fine. I guess the other dummy rounds wernt sized properly.