98Z5V

I'll bet that was an awesome sight! Free food for that big guy!

I torqued my barrel down in the upper, and got a measurement of 10.400" from the center of the gas port to the center of the cam pin cutout. Every gas tube made is another 0.600" longer, from the center of the gas port in the gas tube, to the end of the gas tube. That gave me 11.000" on the money for the perfect gas tube. We'll see how perfect I got that, once the tube gets here.

So, I took the gas block back off tonight to check everything out. For those that have this barrel, I went with one of the smallest set-screw 0.750" gas blocks that I could find, and it's a KAK low profile block, purchased from Primary Arms. OAL on the block is 15/16" long. That worked for what I wanted, which was to keep both set screws on the 0.750" portion of that barrel - those with the barrel know what I'm talking about, due to the gas-piston-designed gas port location. I dimpled both set screw witness marks, for future. Once the White Oak gas tube comes in, it's a shooter. Gas port diameter in my barrel is 0.070". We'll see if that works, but my dwell time on this barrel is 3.500". For those that bought these SIG 716 barrels, and haven't built the guns yet - measure, measure, measure. The only place you'll be able to purchase a gas tube will be from White Oak. Once mine comes in, I'll confirm, but I triple-measured this thing with the barrel installed, then ordered a gas tube that's 11.000" long, AR-10 bend. Once it gets here, during the install, I'll get all the pics in here. I know when Jim was building his up, we talked in detail about gas tube length for this combination - and he ended up with an 11.000" gas tube measurement. I don't know why other people are reporting gas tube lengths that are different from that, other than just maybe, gas ports were drilled in all kinds of different locations on these barrels. Jim had one of the first, and I've got one of the last, out of that batch of 500 that CDNN had. Weird that we came up with the same number - but there are other numbers out there, too. All I can say is - measure, measure, measure.

This is typically not how you'd run your weapon, everyday. The Heavy Lube recommendations are for breaking in new .308AR rifles. Break it in, make sure everything is mated and fully functional, break it down, and clean it up. After that, normal lube practices apply. You wouldn't break in a new engine rebuild with just a little bit of assembly lube in critical places, and nothing in the oil pan. Run new .308ARs heavy with lube, until you're positive that the function as they're supposed to - if they don't function as they're supposed to, at least you know it's now from a lack of lube on all those new, unmated, huge parts.

Eagles are such a majestic, badass bird of prey. Amazing creatures.

Yeah, that was me screwing up the Creed build you have, and the common FGMM .308 ammo. With the 1:8" twist in your barrel, try the heaviest projectile that you can find, in quality loaded ammo. Black Hills might end up being the source. The 147gr Hornady ELD-M projectile has worked miracles in my .260 Rem, and would do well in your 6.5C gun. I'm playing around with Hornady 143gr ELD-X projectiles now, but will have some info up on them in the future. I've heard that the 130 Bergers are pretty good in the 6.5C. I'll tell you, that Berger 185gr Juggernaut projo in the new .308 Win FGMM ammo is a BADASS round!...

I'm doing one, on a WC barrel. That .243 Win was the tipping point. Why not build a 7mm-08 and a .358 Win, and have every cartridge that the .308 Win is the parent cartridge of... .308 Win, .338 Fed and .260 were already in the stable. 1/2 way there. The damn .243 did it. Can't stop with only two to go...

Weird, isn't it... I have two that are setup almost identical, even the same brake on both. 16" .308 Winchester, and 16" .338 Fed. I SWEAR that .338 is a softer shooting gun than the .308 Win gun.

Think about the ammo that you'll be using. Do you load your own/handload? If not, and you're going to use commercial ammo... some will be stout, some will be weak. That's when you need more gas port diameter, the weaker ones. Good job on bringing the port up, little at a time, and testing - that's really the best way, once you find that ammo that your gun likes. I have a badass handload for my .260 that's running the 147gr Hornady ELD-M projectile. Perfect function with my (then) 0.070" gas port diameter. Some of by other handloads wouldn't even cycle the action or move the BCG. By several load manual refences, those loads should have been pretty powerful loads, too. Nope. My moment of rational clarity, even though I'd been denying it for awhile, was when I shot some NEXUS ammo loaded with 139gr Lapua Scenar projectiles... Wouldn't cycle the gun. I punched it up to 0.080" that next weekend. Runs fine now, with anything that I throw at it. Wilson Combat even increased their gas port diameter from 0.070" (what mine was when I bought it) to the current offering of 0.080". This was long after I found out what I did, though.

