DPMS Hunter G2 308 problem

[bubbas4570]

dtom, the guys here will steer you in the correct direction. You have already seen that.

Now as far as selling the DPMS at a loss just to reinvest in another product from that conglomerate (sister corporations) is making my spidey sense tingle. Look at it this way, how kuch money do you think you will lose by selling the 308AR at a loss, purchase a new ar15,  and then start aquiring new mags and such; as opposed to just (worse case senario) having to purchase a few Lancer mags at higher price than Magpul? Just figure out the dollar amount lost in selling, the dollar amount (difference in Lancer vs. Magpul) spent on the same number of magazines you were thinking of (and you might not even need to buy the Lancer's....) and how much you will need to get into whatever ar15 model you want.

 

I just like playing devils' advocate when I am not the one wanting to jump out of a rifle and into another...

[mrmackc]

15 hours ago, dtom said:

thank you all for the help... I will keep posting follow ups and updates. I am gonna gather all the your advice and try to narrow down the problem. i never owned an ar before. thats my first. all i own is a shotgun and a 10/22 ruger lol.

on the other side of the coin, my local indoor range told me that i can no longer shoot anything higher than a 223 otherwise i was heading over there tonight after work. new policy as of last weekend. people who shoot pistol complained apparently about heavy calibers. whatever, i am gonna check out this outdoor range this weekend and i will post a follow up. thanks again for all your advice and help..

Yep,, get off the internet, oil up that LR308 and get out to the range with some168gr.. and  and some Federal M80 and the original magazine first load 3 rounds and see what happens

Now,  did you buy this rifle new in the original box from a gun dealer? or from a shooter, why did you first try an aftermarket magazine?

Edited August 24, 2016 by mrmackc

[mrmackc]

I forgot, have you had the buffer and spring out of the tube, to check if itis clean and lightly oiled? did you have the bolt out of the carrier and oiled the gas rings and bolt? I'm just trying to help you prepare the rifle for a break in type of shoot.

[HotRod308]

Here goes 2 cents of a opinion. I would have to say you have a probllem with not enough gas to ensure the BCG cycles to the rear to either lock or feed the next round in. That being said, the gas starts at the gas port in the barrel. It could of been drilled wrong or the wrong size. Or there is a big gas leak some where.

Both the 150 and 168 both run 50,000 cups of pressure, plenty enough to cycle the BCG.

Send the rifle back is my vote. it doesn't make sense that 18 grain difference in weight between the two bullets is the problem.

[Quentin]

dtom, I hope your range session this weekend goes well. Or at least you narrow down the problem. You've gotten good advice and lot's of things to test. Let's hope this is just a break in issue. I wouldn't sell the rifle for a loss, working with DPMS to get it right makes more sense.

As far as getting an AR-15, I'd never talk you out of that since I enjoy the ones I have. But how about in addition to (not replacing) your 308! There are advantages to both calibers, of course only you can determine what you need.

By the way, the way you've answered every question we've asked really has been helpful. Sometimes the OP is lazy and doesn't go to the lengths you have to make things clear. If you do have to pursue more CS at DPMS, maybe have your own script written before the call. Have everything pulled together and stay a step ahead of an uninterested tech.

[washguy]

D  take your cell phone camera and if you have ftf or fte probs take a pic ...remember one cartridge in the mag  to fire and see if bcg locks back...the bcg has to be held by the boltcatch...always the first thing to check       Wash

[dtom]

On 8/23/2016 at 8:59 PM, bubbas4570 said:

dtom, the guys here will steer you in the correct direction. You have already seen that.

Now as far as selling the DPMS at a loss just to reinvest in another product from that conglomerate (sister corporations) is making my spidey sense tingle. Look at it this way, how kuch money do you think you will lose by selling the 308AR at a loss, purchase a new ar15,  and then start aquiring new mags and such; as opposed to just (worse case senario) having to purchase a few Lancer mags at higher price than Magpul? Just figure out the dollar amount lost in selling, the dollar amount (difference in Lancer vs. Magpul) spent on the same number of magazines you were thinking of (and you might not even need to buy the Lancer's....) and how much you will need to get into whatever ar15 model you want.

