Stag 10 , 6.5CM 24" , problem with ejection

AMET

AMET

Regular
Rating - 100%
99   0   0
Location
Strath-vegas
So I bought a Stag 10 in 6.5CM with the 24" barrel and I seem to have lots of problems with Match ammo. More specifically Hornaday ELD Match.

*This is not a built gun, just factory.*

I don't seem to have any problems with American gunner by Hornaday. It seems to not have enough pressure to eject and I get the case ramming into the ejection port or just staying in the chamber and not ejecting. Anyone else seem to have this problem?

I have heard some people having to open the gas port on their barrels but I'm trying to find a buffer and spring for the 308 rifle length to change it to a A2 stock first. But I'm not sure if this will fix it. Any suggestions are appreciated.

Also. I have cleaned it and running it very wet like all my other AR's.

*UPDATES* - For people not wanting to read whole thread....

1 - Checked the gas block. Although the screws on the handguard was a mix of over tightened and very loose. The gas block seems fine, and was aligned from the factory.

Also I forgot to mention I switched the gas rings on the bolt and got the same result.

2 - So i believe my problem is over gas. i tried using bullets at 140 grain, and anything over 2680 FPS i start getting problems. So the higher pressured "Match ammo" i get FTE,Stovepipes, and crushed rounds almost every shot.

Im looking for an adjustable Gas block now to try and fix this

3 - Not sure, my Stag 10 bolt is very stiff in general. gas rings are pretty tight. Im also talking about a 6.5 CM and with 168 Grn im assuming your talking about 308.

I have also changed my gas rings without much luck. (in case someone asks.)

4 - Rims are not ripped off. This is the biggest problem i have. the cases wedging themselves between the bolt face and edge of the receiver. i also get cases in the chamber and not ejecting both backwards and forward in the chamber, another one is i get the odd stovepipe (Both ways)

qGbAJLY.jpg
 
Last edited:
I'm not sure what's causing the ejection problems but I'd start with making sure the gas block is aligned properly and not partially blocking off the gas port. It's been a common issue with the factory Stag rifles.

Also it's not uncommon for 1 or 2 types of ammo to work fine but the third type wont. The ammo that isn't working may be producing slightly less pressure than the others.

Also if you're switching to a rifle length receiver extension you don't need to spend the money to get a rifle length buffer and spring. You can still use the carbine length buffer and spring that you already have. All you need to do is add a spacer in the back of the buffer tube.

Brownell's sells the proper delrin spacer. It's the same one that comes with the JP Enterprises SCS system but I think you have to search under Rock River Arms on the Brownell site to find it. It's only $12.99. I've switched a few rifles from carbine to rifle tubes and only added this spacer and had no issues.
 
Checked the gas block. Although the screws on the handguard was a mix of over tightened and very loose. The gas block seems fine, and was aligned from the factory.

Also I forgot to mention I switched the gas rings on the bolt and got the same result.
 
Try different ammo.
Number one thing I do when troubleshooting any semi auto that isn't cycling correctly is try different ammo. Hopefully you find something that it likes then once it loosens up a little it may start cycling the Hornady stuff later.

Also, try shooting 130gr projectiles, the heaviest bullet with the best BC isn't what a semi auto is looking for, These are designed for a certain bullet weight and pressure pulse, don't think of it like a bolt action where all you do is look for the heaviest projectile your twist rate can stabilize and a nice BC.
Your problems don't sound like they are caused by too heavy of a load but your rifle obviously doesn't like that ammo. Try the Hornady 130 Superformance, those were quite hot in my Modern Hunter so they should cycle your rifle.

Good luck
 
So i believe my problem is over gas. i tried using bullets at 140 grain, and anything over 2680 FPS i start getting problems. So the higher pressured "Match ammo" i get FTE,Stovepipes, and crushed rounds almost every shot.

Im looking for an adjustable Gas block now to try and fix this
 
Why is it, that some rifles are over gassed. And some not?
Are the gas port holes different diameters?

I’ve built two and it cycled five or six different kinds of ammo, from 150g to 168 g.

Even the cheap Winchester soft points were reliable,

The only thing I noticed in my two builds , was that the Stag BCG was very stiff to pull back, compared to my Brownells BCG.
And I was using the same buffer and spring.
 
Brianma65 said:
Why is it, that some rifles are over gassed. And some not?
Are the gas port holes different diameters?

I’ve built two and it cycled five or six different kinds of ammo, from 150g to 168 g.

Even the cheap Winchester soft points were reliable,

The only thing I noticed in my two builds , was that the Stag BCG was very stiff to pull back, compared to my Brownells BCG.
And I was using the same buffer and spring.
Click to expand...

Not sure, my Stag 10 bolt is very stiff in general. gas rings are pretty tight. Im also talking about a 6.5 CM and with 168 Grn im assuming your talking about 308.

I have also changed my gas rings without much luck. (in case someone asks.)
 
Brianma65 said:
Why is it, that some rifles are over gassed. And some not?
Are the gas port holes different diameters?

