98Z5V

Training Mantra at that point would only go one way - Put this on, do what I tell you to get OUT - Because I'm leaving. I'll see ya later. After you get out - at that point - Hey, it's all yours... Prior Training prevents pis.... Something... I'm gonna get you on a sky-dive one of these days when you're out here.

You are way good, brother...

Let's get that 6.5 CM unfucked. Start a thread on the details of that one, and we'll solve it. And make it run.

Amen, brother... Everyone else - hit that little triangle thing that says "expand" - and you'll see that this was called on Oct 5th, for all the Waterboarding Details that are required to diagnose an issue with a gas gun over the internet. Again, @pnutty, you are good, brother - you are way good. This is for future readers, partakers of our adventures...

@pnutty, let me put this revelation into common-man words. The 0.875" journal revelation, over my assumed 0.750" journal standard. You bought an old truck with a Small Block Chevy in it. Everybody that thinks that, when they see it, is that it's a 350 SBC. So, off we go. You're trying to tune the stock carb for this 350, based on everything you're read on the internet, and the whole internet is trying to help you tune your 350 SBC. Nothing is working, it's just not matching up, all the numbers are right for the 350 SBC, and it's just off, not running right. Then... when the numbers come out, we find out the guy DID sell you a real SBC engine in that truck - but it's a 383 Stroker... And our Carb Math just won't work on that one... That's exactly what happened here... Took a minute, but it's all figured out... This is exactly why we came up with our Waterboarding Thread - just for things like this. Nothing against you, it's all figured out now, just needs to be proofed out. Here's my shameless plug for our Waterboarding Thread, for those that read this in the future, and have questions... I'm just gonna bring up what Albro stated on October 5th...

That is exactly what I call "Complicating shiit with complicated shiit." You never Complicate Shiit With Complicated Shiit... It just adds to your frustration. That's Race Gun Shiit, right there, meant for the Race Gunners, and their fun little games.

This is good news, man - keep me updated!

Well, that's gonna come down to maintenance, really. With fixed gas blocks, just regular normal shiit, you don't really "maintain" them. They work, with little to no maintenance, ever. The mindset has never been, "Man, when's the last time I deep-cleaned my suppressor and adjustable gas block?!!?..." It's not something that people think about, and honestly not something I thought about, for adjustable gas blocks, until I saw a DD adjustable gas block fail at the last match last month - it cost that guy, possibly, the entire match. No adjustment mattered, until after the match, testing it, we switched it to the "unsuppressed" setting - then the gun ran (with the suppressor on), and it ran a little harder than it normally did - more felt recoil. That was the first failure of an adjustable gas block that I've ever seen, in person. And it was a high quality one. Carbon-locked. So, keep in mind, internal moving parts with small orifices, that have combustion gas running through them, will eventually need to be cleaned. How often? I don't think anybody knows. Yet. What I would do if I was competing with it - upper receiver muzzle-down, I'd block my barrel crown, seal it, shoot carb cleaner down the gas tube opening in the upper until it filled up, then adjust that adjusting screw several turns clock and counter-clock, several times. Unseal the crown, let all that shiit out, and shoot carb cleaner in the gas tube again and flush out any remnants of junk. Guarantee you I'd never seize an adjustable gas block. The only reason I have that advice is because of what I saw last match, with a good, quality part, and a great police sniper instructor running it. Never thought about it before... Not to the depth of what I had to think about trying to figure out what his gun did, and why. I talked to him last eek, told him what I thought, and he agreed. He'd never touched that gas block after setting it initially. Now, recommendation for an adjustable. I use the Faxon adjustable. I think it's mechanically perfect in it's design, and it never will have carbon buildup in any port or set screw. It's the perfect design. However, right now, they only make it in 0.750". What I see most people use is the SA Adjustable, as one of the best brands out there. You'll just have to add it to the list of routine maintenance, knowing what's known now... Keep in mind, this is something that most shooters will never face - they simply just don't shoot enough, literally. #1 pile of dudes that would find this out is military in combat arms units, that have a heavy firing schedule. #2 pile of dudes that are gonna find this out are competitors, that are out there every month, or multiple times a month, shooting anywhere from 100~250 rounds a match. Not many other people really shoot that much, when you think about it. Next weekend, I have a 10-stage match with a cap of 20 rounds per stage - I can potentially shoot 200 rounds, so I'm taking a spare mag or two of 20. I'm taking 240. I'm completely screwed if I need that many, and something else is WAY SIDEWAYS for me, if I actually need that many. But, they have to go... in 3 weeks, I'm shooting 2 matches in 2 days, 10 stages each. 20-round cap per stage. Well, there's 400 potential rounds, and I'll take 460 with me. The week after that one is my Fall Shoot, and I'll bet I shoot 1k rounds over those 4 days. Hopefully not, but it's happened before, just not all from the same gun. Weekend following that, I'm in another 120-round match... This is how we find problems, diagnose them, and figure out how to not let them be problems again, when you're on the clock.

That port has a diameter, and a length. Therefore, it has a volume. 0.625" gas block would have a thinner wall thickess, given the same caliber, right? In that, it would have a shorter length. A 0.936" gas block would have a greater wall thickess, and a longer length. That volume needs to stay relatively the same, in order to have the same flow and pressure - because we're working with several fixed gas system lengths. Would a heavier buffer fix it? No, but it would mask the symptoms. The results might look the same, feel the same initially - but the results do different things. Gas system and Recoil system need to be balanced, in order to run correctly, smoothly, and have a fully functioning gas gun. If you went the direction of a heavier buffer - heavier than H3 here - you would mask the symptoms of an over-gassed setup, but you wouldn't necessarily be fixing the over-gassed setup. The heavier buffer would just be "putting the bandaid on the wrong cut..." Here's a good, long read on all this stuff - this was all written years ago, after years of experimentation, across different calibers, barrel lengths, gas system lengths, and recoil system components:

There it is. That's it. The gas port is too big, for that journal diameter. An 0.080" port diameter would be just fine for a 0.750" gas block journal, but it's too much for the 0.875" journal, and the hole isn't gonna shrink. You need an adjustable gas block, and choke that thing down a little. Not much, but it needs less gas.

