Splatt Wrote:My elander mags SUCK !
1 will chamber from a mag on the first round, the other nose dives the round into my feed ramp.
Just ordered 2 asc 10 round mags for 13.99 each.
Hope these work better.
So, I did have other issues.
1st off, accuracy was NOT, to be expected. The American Gunner ammo, would cycle, and lock back the bolt.
When purchased, the barrel had an adjustable gas block. Brand, unknown to me.
Switched to my reloads.
Switched to a single round mag, so all variables were the same.
Round goes off, bolt would eject brass, but not lock back.
Have never had, nor needed an adjustable gas block.
Loosened set screw, screwed adjustment screw out for more gas.
Gave up after taking screw out, and just enough in to hold.
Junk.
Accuracy SUCKED.
Pulled out a steel, non adjustable gas block when I got home, switched, and reshot the other day.
Wow! What a diff.
American gunner, 1st 2 rounds at 100 yards, 1/2" !
Went to squeeze trigger, nothing, jammed round ! Junk elander mag.
Drop mag, drop round into chamber, trip carrier, insert mag, fire. 11/4" high ! Ok... next round chambered. Fired. 3rd round groups back with first 2, 3/4" !
Next round, jammed.
I'm done !
Gas block definitely made a diff. in accuracy. Why ?
Haven't had time to load, working on other cartridges.
Will try reloads again, this week tho.

sbowhuntr Wrote:Just looking at your pic and I am curious as to why your forward assist is like flush with the upper receiver?? Is it broken and pushed in? Could be a problem there unless thats some new fandagled thing I am unaware of.

Lastrites Wrote:Likely a plug and not a fa or that would likely have issues.

lazyengineer Wrote:Thanks for posting this. I have a PSA 20" upper, that I got for $299. You're right, it's quite light. My upper has been quite reliable. Though I will say I don't recommend running w/out a FA on a Grendel. In my experience this cartridge has a LOT of drag when pushing the round out. I don't know why, but it's quite difficult to just manually strip out a round from a Grendel mag by hand. And when I load a full mag and do a manual bolt drop, every once in a while (Rare, but has happened to me twice now I think), it will hang, and I'll have to touch the FA to send the bolt the rest of the way. Upon firing this is a non issue, likely due the more jarring motion of a gun in recoil; but in any event, the 6.5 Grendel is the one upper I would suggest leaving the FA plunger on. I will say, my PSA Grendels have been quite reliable.

Accuracy of my PSA 20" is spotty. It loves 90 TNT's. It hates 123 gr anything. It does OK with 129's. For this reason, I recently bought a group-buy 20", heavier BBL. Nominally, I can't make my PSA BBL better than 2 MOA barrel, and it takes a lot of work to get there.

As to the gas block, that's very interesting to me. I recently picked up a Group Buy 20" BBL. In pulling my PSA upper apart, I just put the PSA 2-screw adjustable block on it, thinking that would be fine. I am curious about the gas block experience. Was that the only variable changed? Would you say both blocks attach the same way and have about the same amount of torque on them? I moved my PSA gas block to my new Group 20" BBL I just bought, and sure am hoping that wasn't a bad idea. Someone did comment that it looks like it's leaking a lot, which I didn't think much on...

A5BLASTER Wrote:You have mag issues are a slightly out of spec lower. None of my mags have that issue.

Only time I have ever had that issue was with elander grendel mags and when running handloads off the six8 pmags I was useing.

Asc,CPD mags in every grendel I have built have come out the mag just as easy as any 556 I have ever shot.

lazyengineer Wrote:Not really, it happens with all Grendel Mags. E-Lander 10, 17, 24 and ACS 26. Grendel shape just has a really high mag-lip drag, compared to 5.56. There's just a lot more force in how a mag holds a Grendel. Note nobody makes an aluminum Grendel mag, because it has to be steel to be strong enough for the force balance of dealing with Grendel in a mag.

A5BLASTER Wrote:No it doesnt. You do realize your the only one having this issue with all mags right?

No body makes a aluminium mag because their is no advantage to aluminium mags. Not with any cartridge that can shoot from the ar15.

lazyengineer Wrote:No I'm not, this is the 2nd time I've seen someone posting about this exact issue in the last 24 hours. Go put 20 rounds in an AR mag of 5.56, and put about that many in a Grendel mag, and tell me it takes the same force to push-feed a round out by hand. It's night and day. Both guns run the same buffer spring. So yes, it matters.

Splatt Wrote:New asc mags needed a feed lip bend, and then worked fine today.
My psa barrel does not like 100 gr ballistic tips with 29.0 or 30.0 grains of imr8208, at 2.250.
1 1/2" groups. Not even worth posting the pics.
BUT...........
Last I posted I said I was loading 125 gr Nosler Partitions over 28.0 grains of 8208.
How about this !
100 yards, Leupold 4-12.

Got my deer load !

A5BLASTER Wrote:Sorry to tell you but I haven't seen anyone post on this board in the last 24 hours that they are having a feeding issue due to a so called case design problem.

I can do you better I can put 26 rounds of each in steel body ar15 mags. And nope they come out as easly as the next.

No mag material used does not matter. Steel mag bodies are better in all ways compared to aluminium. Case in point does anybody make a aluminium mag except 556 mags? To my knowledge if you ask someone that runs 556 what mags they like best they are going to say polymer first, steel second and aluminum last. If they even would entertain useing a aluminium mag.

Thus same argument has been run for years and years by 6.8 guys and it was proven time and time again to be false.

So I will say again if your having feeding issues. It's because of your mags are your lower is out of spec some how.

I have run every 6.5 grendel mag on the market and the only mags that gave me trouble were elanders. And yea elanders in my book are garbage. Asc/arstoner are servicable, CPD is the best of the metal grendel mags.

Bottom line is your assumption is wrong and just that a assumption on what's causing your issue.

Provide me 5 links that have data that is less then 5 years old showing imperial data to prove otherwise that the grendel case design makes it harder for the bcg to strip a round.