98Z5V

Damn, I've been so busy with work and reloading, that I've not kept up with your situation. I didn't get any email notifications, so I'd guessed that they got you solved. Rob was pulling his hair out... I remember one reply from Rob was, "WOW! His account is FUKKED!!!" I logged into his account and it attacked MY computer!!!... This is gonna take some time..." Glad it's resolved, man!

That first UBR was an integrated 7.000" internal-depth receiver extension. You have the right buffer weight for a .308AR, and the KAK short buffer is good. That spring was designed for DPMS's 3.8oz, 2.500" buffer. Put a Sprinco Orange spring in there. That will eliminate any issues that might be coming from the recoil system.

WEG, you have a gas system issue. The others stated it. Armalite AR-10 RIfle Gas Tube, first. Get that in there. Not some generic POS that's advertised as "AR-10 rifle gas tube" either - the real deal, from Armalite. You can buy one from a reputable vendor, but make sure the part isn't bullshiit. Armalite AR-10 Rifle gas tubes measure 15.5" long. They are not AR15 parts. Next, wide-open that gas block for testing, until you get this thing running right - that will be the only way in the world to determine if your gas port is the proper size - or too small. If it doesn't run wide-open - then you need to drill up that gas port diameter. Replace the gas tube first, with something that will work. You're ending available gas pressure to the carrier key, before it's supposed to end. That short gas tube cuts the gas pressure as soon as that BCG carrier key clears it - and the rest vents. Having a gas tube that's too short lets that carrier key and BCG rearward movement STOP receiving it's gas pressure too early. Doesn't look like much, but it's huge when you combine it with all the other issues - they just compound on each other, and make a gun that doesn't run. We measure hammer lock-time in milliseconds, and people think it's important. With gas system timing, it's equally important- but there are so many people out there that just say, "Nah, it's okay, it really doesn't matter..." It matters. Welcome here, from the FAL Files - partner up with Full30. Firearms communities need to stick together, and not be specific-snobs. Somehow, the Dems can all stick together to shut us down, but as a community, we're more interested in in-fighting and bickering, and bullshiit like that. Contact Robert over there, or here at... @Robert@FULL30

What all did you have to change to make this thing run? It didn't work, straight from the factory? At a minimum, I see a random AR15 recoil spring that was the lightest weight that you had - what else?

What bullpup rifles did you handle in the Army?...

ToolCraft BCG.

It only takes one squib load, man. "Pop and no kick" is what the Army used to train during BRM. A no-powder charge will never get a projectile out of the barrel, on primer-only. Hell, you'll have a very bad time just trying to push a projectile down the barrel with a cleaning rod - won't happen. That first one never gets out, and you don't notice and keep shooting - the second one, even if it's full power, is only going to slam into the first one and mushroom it tighter into the barrel. Then, you just stack 'em up behind each other. One of the gun shops I went to in NOVA had a revolver barrel in the display case - cut in half like that. 6 projectiles stacked up in there. Any time you get a pop and no-kick, you inspect it and see what's up...

Nope - and I've got time here... Look at a 9mm pistol barrel, in a pistol - it's usually 1:10" twist, and the barrels aren't anywhere near that - it doesn't have to spin a full revolution or rotation, in whatever twist length, to stabilize it.

For Char, right?...

IMR 4227 is what I use for my .30 Carbine loading, and it's a good powder - I've seen many references for it for 300BLK. H110 and Accurate 1680 I have loaded myself for 300BLK, and have both on-hand for it. I like the 1680 for the 150gr FMJ-BT loading, works well. The H110 did well at that, too, but got hard to find for a little while, and I found the 1680 instead.

What was the goal? You can run the 7.000" extension, with a heavy 2.500" buffer (like the KAK Industries) and the Sprinco Orange spring - those parts work well together, and are consistently manufactured.

Savage makes a good bolt gun. I like 'em.