It's a good barrel, from a great company,as far as barrels go. It's not bad. Every barrel likes a certain load more than others, though. Finding the ammo is just a search for what the barrel likes. That's why I load my own, honestly. Tune the load for that barrel, and it's on, after that. The the .260 Rem, I only have one, so it gets that handload. For .308, I find a load that works in the 18" Mk11 and the 20" Rem 700 - and I stick with that load. It would suck if the same load didn't work for both. I have some 5.56 guns like that. Certain load for these 3, but that other little bastard... gets it's own load. Luckily, for Grendel, the same load works for all of them, quite well. It's just trial and error, man - finding what your barrel likes. Tell you what - if that barrel doesn't like Federal Gold Medal Match, then it might have issues. Excellent ammunition. Try both 168gr FGMM and 175gr FGMM through it. At 100 yards, I doubt you could tell the difference between the two. At 600 yards, there would be a slight difference, with the 175s winning out. At 800 yards, there's a very real difference in the two, with the 175s smoking the 168s. Glad that thing is running - that's fantastic news! FWIW - Hornady American Gunner in the Grendel load - doesn't shoot for shiit through my Grendel family. It's not bad - but it's not what I'd call accurate, either.

You should definitely build a Grendel. Hands down, it's the most effective cartridge ever designed for the small-frame AR, bar none. Nothing else even comes close. Oh, and yes, I did build a .224 Valkyrie, to compare to the Grendel. The Valk doesn't hold a candle to the Grendel. No way.

The message won't be taken seriously, unless it has impact. That's the best way to learn a lesson.

I FOUND HIM, BROTHER! But, HE isn't... He's a SHE. And she has 3 little ones! Amazing discovery today! "He" was poking that head out of the hole when I was coming home from work, so I pulled over, down the street. Wanted to walk back and get a closer pic, but at about 20 feet away - spooked the owl- flew off, to the ground across the road, and settled in the dirt about 100 yards away. Since I was there, I checked out the hole in the ground. BONES EVERYWHERE! I didn't want to get too close, so I just zoomed in a little... FUK YEAH! Dove and Pigeon parts! Hold on, fuk is THAT? Little bird head in that hole?... Damn right - 3 little baby owls down in that hole! That was MOMMA Owl that I was looking at this whole time! I'll keep you updated, brother.

New ones need to be almost like this - dripping with lube...

First Ex-Wife from central Maine, parents owned a dairy farm. Country-as-fuk, for Maine, and all the brothers and sisters mixed in. 8 years of that, with visits, so I can interpret that pretty well, brother. That's the basis for my skills, with your Cunuck ass...

They're vicious about it - I condemn them.

For those that don't know - where that came from...

Welcome aboard, and thanks for posting an Intro. So many don't... Commendations to you for doing it. Start another thread in this section, and tell us what distances you want this thing to go, for longer ranges, what your goal is for the overall gun performance - stuff like that. It's easier to zero in on suggestions, when we know what YOUR expectations are of the gun. https://forum.308ar.com/forum/12-general-discussion/

Wasn't MY pronunciation, can say that. I can instruct, people practice it, get it, and then they go perform it. My Assistant Instructor, though - there's a reason I'm his DI - Designated Interpreter. Sometimes he even stumps me, though. Then, you add that Cunuck fucker into the mix - BOTH of them at the SAME TIME... and I've got my hands full... They make me drink.

DAMN!!! Look at that ejector spring!!!

WORK ADDRESS, brother. Work address. Don't ship it to the house - I don't want a Porch Pirate getting it. I'll set my game cams up this weekend, out front, just in case... Tell Zack I Love Him... ❤️❤️❤️

I've played that game here before, on these guys, and got it through on them, too - you've done quite well, and should be commended. I suspected that you were up to something, and tossed The Rule out there... So, are you the fisherman... or the fish...

Indeed - I have a full set of them, in quite the intricate extraction set, just for that purpose. Removing broken bolts and screws is an artform, to be practiced with the appropriate extraction tools. It takes practice.