That is your problem. Run some 5.56 ammo like I said and your problem is very likely to go away. Because it ran in one gun doesn't mean that it will run with the gas system on another rifle.
Also FWIW Tula is shit ammo. ;)
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ok ill report back when I can buy decent ammo lol sold out everywhere
Especially with a brand new gun. Once it is broken in well it will probably cycle tula ok. I put a brand new BCM 14.5 on a SOG lower a few years ago. At first it wouldnt shoot the steel stuff but 5K rounds of brass 193 later it will cycle anything I put it in, Good ammo and lots of oil.
apparently this bears repeating:
NEVER consider a gun related problem based on a guns performance with ONE mag or ONE type of ammo.
the major problems with AR's not working fall into the following categories:
1) inadequate or improper lubrication
2) bad mags
3) incompatible ammo
those accout for probably 95+% of ar function issues. they need to be eliminated first before thinking it is the gun.
as far as number 3, some guns will run with russian ammo some won't. (I have even seen this with identical makes and models -one guys model x brand y functions fine with ammo "A" but another shooters identical model rifle will not.)
when a rifle doesn't function properly, the first steps to take should be:
1) lubricate adequately
2) bring several types of ammo and several magazines with you to shoot.
identify if a particular ammo or mag is causing problems.
if so eliminate from inventory.
it has been said many times with target grade 22's and the same thing applies to ar's- with a new gun (or new-to -you) go to the range with a variety of ammo and find out what the gun likes best,buying a couple sample boxes of each type- once you figure out which ammo shoots best, go back and buy a bunch (or for the economy minded reload with the same formula)
tried some american eagle brass case ammo and no issues so it was just the ammo, thank you guys!
I know it's a little late, but I've had the same issues with a BCM mid-length upper. It shoots PMC and federal fine, but short strokes on Wolf and Herters (cabelas brand steel ammo).
I've come to the same conclusion; that these ammo brands are crap and underpowered. Don't know about Brown Bear or Silver Bear though.
Perhaps we should make this some sort of sticky because I predict a flood of newb-ish AR owners in the very near future with problems like these.
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