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Ruger SR 762 Problems

159K views 522 replies 68 participants last post by  clownbow 
#1 ·
I just got My New Ruger SR 762 and well mine has a Failure to feed problem, I think it is a Mag problem it does not want to chamber a round & that is if you load a round by hand or fire a round, it flat will not feed without jamming or not loading a round in the chamber. I have yet to get more then 1 shot of without this happening,Oh and sometimes the bolt stays halfway open without loading a round into the chamber it seems to be hanging up on the Mags. Does anybody else if they have this gun have this problem? I found a post elsewhere that at least 2 to 3 others are going through the same thing. Man I never buy the first run of guns when they come out, but I was in the market for a 308 and said what the heck & now I have a gun with a feeding problem. I called the place I got it from & they said they will contact the distributor for Me on Monday as it has a Lifetime Replacement on it. But I just want a gun that Shoots without Bugs. I'm using Federal XM80C FMJ Ammo & not Wolf or anything.

Let Me know if any of you have heard or seen of this problem with the Ruger SR 762
 
#62 ·
Joined the forum just for this thread!!

Anyways, I picked up a SR 762 last week. Shot it today, and was kind of disappointed.

Had hoped that the issues were worked out, but my gun is one of the ones with problems.

Came with 3 DPMS metal magazines, and I bought 1 Gen3 Pmag just to try it out.

Took it to the range and had multiple malfunctions...one right after the other.

Bolt hang..failure to feed....failure to lock back.....seemed to extract ok, but would frequently not pick up the next round....and I tried all the piston settings.

And, I had to almost max out the windage to zero the rifle.

Although, this is my first 308 AR...I do have other AR's, so I'm familiar with getting one running, so I'm disappointed.

Called up customer service, and was told by the girl that the problem is with the magazines (the DPMS magazines)....and that if I sent in my DPMS magazines, they would replace with PMags....and I'm thinking..WTF.

Wound up just taking it back to my guns store to let them handle it....

Hope it all works out.
 
#63 ·
Out of curiousity what range were you trying to zero at?

Though it had a few FTEs dinging a couple cartridges along the way, I ended up bathing the BCG with CLP and after about a hundred rounds it settled in. It did not like pmags at all for the first 100-200 rounds or so, now it doesn't care, it'll empty DMPS mags or Pmags quite readily now.

I guess I'm just a little more stubborn that some, the gun is running fine now, I just need to work on my groups at 200 yds. also, I don't see any wear patterns developing from the carrier yet. On a side note I put in a badass (I'm a lefty) a RRA NM 2 stage Trigger, Precision Armament M11 Muzzle Brake, and an MTAC Scope.... WOW!!! what a difference!
 
#65 ·
Sorry to hear about that bud. One thing I'm glad about is that there is an easy way to clock the hand guard with the 762. My 556 has the picatinny guard that is roll pinned and unmovable. They will fix it... Famous last words.

DSW308, my set up is a JP trigger and factory springs. The pull is 4 3/4 pounds but crisp. I have an AAC non mount brake and a Redfield Revolution 2x7 with accurange reticule. The good thing about this reticule is that once you get it set for a 200 yard zero shooting to 500 is fairly easy. Which is good for this rifle.
 
#67 ·
sharp edges on star at the end of ramps

I noticed several things about my new SR762.
Not had a chance to shoot it yet, but when cycling the bolt with the charging handle and using dummy rounds in the Pmag2, they chamber fine, but on extraction there is a great deal of initial drag. The bullet shows a spiral scratch, and so does the front of the case body followed by a straight scratch.
Examining the star under a bright light, I can see that where the two feed ramps converge at the chamber side of the star, one star finger has been ground away to a sharp point. Loading slowly, I can see that the sharp point is dragging on the bullet and the spiral is from the bolt rotating as it closes. The sharp point also is scratching the case.
I think that on extraction the sharp point is dragging on the case and slows the extraction. I could fix it but I prefer to have Ruger do it, if the rifle has any hiccups on shooting it. Which I hope to do next week.
 
#69 ·
I sent my SR762 rifle back to Ruger a few weeks ago, and got it back last Monday the 20th. I had FTF and FTE issues, and didn't want to have any chance of this happening to me if I really needed to use the rifle in a SHTFS.

I returned the rifle to them with the 3 magazines that it came with, but it was returned back to me without them. After calling them they finally sent them back last Thursday, but with lots of aggrevation. It shouldn't have to be this difficult.