 

I just like playing devils' advocate when I am not the one wanting to jump out of a rifle and into another...

i see your point. I got frustrated a little. my bad..

[dtom]

On 8/24/2016 at 0:19 AM, mrmackc said:

Yep,, get off the internet, oil up that LR308 and get out to the range with some168gr.. and  and some Federal M80 and the original magazine first load 3 rounds and see what happens

Now,  did you buy this rifle new in the original box from a gun dealer? or from a shooter, why did you first try an aftermarket magazine?

i baught it brand new from  a gun dealer... and yes i lubricated the heck out of it.

[dtom]

again thank you all for your advice and time.

here is the updates......

i went to the range with a box of 147gr remington, 150gr winchester, 168gr federal and a 180gr winchester X and a can of ballistol.

i loaded the pmags with 3 rounds each. and here is what happened....

147gr.... 3 didn't feed

150gr.... 2 cycled, 1 jam, bcg didn't lock back

168gr..... 3 cycled, bcg didn't lock back

than i broke the rifle open and sprayed the bcg, the rails and everything, i sprayed so much and thought it was gonna catch on fire. as a matter of fact the range officer didn't like what i was doing and he said that what i was doing was against the rules. i guess i should have asked before i opened the rifle, but thats beside the point.

back to

168gr...... 3 cycled, bcg locked!!!!!!!!!!!!!!!!!!!!

again

168gr....3 cycled, bcg didn't lock back

180gr.....3 cycled, bcg locked!!!!!!!!!!!!!!!!!!!!

again 180gr....3 cycled, bcg didn't lock back

again 180gr....3 cycled, bcg didn't lock back

again 180gr....3 cycled, bcg didn't lock back

so it locked it locked back once on 168 and 180 and that was it. now what.

well i can say one thing, the problem can't be the magpul mags, that made my day ( thats at least what i think)..it is either the rifle needs to really brake in or i have a buffer and spring or gas issue. 

[COBrien]

Did you try the DPMS mag?

[dtom]

29 minutes ago, COBrien said:

Did you try the DPMS mag?

i totally forgot about it. i know i should of.

[shepp]

Sounds like a gas issue to me, more than a mag issue

Edited August 29, 2016 by shepp

[shepp]

Or a different lube? But I'm just a weekend tinkerer

[COBrien]

The reason I keep asking about the DPMS mag is this:

If the rifle isn't running right with the DPMS mag and 168+ grain ammunition, the techs at DPMS won't have any excuse to get away from warranty work.

Edited August 29, 2016 by COBrien

[mrmackc]

You won't know for sure until you use the DPMS magazine. 

Clean the rifle again before you go back to the range and just before you go, maybe the day before break the rifle down, pull and clean the BCG a piece at a time check the ejector, extractor . Pull the buffer and spring,  checking for burrs and wear. and when you go back lube liberly to point of wetting as you reassemble the parts, also swab the inside of the upper (except the chamber and bore!) with Mobil 1 synthetic motor oil.  and go to the range with the DPMS magazine.

[survivalshop]

  147 gr. Ball ,FMJ didn't feed ? Do you mean they would not feed & chamber or they would fire & not cycle the action to feed the next round from the mag ?

  I don't believe its a Mag. issue also , but as has been said , try the DPMS Metal Mag . just for the fun of it .

 Take a bright flash light or something & look into the Chamber & see how the chamber walls look like , your looking for any kind of roughness or rings on the walls . Can you take a photo of the spent brass , side walls ?

 Most Ranges do not allow you to disassemble a firearm on the line or during no fire times when checking /changing Targets .

[ARTrooper]

1 hour ago, COBrien said:

If the rifle isn't running right with the DPMS mag and 168+ grain ammunition, the techs at DPMS won't have any excuse to get away from warranty work.

COBrien is right, if simple things can't fix it, do what DPMS wants and then make them take care of it after it continues to fail under their directions. Messing with the gas system if that is the problem could lead to an oops. You have a warranty, use it and let them have the headache, and if they can't get it to function properly, they will probably replace it. Don't do anything to void the warranty.

If they recommend a certain type of lube, use it. don't over lube it, it's not like a military machine gun, it shouldn't need to be bathed in lube and DPMS might blame it on that just to take the blame off them.

