New Stag-10 feeding issue

wayupnorth

wayupnorth

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so i was finally able to get out with my new STAG-10 and give it a function test.
i have run into a issue.

im pretty sure its a magazine issue coupled with a a new bolt needing to wear in a bit.
but let me know what you guys think.

so my STAG came with a magpul magazine.
i loaded up 5 rounds and released the bolt, the magazine let the round go at a shard angle and it binded up.
i took out the mag and fixed the issue then reloaded.
bullet came out at too sharp of a angle again.
so i removed the magazine, reset everything and tried again.
this time i used the charging handle to slowly release the bolt so i could help the bullet go in properly.
everything looked good, hit the trigger, click.
looked at the bolt, it looked like it was back about 1/2" from being fully seated.
i hit the forward assist - nothing, i brought the bolt back 1/2 way and let it slam home, still wasn't fully forward, did 1/2 back and release twice more and it went into battery finally.
fired rifle, went bang this time.
decided the magazine was the issue and fiddled around with it again and again the bolt didnt fully go into battery.
this time the forward assist put it into battery, it went bang.
3rd round, fiddled with the mag again, round finally went in, this time it was in battery and fired fine.
last round, fiddled with the magazine once more, round finally went in and once more the bolt was not fully into battery.
pulled back half way and released, went into battery, fired fine.

so, it was cold out and i decided it was pretty obvious that the magazine was not working and causing the majority of my issues.

what im thinking is when the round clears the feed lips the front end of the round jumps up too high and gets hung up above the barrel / lugs.

2nd the not going into battery fully, im thinking once again that the magazine is interfering with the bolt going fully forward - or - new gun needs to smooth itself out?

anyone have any suggestions to add?
im gonna look and see if i can find a metal magazine and order one up and see if that will resolve the feeding issue.
 
Clean it well...oil it...throw on a movie or two and work the charging handle and bolt lots.

My rifle wasn't the biggest fan of the (pinned to 5) 10 round Mapgul mag at first. I Strictly run Lancer L7s now.

Once the above is done...load 4 rounds, not 5 (pinning job might have been bad) and let the bolt SLAM home.
 
sorry, i should have mentioned it in my first post.
i fully disassembled the rifle when i got it, everything right down, cleaned it all off, gave it a good coat of G96 and even let it merinate for a while.
i was also looking for any blemishes and burs and such, was all good.
so all that was already taken care of prior to the first shoot.

a co-worker of mine has a Modern Hunter and he is running metal mags and is gonna bring me one today or tomorrow for me to test out in my rifle, see if it is as simple as that to fix.
and i agree with sitting back tonight and running the bolt a couple hundred times to smooth out anything.

i shall report back!
 
Like others have mentioned clean the rifle thoroughly. I find the stag and my friends stag don't like 7.62x51 they both had jamming issues running Lake City military brass. No issues whatsoever with many brands of 308 Win. We use Magpul plastic mags and XCR-M pistol mags with no issue. My gun in particular had jamming issues originally because the gas hole was canted. After cleaning my rifle fully before shooting it I realigned the gas port perfectly in line with the barrel/gas tube which resulted in jamming because it was only getting about half the gas. After I realized what was going on I dimpled the barrel and realigned the gas port which is a few degrees out of line, but I haven't had problems since. I only shoot 308 out of it now and it's been 100% reliable.
 
SavageTRB said:
Like others have mentioned clean the rifle thoroughly. I find the stag and my friends stag don't like 7.62x51 they both had jamming issues running Lake City military brass. No issues whatsoever with many brands of 308 Win. We use Magpul plastic mags and XCR-M pistol mags with no issue. My gun in particular had jamming issues originally because the gas hole was canted. After cleaning my rifle fully before shooting it I realigned the gas port perfectly in line with the barrel/gas tube which resulted in jamming because it was only getting about half the gas. After I realized what was going on I dimpled the barrel and realigned the gas port which is a few degrees out of line, but I haven't had problems since. I only shoot 308 out of it now and it's been 100% reliable.
Click to expand...

After a few 100 rounds and a few cleaning sessions...it should run 7.62x51...mine has from day 1, even the cheapie stuff.
 
ok, so i slipped out to the range again today - MUCH HAPPIER!

like i said i had already fully cleaned the rifle before i went out the first time.
but this time i had a metal mag in hand from a co-worker.
i also spent some time last night working the action, was surprised to see that after only 20 times working the action the charging handle has a fairly big spot on it that ALL the anodizing is rubbed off to bare aluminum already.
im thinking that was rubbing, obviously now i guess.

so i oiled the charging handle and bolt and went out again today with the metal mag.
first round, same as before, it had a really tuff time feeding the round and the bolt was back about a inch - not fully into battery.
i popped the mag out and pulled the charging handle back about half way, let it go, did that 3 times and then hit the forward assist and it seated finally.
put the mag back in and it rank 5 round flawlessly!