They replaced the upper reciever and polished the feed ramp. I have yet to shoot it, but as soon as the magazines are back I will range test it right away. Very disappointed in Ruger's customer service and quality. Then need to take ownership of this problem and address it head on.

Very frustrating.
 
#72 ·
Could this be the root cause of the problem?

I still think that this is part of the problem - the sharp lug.
The sharp point on the top of the lug is digging into the bullet and brass both on loading a round into the chamber, and I believe it is causing slow extraction when the case drags on the sharp edge, which in turn can cause a fail to feed, and (because too much energy of the bolt is used up dragging out the empty case.)
If you have been having FTF, or any other feed problems, would you look over the ejected cases, and see if you have scratches or drag marks on the case and put your observations in this thread.
Thanks.
 
#76 · (Edited)
[/QUOTE]

Nothing remotely close to your wear, jh225. There was either a burr or sharp edge on your carrier or the receiver was machined badly, it's hard to say. Before I sent the rifle back there was a feeling of machine marks (similar to dragging your finger nail over a metal file). The most obvious location of these machine marks on my old carrier was on the right hand bottom portion. It took brass off of the top right round when it cycled over it. The new carrier is smooth and free from machine marks.

On your image, Gabbyone, the upper two or the lower and upper two corners are impact points for the neck of the brass upon ejection (you can easily tell by the brass residue on the suspect corners). An easy way to get an idea of the strike areas is to load an empty fired shell into the chamber, close the bolt and then slowly pull the bolt back to the point of the cartridge slipping out of the chamber and it will strike the star. If these areas don't have the corners broken, you will have one or two pings on the neck. They are not of severe concern. But I am a reloader and I don't like abused cases if I can avoid it.
It may just be that my rifle hasn't fully broken in yet and doesn't cycle fast enough to have the neck clear the star before it is fully ejected from the rifle.
 
#77 · (Edited)
Another sr762 jammer

Sadly I traded in my Remington model 750 35 whelen for the Sr-762. I thought I would be rid of an annoying gun that doesn't feed well. I took my SR to the range today and right off the bat it failed to close all the way. It closed far enough for me to hear the trigger/ hammer strike but no bang. Upon pulling the charging handle it fails to grab the bullet and extract. I have to remove the mag and let the handle cycle again. Then it fires once and then fail to properly load the next round.
after reading this post I bought a promag 308 mag. I took it home and was able to fire 3 rounds off my deck. Hope to range it tomorrow without issue. Thinking I should have bought the DPMS SASS...


Rugers I own: two 10/22's, SR40, GP100,SR-762.
 
#78 ·
I am new to this forum and feel bad that my first post is not a happy post. I purchased a new SR 762 a week ago. I have had nothing but problems....most of which are already documented in this thread. My serial number is 016..So it was probably built in September. It was sold to me by the new Frisco Gun Club in Texas. They held it in storage until the facility opened recently and I was the "unlucky" person who bought it. It is the only AR style .308 I've ever had trouble with new out of the box. I do not think it is unreasonable to expect an item that costs upwards of a $1,000 to work properly. It has been sent back to Ruger and will probably not return for 3 weeks or more. This being my first Ruger rifle I would be hard pressed to ever buy a second Ruger. Early model or not this gun was not properly vetted or tested. There are way too many issues for one weapon. Sadly I could not recommend this weapon to anyone. Hopefully time will prove me wrong.
 
#79 ·
Welcome from the Texas Panhandle. I imagine Ruger will make it right for you. It does suck to wait though.
 
#82 ·
I paid $1375 for it as my club was getting rid of most rifles at $5 over cost to make room for new inventory coming in. Owner does not like to sit on inventory long and smartly turns it over to make room for new stuff.

I'm sure Ruger will make it right but it's hard to imagine that they didn't know about this stuff before they shipped the first unit out in October 2013. Too many issues for one gun to have. Magazine issue alone is cause for concern as Magpul Gen 3 doesn't work at the moment so what do we do in the future when we need more mags?

I guess the moral of the story is never buy a new model of any gun until a year has passed since it was introduced.
 
#85 ·
My son just bought a 762 with the metal DPMS 20 round mags and the first time he took it to the range he had a problem with one mag and FTF. He was reduced to single shot with that mag but he kept doing it. He wanted me to come take a look at it while he was at the range. When I got there he had 5 rounds left (15 total through the rifle at that point). He used the flawed mag and it shot fine. I did noticed that the followers on all three of his mags were chewed up a little on the highest ridge. He's off shore now but when he returns and we go shoot I'll give an update.