[ARTrooper]

On ‎8‎/‎22‎/‎2016 at 4:56 PM, COBrien said:

As far as DPMS's customer service is concerned, I've had a bad experience myself. I called and asked them if it was safe to run .308 Win through my rifle (barrel is marked 7.62, lower is marked .308). One tech said "run what the barrel is marked," another said "run what the lower is marked," but when asked about chambers, their response was complete silence. They also gave me the spiel about 168+ grain bullets. I later called looking for a rifle-length handguard, and was advised they no longer produce, stock, or supply OEM parts for the G1 rifles because the G2s are out now. So those of us who have G1 rifles are SOL if we want G1-specific DPMS parts. No idea what they will do if a G1 comes in for warranty work...

.308 Win ammo should work in a rifle chambered for 7.62 because of 7.62's lower tolerances. 7.62 ammo does not work in a rifle chambered in .308 Win though. goes along the lines of .223 works in 5.56 but 5.56 doesn't work in .223.

As for the one tech going off of what the lower says, he's a complete idiot. as long as the lower is able to function with the upper, it doesn't matter what ammo type it says. what is important is what the rifle is chambered for. where do they find these "techs". lol.

 

[COBrien]

2 minutes ago, ARTrooper said:

.308 Win ammo should work in a rifle chambered for 7.62 because of 7.62's lower tolerances. 7.62 ammo does not work in a rifle chambered in .308 Win though. goes along the lines of .223 works in 5.56 but 5.56 doesn't work in .223.

As for the one tech going off of what the lower says, he's a complete idiot. as long as the lower is able to function with the upper, it doesn't matter what ammo type it says. what is important is what the rifle is chambered for. where do they find these "techs". lol.

 

Looking back now, I wasted several days worrying about what to feed my rifle. It runs just fine on 7.62 and .308 factory ammo.

I was just giving that as an example of how DPMS's "techs" simply read from a script and/or shoot from the hip (and get it wrong...).

[ARTrooper]

1 minute ago, COBrien said:

It runs just fine on 7.62 and .308 factory ammo.

yup, because yours is chambered for 7.62 like you said. that has a lot of advantages. but I'm not sure if the looser tolerances in 7.62 affect accuracy at all or not.

but yeah, definitely a bunch of script readers, like calling your internet company when your internet is down and you get someone in India telling you to unplug your router for 30 seconds and then plug it back in.

[survivalshop]

  Ammo type makes no difference , except for the possibility of the 308 having a higher CUP max.per SAMMI spec's , doesn't mean it does .

1 hour ago, ARTrooper said:

.308 Win ammo should work in a rifle chambered for 7.62 because of 7.62's lower tolerances. 7.62 ammo does not work in a rifle chambered in .308 Win though. goes along the lines of .223 works in 5.56 but 5.56 doesn't work in .223.

As for the one tech going off of what the lower says, he's a complete idiot. as long as the lower is able to function with the upper, it doesn't matter what ammo type it says. what is important is what the rifle is chambered for. where do they find these "techs". lol.

 

308 & 7.62x51 ammo are the same size dimensionally , chambers are the difference & not much at that . I have been shooting both in both chambers for forty years with out an issue .

[dtom]

3 hours ago, survivalshop said:

  147 gr. Ball ,FMJ didn't feed ? Do you mean they would not feed & chamber or they would fire & not cycle the action to feed the next round from the mag ?

  I don't believe its a Mag. issue also , but as has been said , try the DPMS Metal Mag . just for the fun of it .

 Take a bright flash light or something & look into the Chamber & see how the chamber walls look like , your looking for any kind of roughness or rings on the walls . Can you take a photo of the spent brass , side walls ?

 Most Ranges do not allow you to disassemble a firearm on the line or during no fire times when checking /changing Targets .

147 gr didn't feed (or chamber) the bcg didn't feed the next round but it ejected it...

[dtom]

i am heading to the range this friday.. i will take the dpms mag and try it again with different bullet grains.

thank you all for your advice and time

[98Z5V]

How many rounds have you fired through this rifle, total, now?...

 

 

[392heminut]

Box it up and send it back to DPMS and let them deal with it. It's a new rifle and you shouldn't be having to deal with all the problems you're having!