Ruger 10/22 Fail to Feed

[BumBum]

I recently mounted a new scope on my Ruger 10/22 and took it to the range yesterday. To my dismay, it now won't feed any ammo whatsoever. The bolt does close all the way when empty. However, when feeding ammo from the magazine, it jams up about halfway. It appears that the bullet head hits the chamber, but it is at an angle and won't go in. Even jiggling and trying to manipulate the bolt does not help.

The magazine is flat, flush, and tight when inserted - no issue there. I did try three different types of ammo and even two types of dummy rounds today. Same issue with everything, no matter what I put into it. There is one screw from the scope mount that is visible above the magazine well, but I double-checked and it is flat and doesn't interfere with the movement of the bolt carrier.

I can't imagine that the scope mounting is causing this, but it is the only change and I've never had any issues prior.

If any insight can be gleaned from this, your help would be very much appreciated.

[Dr. Dimento]

Screws too long ?

Check inside receiver and see if scope mount screws are too long and protruding thru receiver. If so, remove and shorten with file.

[BumBum]

Check inside receiver and see if scope mount screws are too long and protruding thru receiver. If so, remove and shorten with file.

I already did that and they seem fine.

[ojisan]

Did you ever have the scope mount on it before and everything worked OK?
The easiest test is take the scope mount off and see if the problem goes away.

[OldShooter32]

Take scope off and try the feeding. The mount may be putting tension on the receiver...?

[kjv146]

Have you broken it down recently? Something could be in backwards or not set in properly


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[Bill I Am]

A common problem is that some people use lock-tite on the screws for the rails that hold the sights....

[BumBum]

Did you ever have the scope mount on it before and everything worked OK?
The easiest test is take the scope mount off and see if the problem goes away.

Take scope off and try the feeding. The mount may be putting tension on the receiver...?

It worked perfectly prior to this. I just took the entire scope and mount off and the problem still exists.

[ojisan]

With no magazine in it, does the bolt move smoothly the full length of its travel both ways?

With an empty magazine in it, does the bolt move smoothly the full length of its travel both ways?

When the bolt is locked back and the magazine is in the gun, does the mag have some wiggle to it even though it is fully latched in?

[BumBum]

With no magazine in it, does the bolt move smoothly the full length of its travel both ways?

Yes

With an empty magazine in it, does the bolt move smoothly the full length of its travel both ways?

Yes

When the bolt is locked back and the magazine is in the gun, does the mag have some wiggle to it even though it is fully latched in?

Very little

I also took the stock off and took the trigger assembly out, everything inside looks to be in place to me - *although I am no expert.

[BumBum]

Not sure if this helps, but here are a couple of crappy cell phone pics:

jam 1.jpg

jam 2.jpg

[mycrstuff]

Take the firing pin out of the bolt and clean it. When you use a cleaning rod from the muzzle you push all the crud into the bolt face. The firing pin channel gets clogged and the firing pin does not retract all the way. With the firing pin sticking out the bolt picks up the round at an angle and the bullet nose will hit right above the chamber. I found this out the hard way.

[BumBum]

Take the firing pin out of the bolt and clean it. When you use a cleaning rod from the muzzle you push all the crud into the bolt face. The firing pin channel gets clogged and the firing pin does not retract all the way. With the firing pin sticking out the bolt picks up the round at an angle and the bullet nose will hit right above the chamber. I found this out the hard way.

I took the bolt apart and cleaned everything. Firing pin, extractor, everything. Still no dice.

[johnyreb]

Did you try cycling with pressure on the mag? Like pressing the mag up with your thumb as you cycle the bolt.

[BumBum]

A friend of mine helped me out and I think it might be fixed now (I hope!). He was fiddling around with it and I'm not sure exactly what was done, but it appears I may have been having an issue with the bolt hold open. It appears that it wasn't properly disengaging, causing the bolt to hang up when attempting to feed a round. Now it is clicking in and out of place more definitely, and it is feeding the dummy rounds ok. Let's hope it works with real ammo.

Thank you everyone for your responses.