98Z5V

Let's directly quote you, then, AL... "Show me the medical journal published double blinded peer reviewed study showing that" this "vaccine" is SAFE, and DOESN'T cause harm... I'm sure you have THAT in your hip=pocket, and can whip it out. readily. Show me yours, and I'll show you mine... It's NOT a vaccine, either... It didn't cure or stop a fucking thing. It is killing immune systems. RSV is back now, why?...

I need to look up the vital zone for a skunk...

No worries. Doesn't matter, as close as it is, and what a load does. Drop at close range is equal to the height-over-bore of your optic. It's that simple. It's proven. Most ARs with optics are 2.500" height-over-bore. Anything 25 yards and under is gonna land 2.5" low. You just know your holds, and adjust your aim. When you're looking at a 7" vital zone on alot of animals - many animals - that 2.5" low doesn't really matter. When you're looking at small critters, like you are - it can matter. Your height-over-bore is 3". Aim 3" lower, and crush them.

I hope he ate every single one of them, brother. All of them.

The evidence is already out there - the "shot" is fucking up immune systems. I hope you don't have issues, or side effects from it... but too many already have. That's not "wishful thinking." Al, that's already documented.

You'll see...

Here's the bottom line. Measure the INSIDE of the receiver extension. Measure along the TOP of it, as it would be installed. Shove a tape measure down that thing until it bottoms out, and measure the top surface of that extension, at the tape. Take a picture. Post that picture here. Show us the internal depth of your receiver extension. We move on from there. Lower receiver, "ears" all that - the extension should be flush with the lower receiver, when it's (#1) manufactured correctly, and (#2) installed correctly. Fuk all that, for now. Just measure your internal depth of your extension, for now. Don't worry about all that other shiit - for now. If you have an extension with an 8.000" internal depth - that's fixable, but it's fucked up. It wasn't manufactured correctly, by ANY standards that are out there. Get the internal depth of your extension in here, and don't get wrapped around the axle with all the other references. Numbers matter. Get the internal depth up here - we move on from there.

Not possible. You'll have side effects. Later. You just don't see any of them yet. But, you will...

I knew I was. It's external ballistics, and a little bit of math, and alot of trigger-pulling experience, with results of my own, over time. I'm glad it worked out. Not trying to be cocky, or be a dick, but I've done this, trained this, played this, for a very long time.

Here's a good writeup as well, from NRA American Rifleman. It goes into a little more detail (or different details): https://www.americanrifleman.org/content/rock-river-arms-lar-8-standard-operator/ snips from the article: Rock River Arms originally designed and patented the system back in 2005. At the time, both AR-10 and SR-25 magazines were scarce and expensive, so Rock River designed its own AR-10-style rifle around a more abundant and affordable magazine. For that purpose, it chose the 20-round box magazine used in the FN-FAL, which was readily available and priced as low as $5 each. The design was licensed to Bushmaster, and during the course of about three years, the company built and sold several thousand rifles. In the time since it reacquired the rights to the BAR-10/LAR-8, Rock River replaced the original charging handle with a more common design and refined the extractor for better performance. The LAR-8 will accept metric- or inch-pattern magazines as well as current-production Rock River magazines. Although it appears to be just an AR clone, few parts are interchangeable. The adjustable buttstock will interchange, as will the trigger and safety mechanisms, but that is about it. The dimensions of the barrel extension are different, and the bolt carrier and charging handle are both longer. My findings - The bolt carriers and charging handles are 1/4" longer than DPMS LR-308 and Armalite AR-10 patterns. The buffers are 1/4" shorter, to account for this, and still run in standard-depth extensions.

With a 50yd zero, and a 3" height over bore - you're gonna be right damn close to 3" low at 25 yards. There's not much drop out of the barrel at short distances, so your height-over-bore is basically how far low you'll be. Try it out.