That's what I had to come to on both my .260 Rem guns. 20" rifle gas barrels with 0.750" journals,both ported to 0.080" That's good. That ammo isn't hot. Something else is going on. I have 2650 fps with Hornady 147 ELD-M handloads going through both .260s, and there are no pressure signs.

Good info! So, you won't get any info from Matrix Aerospace about these now, because they changed their own design. However,Matrix made all those uppers and lowers for Ruger, from 2013 to 2018. With that said, you can follow what other Matrix owners had to do to complete their receiver sets and get them running. Here's my .338 Federal Matrix gun:

Another batch of several good points...

This vid is cool AF,but it's even more Cool As Fuk because the end is in Glamis. End/ FWIW, the beginning of this vid started at Dillon Aero, on their range. No other way around that - only place you can shoot those things, if you're not mil, on your own range. LEOs don't own them, never will. Big $$$ for this vid, just because of the M134s. Commendable. Those of you in the know - Dillon's range is just a ridgeline away from the SDTF. The range manager's wife just loves @Rsquared, too. Anyone can use that leverage, anytime they want. Work what ya can...

So, I finally have a proper Scout Rifle. The Ruger Gunsite Scout Rifle came out in 2011, and I have a first-year model. It's the M77 Hawkeye receiver base, if you know anything about the M77 generations - it's the last improvement they made to the M77 line. CHF barrel,10" twist, .308 Win, mag fed,forward rail - proper Scout gun. Gorgeous laminated stock. Well, this year, 2026, Hi-Lux Optics finally decided to make a modern Scout scope. Some of the stuff from the past was good, fit the methodology, but was off somehow. Burris had a great one, but it was fixed 2.75x power. Vortex made one, it never really took off. And so on... The Hi-Lux is a LER 2~7 power scope, 9~13" of eye relief, 12 ounces, and has a fiber optic battery powered center dot. I got the green dot, over the red dot. Put it in some too-expensive Leupold rings of the proper height, and it's perfect. It runs a 200-yard zero in a BDC reticle, and has drops for 2, 3, 4, 5, 600 yards, calibrated for .308 Winchester. It's the perfect do-anything gun, while not being the most badass gun at anything particular. The optical clarity of the glass is incredibly impressive. It's got capped turrets - set it and forget it with the BDC - but under the caps, the turrets are very well marked, adjustable in true 1/4 MOA clicks (and not 1/4" clicks), and each click is very crisp and positive. You know when you move it. Overall, this is one badass Scout scope, and the absolute best thing on the market, if you're building a true Scout Rifle. Here's the scope details, on the HiLux website: https://hi-luxoptics.com/products/long-eye-relief-2-7x32-mk2-rifle-scope?variant=53001932177621 MSRP is $299, but they offer you a 5% code, and it's $286 shipped to your door - they don't charge tax, and shipping is free. If this scope would have come out years ago, I'da bought it. It just came out this year, and I've never really been turned on by Scout scope offerings in the past. I'm extremely glad I bought this thing. My 15-year-old Scout Rifle is brand new again... Here's the new gun, to me, now:

Nice work, brother!!! Tom Grieve is amazing, with his explanations. He lays this all out very, very well.

All eyes are off Suppressors,SBRs, SBSs, and AOWs now. The game has changed. Putting stocks on my ShockWaves right now.

Yep. Ron's Form 20 doesn't have to be filed anymore, if he puts braces on them to travel, then reverts to stocks when he arrives. And Vice Versa for the rip back home. We'll see how well they stick to "once a pistol, always a pistol - that can go to rifle. But if it started as a rifle - it can't go pistol." Prove it/. Long, hard battle for them, right there. It'll never get prosecuted, my guess, in that circumstance...

You get 96 hours,on a standard mission. That's initial planning, backbrief, back into planning when they shoot down your ideas... Finalize the plan, and execute. Go time. When it's SHTF, you get 18 hours. I landed in Bagram, was given 18 hours, and was wheels-up on an MH-47. That was fun. That's the life, though.

I just refreshed, saw this post from you Rex - and I'm so glad it's not a picture of a straw in something. You know, sno-cone, whatever... THE whatever...

@pnutty, check this topic out, man.

Been preaching this for more than a minute, and it usually comes up in other topics, someone talking about why their gun doesn't work. This vid encompasses everything I've preached, for years, all in one place, one vid. Worth your time. Promise. Gas Gun life ain't always easy.

I never knew this, have never heard it. Operation Gothic Serpent, Mogadishu, Somalia - the 3 October 1993 raid that went to shiit fast, because the Skinny's were shooting RPGs at MH-60 tail rotors. There were TWO that went down in the city - but there were FIVE that were wrecked, total, by RPGs. This is wild. I almost made a separate post about this last week, on 3 Oct, but I didn't. It was on my mind, I was at a match, and I brought it up there at the match. I never said anything here, though, by starting a thread on it. Mentioned briefly, in another thread. 33 years since that happened. I'm gettin' FUKKIN OLD!

That was just one described, brother. There was an absolute shitpile of them...