What a diff, a barrel makes

[FLshooter]

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.

When I purchased my 1st Grendel upper,I was told by fellow shooters to stay away from E Lander mags.So, I started with and only ever owned ASC mags. Never had a problem with them they?ve all worked flawlessly.ASC mags work well in my RAP and both of my AR grendel builds.
As for as adjustable gas blocks. One came with my PSA 18 inch 308 upper.I had FTEs and accuracy problems. I was told to swap out gas block with a standard one.Now it shoots more accurately and no FTEs. So,adjustable gas blocks is another thing I stay away from.
I am still not 100% happy with my PSA barrel. I am waiting on a 24 inch custom heavy barrel from Precision Firearms. I think PSA uses quality parts in their uppers. I like the receivers and hand guards. I always end up swapping out the PSA barrel with a quality barrel.
But,I am looking for accuracy and tight groups at 600 yards.A PSA barrel will probably be accurate enough for hunting. Purpose and preference is what it comes down to. Don?t forget trial and error. Things that work for some folks may not work for you and vice versa.
But now days ,before I consider purchasing a firearm,accessory,or reloading component that I am not familiar with, I run it past the guys on the forum. Sometimes I get mixed advice. But after a while you know who you can listen to.