Yep, that's the Bushmaster BAR-10. There are 3 main patterns for these rifle, that the newer manufacturers follow. DPMS LR-308 pattern, Armalite AR-10 pattern, and (not common at all for aftermarket) the Rock River Arms LAR-8 pattern. This Bushmaster BAR-10 pattern is what Rock River bought from Bushmaster, and got them (Rock River) started. After the design was sold to Rock River, Bushmaster started making all future guns on the DPMS LR-308 pattern. Note -don't try to buy any aftermarket charging handles for .308ARs for this - they'll all be too short. If you want parts, about the only main parts that will work will be coming from Rock River Arms.

Gas port needs to be 0.080"~0.085". Since you're running adjustable gas, just to to 0.085" and be done with it. It'll eat anything you throw at it. Rex nailed it already. Don't measure the OAL of the extension, measure the internal depth of the extension. The number you're looking for is 7 5/8" internal depth. If it's not that, state what it is in this thread. Buffer needs to be 3.250" long. That spring wouldn't be my first choice, I'd rather see an Armalite EA-1095 spring or a Sprinco Red spring in there. Rex also hit the nail on the ehad with the drill bits. Don't use fractional bits to drill out your barrel. Used numbered drill bits. You can pick up the one you need from Ace Hardware, the Irwin numbered bits. 0.085" is a 44 bit. https://littlemachineshop.com/reference/numberdrillsize.php Also, H3 buffers should weigh 5.4oz.

It passed! Sounds like the other ammo choices were working well, too. Well done on the gun.

That was MilSurp machine gun ammo. That shiit is meant for beltfed guns, and area targets - not point targets from semi-autos. It's good. This is why you don't try to use oldass MilSurp 7.62 ammo, and try to see how accurate your current, modern .308AR build is.

I'm laughing my ass off over here...

7/8 x 14tpi is the common die threading, and most presses have an insert in them that those dies thread into. If you remove that insert, the threading is 1 1/4 x 12tpi. Those sized dies are for larger shiit, like .50 BMG. There are a few presses for .50 BMG in that size threading, and dies - that's the most common for .50 BMG. There's another threading size for dies, and it's 1 1/2 x 12tpi. There are only 2 presses out there with 1 1/2 x 12 threading for the .50, and they're both hard as fuk to find in stock, from a company that you can get ahold of, and not pay a fortune for. RCBS used to make one, rumor is it's discontinued, Hornady is the other, and it's not easy to locate in stock, under a grand. So, there's the die-threading sizes for everything out there that we could commonly reload. 7/8 x 14tpi 1 1/4 x 12tpi 1 1/2 x 12tpi That's it. Custom shiit is custom shiit, and anybody could make anything - but that's what the reloading companies make, for threaded dies in their presses.

Yep! The weekend before a match, accidentally, I decided that I needed to hump something up into the hills, and put that 12" gong up there at 712 yards. Just how it worked out. Went up there, found a great spot, planted it. Lasered camp from up there, re-lasered it once I was down. The yardage was what it was. The very next weekend at the match, we had a 710-yard target... Firing up the Little ARC this Sunday, shooting with @JBMatt. My load is too fucking hot, and I know it, and it'll kill brass fast. The brass is new, so I'm not changing the load yet - I'll shoot this December match with it first, then get into taming it down a little. Details, load data, and speeds coming up after this Sunday...

Here's another 6 ARC success story, men. When info on this thig dropped on 3 June 2020, it wasn't supposed to - that was accidental. This was all a SOF-developed thing, and had been going on for a couple years prior - and the "public release" wasn't supposed to... Yeah, well. Fuk it... So, here's a good story on why this went where it went, and why. We knew SOF was behind it, but now that's been narrowed down, and it's SEALs behind it (not a shocker). They're still mad that it was 5th SFG(A) that came up with the Mk12 (the "original SPR") in the first place... Cool article, and WAY BADASS GUN!... https://www.recoilweb.com/water-dragon-grey-ghost-6arc-drac-174693.html

Next couple of weeks, George, I'll have alot of data for you. At the last match, I shot my 16" precision gun again, and it did very well for me. After that match, we always hit the local place right outside the range, and rip up some burgers and bloody marys. we decided a couple days ago that we're shooting SBRs for the next match, just to make it more interesting, and see what happens at distance... So, December match, 12.5" ARC is going out there, and battling the ranges/distance that we have. Longest we've had in a match is 710 yards, since I've been shooting it for the last 1.5 years-ish, and last month we shot 660 yards. We'll see what "Pint-Sized Precision" can do... Next weekend, I'm working on speeds on the chrono, to get my dope chart straight for that next match. Details inbound...