I’ve built two and it cycled five or six different kinds of ammo, from 150g to 168 g.

Even the cheap Winchester soft points were reliable,

The only thing I noticed in my two builds , was that the Stag BCG was very stiff to pull back, compared to my Brownells BCG.
And I was using the same buffer and spring.
Click to expand...

Gas port holes could be all over the place, depending on the manufacturer of the barrel. If you're referring to STAG only... hopefully the gas ports are obviously more consistent.

As mentioned above as well - buffers are an easy way to change things up. LMT recommends and uses H3 buffers in their guns.
 
Twan said:
Gas port holes could be all over the place, depending on the manufacturer of the barrel. If you're referring to STAG only... hopefully the gas ports are obviously more consistent.

As mentioned above as well - buffers are an easy way to change things up. LMT recommends and uses H3 buffers in their guns.
Click to expand...
I don’t see this as a G/B issue.

If so , then all rifles should perform the same.
Either the holes are not lining up or there’s a problem with the BCG or the Buffer spring.

As I said, you almost needed a Popeyes arm , to charge my first build, with Stag BCG.
Second build was way easier to charge, using a Brownells BCG.

But neither was having gas issues.
 
Brianma65 said:
I don’t see this as a G/B issue.

If so , then all rifles should perform the same.
Either the holes are not lining up or there’s a problem with the BCG or the Buffer spring.

As I said, you almost needed a Popeyes arm , to charge my first build, with Stag BCG.
Second build was way easier to charge, using a Brownells BCG.

But neither was having gas issues.
Click to expand...

I agree... it wont likely be the Gas Block at all. To clarify my statement.. I didn't mean they could be all over the place in terms of alignment/location on the barrel.. I mean depending on the barrel at use here, the diameter/size of the gas ports can be all over the place.

My statement about the H3 buffer pertains more-so to retarding the bolt in it's rearward travel. If it is indeed getting so much gas that the individual is seeing the stated problems, the heavier buffer can certainly contribute to taming that. Different recoil springs can of course as well.

As for bolts/carriers, I can't comment as my experience is only with using LMTs .308 bolt/carrier. They're beautifully made, and I've had no problems to compare it against.
 
Wouldn’t the OPs issues be from under gas?
Therefore a lighter buffer and spring would be needed?

Maybe that’s why the bolt is hard to pull back?
 
Brianma65 said:
Why is it, that some rifles are over gassed. And some not?
Are the gas port holes different diameters?

I’ve built two and it cycled five or six different kinds of ammo, from 150g to 168 g.

Even the cheap Winchester soft points were reliable,

The only thing I noticed in my two builds , was that the Stag BCG was very stiff to pull back, compared to my Brownells BCG.
And I was using the same buffer and spring.
Click to expand...

The 6.5 Creedmoor has a higher gas port pressure. The area of a 6.5 is 27% smaller vs 308 (0.055 sq in vs 0.075 sq in) and combined with slower burning powders.
 
Just fixed my short stroking stag 10 6.5cm with a slightly longer Armalite gas tube , just started a thread about it . I thought AR15 gas tubes were long enough but i guess not for my Faxon barrel ??
 
griffin86 said:
Are the rims ripped off? Case head swipe on the head of the brass? I believe you might be overgassed.


EDIT: I didn't see that this was from Dec 15th.
Click to expand...

Rims are not ripped off. This is the biggest problem i have. the cases wedging themselves between the bolt face and edge of the receiver. i also get cases in the chamber and not ejecting both backwards and forward in the chamber, another one is i get the odd stovepipe (Both ways)

qGbAJLY.jpg
 
AMET said:
So I bought a Stag 10 in 6.5CM with the 24" barrel and I seem to have lots of problems with Match ammo. More specifically Hornaday ELD Match.

*This is not a built gun, just factory.*

I don't seem to have any problems with American gunner by Hornaday. It seems to not have enough pressure to eject and I get the case ramming into the ejection port or just staying in the chamber and not ejecting. Anyone else seem to have this problem?

I have heard some people having to open the gas port on their barrels but I'm trying to find a buffer and spring for the 308 rifle length to change it to a A2 stock first. But I'm not sure if this will fix it. Any suggestions are appreciated.

Also. I have cleaned it and running it very wet like all my other AR's.
Click to expand...

A proper diagnosis of the trouble is essential as your one problem is “just staying in the chamber”. This can be a symptom of over gassing so check the rim for extractor damage or half moon markings from the ejector. Question: are you communicating that when the case remains is the bolt with it and hasn’t movered rearward at all or is the case in the chamber with the bolt back and jambed on another case creating a double feed?
 
AMET said:
Rims are not ripped off. This is the biggest problem i have. the cases wedging themselves between the bolt face and edge of the receiver. i also get cases in the chamber and not ejecting both backwards and forward in the chamber, another one is i get the odd stovepipe (Both ways)

qGbAJLY.jpg
Click to expand...

Are those not extractor marks on your brass? The one on the left looks gouged up.
 
You must log in or register to reply here.
Back
Top Bottom