so i took out the original plastic mag and put 5 rounds in it.
same as the metal on is had the exact same issue with the first round then once the bolt was in battery it ran the entire mag flawlessly.

so thats a good improvement!
so now its just the first round feeding that seems to be the issue.
im guessing that running the bolt and handle several times and clearing high friction areas plus re-oiling solved most of the issues.

im gonna guess that working the bolt some more and rattling off maybe 100 rounds should fix everything.

one thing i have noticed that i find odd, not sure if my AR's do this as ive never noticed it.
but if i put a empty mag in and pull the charging handle back the bold will lock back.
if i eject the mag out the bolt will slam forward.
so obviously the last round hold open is catching like should.
but why is the bolt releasing when the mag is popped out?
shouldn't the bolt catch be engaged and stay on?

anyone see any good deals on cheap 308?
 
wayupnorth said:
ok, so i slipped out to the range again today - MUCH HAPPIER!

like i said i had already fully cleaned the rifle before i went out the first time.
but this time i had a metal mag in hand from a co-worker.
i also spent some time last night working the action, was surprised to see that after only 20 times working the action the charging handle has a fairly big spot on it that ALL the anodizing is rubbed off to bare aluminum already.
im thinking that was rubbing, obviously now i guess.

so i oiled the charging handle and bolt and went out again today with the metal mag.
first round, same as before, it had a really tuff time feeding the round and the bolt was back about a inch - not fully into battery.
i popped the mag out and pulled the charging handle back about half way, let it go, did that 3 times and then hit the forward assist and it seated finally.
put the mag back in and it rank 5 round flawlessly!

so i took out the original plastic mag and put 5 rounds in it.
same as the metal on is had the exact same issue with the first round then once the bolt was in battery it ran the entire mag flawlessly.

so thats a good improvement!
so now its just the first round feeding that seems to be the issue.
im guessing that running the bolt and handle several times and clearing high friction areas plus re-oiling solved most of the issues.

im gonna guess that working the bolt some more and rattling off maybe 100 rounds should fix everything.

one thing i have noticed that i find odd, not sure if my AR's do this as ive never noticed it.
but if i put a empty mag in and pull the charging handle back the bold will lock back.
if i eject the mag out the bolt will slam forward.
so obviously the last round hold open is catching like should.
but why is the bolt releasing when the mag is popped out?
shouldn't the bolt catch be engaged and stay on?

anyone see any good deals on cheap 308?
Click to expand...

How tight is it to put the 5th round in the mags? I'm thinking it's too tightly pinned, but good deal it runs well, I'd love to see it all in person to take a look lol, I build my stag from parts and no issues, gotta clean it again mind you haha
 
Sounds like what I said in my earlier post a few days ago...your mags are pinned too tight!!! Probably RIGHT at 5 rounds vs 5.5 rounds...I can do 5 full rounds in my Lancer L7s but I can't load it on a closed bolt to do a 5+1
 
no, the mags are plenty roomy.
the metal one is a 10 rounder that i only put 5 in and the magpul that came with it is a 10 rounder pinned to 5.9 rounds.
they actually did a super good job of pinning it, can easily almost get a 6th round in there.
it is definitely not a tight mag issue.
 
for giggles i took out a couple of my AR's and put a empty mag in them and charged them.
they locked back.
i ejected the mag, bolt stayed back.

so the Stag is being strange or at least the bolt catch is.

also i was facetiming with my dad and i was talking about the issue with him and i was showing him and i noticed that the bolt would drop if i bumped the rifle when the bolt was locked back.
so its very very UBER light to knock it off the bolt catch.

im sure this has nothing to do with my issue but interesting non the less.

i think ill go out again tomorrow and for the first round i think what ill do it have the bolt locked back and put in the full mag then hit the bolt release and let that sucker slam home.

if that works then ill now the rifle likes to be treated ruff.
it should meet a girl i use to date....
 
Mine will misfeed on manual charging if i don't let it close full force also Bolt needs to slam closed, just like it does when it's fired. That's how it's supposed to be.

I have 150 rds through it only, but not one failure to feed or eject when shooting.
 
I'd change the bolt catch, I know it's not related to the issue but it seems like it is a issue waiting to happen, but the mag bit I'm thinking again.
By any chance is your mag not latching high enough?
 
Take some sandpaper and put it on a flat surface and sand the feedlips down a little. I had an mft mag that would cause the bcg to slow down to much and cause failure to feeds on my ms. Little sanding and problem went away.
 
im thinking of replacing the bolt release anyways with a Phase 5 since i would like the ambi (being a left handed rifle) so ill have a more detailed look at the bolt release then.
 
In all seriousness though, yes, it does sound like a mag issue. Not sure how well lubed you have it, but under-lubrication could be an issue too. Maybe cycling the action by hand several times will help work the action in.
 
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