Rifle buffer, and what looks like the Armalite AR15 carbine receiver extension. If running the AR15 carbine receiver extension is the goal, then you'll need to select the parts carefully (wisely). If just running a collapsible stock setup is the goal, then just buy the Armalite AR-10 Carbine Recoil System as a package, because it's alot cheaper that way. The AR-10 Carbine Receiver Extension is 7 5/8" internal depth, uses Armalite's own EA1095 spring, and AR15 H3 buffers (That's the direct equivalent of the Armalite AR-10 Carbine Buffer, identically). ^^^ If that was the original intent, then it looks like the incorrect Armalite receiver extension was ordered...

Their AR15 extension? Or this one? https://www.bravocompanyusa.com/BCM-Intermediate-Receiver-Extension-A5-Buffer-Tub-p/bcm-intermediate-re.htm

So was 3,540 meters, which is 3,871 yards. http://www.bbc.co.uk/newsbeat/article/40381047/a-canadian-sniper-breaks-the-record-for-the-longest-confirmed-kill-shot---but-how

It's not a world record long distance shot unless there's a dead bad guy at the end of it. Otherwise, it's just "recreational, and games..."

Couple years now - all their stuff. Looks scary when you look at prices, but register and sign up for emails, and nail that stuff at lower prices. The FireHose Flex pants are the very best pants that I've everhad the pleasure of beating the hell out of. They just rock. If y'all paid atention at the last fall shoot - that was all I had on. *** That comment above doesn't mean I was shirtless the whole time, like Vladmir Putin...

I'll admit I haven't read that link yet - but when I go to it, I might realize that I've read it before. I've done some time looking up OBT. However, my question on it (without reading it) is this: Was that bolt gun data, or gas gun data? With gas guns, you have a whole new world that you need to account for, with dwell time being one of the biggest factors. Barrel profile, they're all right-hand twist, so you can account for that in the harmonics (big part of the harmonics), those things are secondary, but important, but dwell time it the one on gas guns. True, but you also have to calculate that timing with a different bullet and load - to an accuracy node in that bullet and load. The OBT info accounts for this, but you need to test it on that specific load that the OBT states is accurate - and it's on. But test it. Gas guns complicate this, with dwell time...

This is the key, right here. It's tough to load a bipod on a concrete or wood bench - nothing for the feet to dig into, so it's tough to load up and get solid on it. Having a stop in front of you changes everything, with you combine bipod and bench. Off bags, it's a different technique - loose. Lay the rifle on the front bag, don't grip the rifle tight-as-hell, light trigger hand grip, and smooth trigger squeeze - try no to disturb it as much as possible. Shooting off rocks is like a bench - I reach forward with the offhand and grab a bipod leg to lock the bipod in position, then load it from there with firing shoulder - and get it into my shoulder.

I'd be WAY HAPPIER with Jodi Arias, but I'd smash AOC.

All kinds, but I can tell you that forge marks don't really matter.

Serious?...

Muzzle velocity. The most I can drive my 300BLK 150s to is about 1800fps through a 16" barrel. It's not even enough to explode Tannerite at 100 yards. Tried it many a time, thinking that I was missing the target - only to walk down range and find that I gave the 2-liter bottle a huge leak. Went back to the firing line and shot it with the Mk12 and BOOM!... Inherent accuracy in a projectile is in the bullet construction and muzzle velocity - how many people you know can shoot MOA with a 5" 1911 at 50 yards? The projectile isn't designed for that, it's subsonic, fat, slow, and that was never what it was meant for. Muzzle velocity is your friend in accuracy testing, as long as you hit an accuracy node in the loading, and stop there, before pressure signs. You picked a real tough cartridge to pull for an accuracy-over-barrel length test, that's for sure. I don't doubt in the least that this is gonna be good, and we're all going to find out alot. But you need speed, man. Heavies and barrels designed with fast twists for heavies aren't going to be the answer, overall. That 1:7" might not be bad at all, but the 1:8" os the "overall" twist on BLK - handles all of them about as well as a twist rate can, from superlight to 220 subs. That 1:7" is more for the higher end of the weight class on these, but it still might do great with a 125gr or something. This will be good, that's for sure.