Steve
 
#86 · (Edited)
Hello everyone!
I'm new to using the forum but have lurked for quite sometime. I thought I'd throw in my 2 cents on this rifle. I'm a long time Ruger owner of all types. I have a law enforcement background and am a certified armorer in several weapon types. 7.62/.308 has always been my caliber and rifles of choice, including HKs, FALs, a Galil, numerous Remington 700 bolt guns, FNH SPRs and SCAR 17s.
I just purchased a new SR762 (serial # range in the low 4000s) and am very pleased with it. It shipped with 3 steel DPMS steel mags and included the note that they were best suited to the rifle. I own several 2nd Gen PMags so I thought I'd try them out. NO failures what so ever. I have not tried Gen 3 mags yet.
So far I've shot S. African and Portuguese surplus. Function was fine with both but had to adjust the setting to 3 for the SA. 60 rounds downrange as of this writing. Could be it was still kind of stiff being new. The Port was exceptionally accurate in this rifle producing 1 & 1/2" groups at 100m (1.5x5 Luepold VXIII on a LaRue mount). My next outing will include 168gr. Black Hills match, FGMM, and anything else I can dig out.
Some of these rifles may be having trouble no doubt but, I'm sure Ruger will work it out on those. Thankfully mine has no issues at all. I believe the SR762 to be a fine rifle that will perform right along with some of the higher dollar rifles.

Keep your chins up, it's a great rifle.

I am in NO way affiliated with the Ruger Co., just an end user of their product.
 
#87 ·
Welcome from up in the Panhandle, Tex. Sounds like you've got yours dialed in.
 
#88 ·
Rifle arrived yesterday after 3 weeks turnaround from Ruger while they replaced upper, polished chamber/feed ramps, safety function checked and test fired. I suspect they replaced the FCG as well because the trigger pull is now > 8 lbs. and was 5.5 lbs. when shipped to Ruger. Ran three full mags of M80 downrange today without hiccups and sighted in BUIS. Waiting for Loctite to set up on Bobro threads to sight in the VX6 1-6. Will run her out to 600 in the next few days.
 
#92 ·
more 762 feed problems

I too am having feed problems with the SR 762 and p-mag. I called cos. serv. and the guy was a real prick. Said my only option at this time was to send in the 3 P-Mags for replacement with 4 DPMS metal mags. Even if I don't see any problems with the new mags I'm not sure I could ever trust this rifle as an only means of defending myself. Too bad because I really like the feel of it.
 
#93 ·
I too am having feed problems with the SR 762 and p-mag. I called cos. serv. and the guy was a real prick. Said my only option at this time was to send in the 3 P-Mags for replacement with 4 DPMS metal mags. Even if I don't see any problems with the new mags I'm not sure I could ever trust this rifle as an only means of defending myself. Too bad because I really like the feel of it.
Get the new mags and run a couple of hundred rounds through it. That will build your confidence in the rifle back up.

:D

Steve
 
#95 ·
another 762 concern

First off, thanks to all that replied on the feed issue but I have another concern. While trying to figure out the feed problem I manually cycled several rounds through the gun with the charging handle. When I reloaded the mag I noticed all the rounds had a dent on the primer from the firing pin. This was not just a scratch and I am concerned about accidental discharge. Anyone ever see this before?
 
#96 ·
First off, thanks to all that replied on the feed issue but I have another concern. While trying to figure out the feed problem I manually cycled several rounds through the gun with the charging handle. When I reloaded the mag I noticed all the rounds had a dent on the primer from the firing pin. This was not just a scratch and I am concerned about accidental discharge. Anyone ever see this before?
That happens will ALL ar-15 style rifles where the firing pin is not spring tension-ed.

5.56 and 7.62 rifles.

And yes...discharges is a possibility with "soft" primers.

What you see is perfectly normal.
 
#98 ·
Thanks. That's good to know. I'm surprised I never saw it before. On another note, Ruger just contacted me. They want my rifle and are having UPS pick it up Monday. I'll keep everyone posted on what happens. Thanks to all for the helpful info.
That's interesting...did they email you after you sent in your magazines? asking you to send in the rifle....or did you just wait for them to get back to you?

When I called, I got the same response you got..."send in the magazines"....I balked, and insisted they take the rifle....got them to agree, but I had to send it in on my dime....

I thought about it, and just took it back to my dealer and had them send it back.
 
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