washguy

Always Brother ! JT here's the super secret gas port diameter thread from here a while back Wash http://forum.308ar.com/topic/8090-i-have-a-new-ar10t-that-is-short-cycling-and/?page=2

almost there go bigger keep it lubed......what ammo? one cartridge at a time for lock back function ...be sure your gas block is lined up good Wash

but wait...in a post here it was a typo someone said....it was a 100 yds lol Wash here it is from dnp DNP2500 Specialist 3,237 postsLocationSan Diego Posted 6 July · Report post Whoops. Decimal error. That's 100.0 yards.

Im still thinkin undergassed.....what is the present port size..nevermind i see it above ....go bigger a lil Wash

So Torin.......which category do you fall into? Wash

Here's some more super secret gas port sizing data for ya Phones sales guy at x caliber geeez hope all this doesnt get out to the public Wash copy and paste A Krieger 20" RLGS I just worked on with .936" journal had .0935" port, like an AR15. I sealed the gas block and tube, and it was gassed very hard. A Krieger 6.5 Creedmoor has a .086" port, RLGS and .936" journal. Bartlein uses .086" for 6.5 CM and .260 Rem as well. the BHW .308 based barrels are in the .085" (DPMS Pattern) gas port diameter for rifle length gas systems...keep in mind that will very with the diameter of the barrel at the journal/gas seat (I.E., the heavy bull barrels with say a .936" dia. gas port seat will need a larger dia. gas port). Also, keep in mind that the ratio of gas volume to port dia. is heavily biased (what this means is a small Increase in gas port dia. yields a large gain in gas volume/port pressure...)

"If you know what you are doing and have the right tools the testing can be done in a day. You have an issue with us and I was informing you of how your assumptions were incorrect and how we do test every gas system for functionality with a variety of ammo on both buffer systems at all lengths because all lengths are different. And we will happily answer any question that we can but most companies ask for a Non Disclosure Agreement before they give out gas port information because that is expensive info to attain. " Bull crap ..........Then why havnt you reproduced JT's problem with that same barrel today? Wash

http://riflebarrels.com/wp-content/uploads/M4_navy.pdf http://riflebarrels.com/wp-content/uploads/ar10_740.pdf X-caliber sez " ridiculous. . And for everyone wanting to know gas port sizes, those are and industry secrets that are very valuable. Why are you asking for them, because no body gives them out. If they did the info would be all over for everyone to find but it is not because it is very valuable info." I say you are full of crap ....first place I pulled up has the full diagram of their barrels...everyone of them...with gas port sizing......I venture to say that Liji which is not all that ,has sold more barrels made more barrels than you all have sold on.... wait for it..... Ebay What you should do is just answer the phone for the sales dept....and not get involved in technical $hit of which you no nothing about Wash 232 sold on Fleabay...... yep...thats where I buy all my fine barrels from http://www.ebay.com/sch/x-caliber/m.html?item=281795697374&hash=item419c551ade&rt=nc&_trksid=p2047675.l2562

Welcome aboard Breck! Wash

Torin I gotta question for you.....why do you want to spend that kind of money on a 80% lower/upper when you can get a fully machined matched set for the same price or 50 bills more? Almost forgot...the jig is another 100 plus....so now you are way above a fine 100% matched upper/lower.... since you havnt assembled an ar308, and havnt a clue as to what it takes to put one together from a 100% set....why would you want to interject even more variables? Wash

got my 300 in today...melonite treated...very nice finish Wash

My 300 blackout which they paid me to take will be here tomorrow,but its still in San Diego tonite...so sez tracking...how can it get here that fast?....lol....all parts waiting Wash Damn...arrived Dallas just now.....be bustin caps in the alley tomorrow

I use vagisil on my barrel nut...makes the nut go on easy, but stay real tight.. and has a protective barrier against moisture..hard to explain..... Wash

JT knows what it takes to have the proper buffer system...sheesh.....Like I said before...bet there's not an ar308 within a 100 yds of this shop...if there is...why dont they slap a barrel on with their gas port like they sent JT and see how that works out for em? JT ...they gonna pay for shipping both ways on your stuff? if not...thats a lot of ammo money..... its just plain under gassed with that port size.... drill it out..aint no big deal ...I dont want anyone doing R%D with my rifle...whatcha gonna feel like when it comes back marred up from shipping or sumthin....heck they couldnt even get a bare barrel to you without it getting messed up Wash

Welcome aboard Charlie ! one thing I must correct ...you cant call your ar 308 an ar10 unless....oh crap you're one of those.... Wash

"I would be happy to get that back from you to check it. We do test our barrels before we do gas port sizes and make sure it works with carbine and rifle buffer systems and we do not give out the gas port sizes as those are valuable industry secrets so when people ask we do not answer the question of gas port size." "-It could be the barrel but I might be able to diagnose it better with all your stuff in it." I'm torn now, send it in or drill it out myself??????? I had to order a set of bits as nobody had them here in town. Thats some pure crapola right there lol You can doo it JT drill it brother... go big or go home Wash

Heck yeah JT.....dont forget the dowel rod in the barrel...its a piece o' cake ! If X caliber knew their stuff they would have slapped a barrel on a rig and drilled till they found the sweet spot today already....I bet you and me got more rifles than they do... ... on second thought....they are prolly waiting on their shipment of barrels from China Wash

I believe the test " I contacted a professor at the University of Arizona – a very nice man with a Ph.D. in organic chemistry – and he agreed to help with an infrared spectroscopy test of FireClean and two types of Crisco". That gizmo doesnt lie Thanks Robo...now all my rifles and handguns smell like fries when I fire em good thing is.....fireclean and vinegar make a great salad dressing...although kinda expensive Wash

JT good plan! .083 with rifle length would be your problemo if its not fitting.......077 in a middy prolly wouldnt work very good...go bigger ive had a .082 not cycle a middy 16" before when it was newish....so you are undergassed with the rifle length Wash

JT the way I measure my gas ports is with numbered drill bits or pin set.... but drill bits are #44 is .0860 a #45 is.0820 #46 is.0810 all mine are middy gas lengths and I have mine at #44 which is .0860 and they work fine.... found a rifle length gas Lilja barrel pdf and the port was .093 .hope this helps very easy to drill...get a wood dowel rod and slide into barrel...so ya dont hit the other wall..... .0935 is a #42 Wash

I was at gal's home....she was having ac problems and we were waiting on a tech....we had just walked into the living room seeing the second plane hitting the building...ac tech knocked on door came in and he and us just sat there on the couch cant believing what we were seeing...sad sad day Wash

Exactly never forget! Wash

I had a few moments...so I cleaned my work area up before the pic.....is that cheating? all important stuff is in that black case with the ductape label....thats the voodoo stuff that gives me the .00012 sub atomic moa groups Wash

JT first class stuff! Wash

JT Yeppers you are very astute " I see this contest going a little different direction now....." post em up boyz Wash