No offense intended, but these aren't houses, cars (unless you're building high performance engines and into tuning the volumetric efficiency of each cylinder, as in modern computer-software tuning nowadays, hacking ECMs in cars to make them "better"). <<< Yes, I do this. This isn't setting up pinion bearing preload or backlash on a ring gear, building a differential. These things are like comparing those skills - to comparing apples and hammers. Guns aren't the same, and gas-guns are vastly different than any other guns. Sprinco states it best. They make the broadest range if the highest quality recoil springs of anyone else in the gun industry. Here's how they break it down, right on their website: WHAT SPRING DO I NEED TO ORDER? READ THIS BEFORE CALLING Unless you already know which spring you need for your rifle, please refer to the following resources before calling for a recommendation. If you call prior to knowing the answer to the specific current performance of your rifle, you will be referred back to this request to provide results. If you haven't built or shot it yet, neither one of us can predict the outcome. Bottom line is this - if you've only hand-cycled rounds into a chamber at this point - then we can't help diagnose anything with the gun. There are no "performance metrics" that can be applied here. We have no idea what your gun is gonna do when you fire it, until you fire it. I've outlined some things that concern me with the build, so address those - answer the questions I asked, and I can give you an idea of what's gonna happen... Until then, though... Hand-cycling rounds isn't gonna give you a single clue about how that rifle will perform, when you pull the trigger on a live round... That's my $0.02 on it.

MAN! I've been waiting to see what this turned into! Is this the .243 Win gun? Well done...

Exactly - toss a random question into a specific section, and hope for the best. Let's get this moved somewhere appropriate, that's not this "Firearms Industry News" section.

1st round is always from the right side of the mag, so 2nd round would be from the left side of the mag. This tells me that it's not the face of your ejector. Square-faced ejectors have issues with rounds from the right side of the magazine. Not the left side of the magazine. Based on the mags you're using, I know how the stack is in those mags. My bottom line, jumping ahead - is don't worry how a brand new build hand-cycles rounds. Shoot the gun. Worry about how the gun SHOOTS, not hand-cycles rounds. But, that's jumping ahead. Nice - built with a built-in 7 5/8" internal depth receiver extension in the stock, so it can run AR15s with VLTOR A5 recoil systems, and .308ARs with proper, Armalite AR-10 Carbine Recoil Systems. ...and this is a recoil system in a package, that's (#1) too light of a buffer, at 3.8oz (H1 buffer), and (#2) designed to run in a 7.000" internal depth extension (AR15 carbine extension). So, how did you set the UBR 2 up? You insert that spacer that's inclided with it, then the spring, and then buffer? This is very important information, that you need to provide here... Need specific details on this barrel configuration. 18". Got it. 0.750" gas block journal diameter (got that from your gas block information). What's the gas system close to? Below, you state it's a proprietary gas tube from Spike's. How long is that gas tube? Is this something longer than midlength? Something shorter or longer than rifle length? How long is that gas tube? The important parts here are two or three things - besides the trigger hasn't been pulled on a live round yet. Recoil system - the buffer is going to be too light, the spring is questionable. Not good parts, for a .308AR, even though it came straight from Aero. The gas port diameter is imperative, as well as the gas system length. I can figure everything out, with those details. If you set this gun up with that UBR 2, and those recoil system parts, and you didn't include that 5/8" spacer in the bottom, you'll damage the ears on your lower receiver if you shoot this gun in that configuration... Your BCG will smash the shiit out of your lower, first time a live round touches off...