98Z5V

Mortar it. If it has a collapsible stock, collapse it all the way first, fully closed. Then, mortar it.

9-year Necro on this one. I'll go measure this now... Edit -bolt face depth from the front of the lugs is 0.130" on an Aero/ToolCraft BCG. Firing pin protrusion from the front of the lugs is 0.090". Firing pin protrusion on this BCG would be 0.040". Measure multiple times, around the bolt face lugs - so at multiple lugs, both to the bolt face and to the firing pin protrusion. I'll measure an Armalite AR-10 BCG and a DWilson BCG later, and report back. Won't be tonight, though.

Have no fear - I'm not listening to their voices. Or the other ones in my head, brother. I have plans to get all that in order - or you'da seen 10 more guns built by now... That thing just went into the shop on Saturday... LONG story on that...

Of note, that thing is gonna need a gas port diameter close to or slightly over 0.100" in order to run right... I'll bet on that... That's inline with the old Fulton Armory 16" rifle gas barrels that Criterion made for them, with 0.105" gas port diameters - as far as dwell time goes. WC's 13.25" gas tube on a 14.7" barrel... One big difference between those two dwell times is gas block diameter - the WC is a 0.750" diameter, and the FA Criterion barrels were a 0.936" diameter - it's gonna be interesting to see what you come up with for a gas port diameter on this barrel... It might prove a point I've been trying to make lately... Gas block diameter matters in port sizing (barrel diameter at the gas block location)... Please report your results - so I don't have to buy another damn barrel...

Better buy the gas tube right from them, then. I've seen a few now listed like that, with a gas tube length of 13.25". Get the gas tube with the barrel. Wilson Combat is one of the companies doing this "in-between" gas port distance drilling/location on most of their barrels. It's not AR15 gas port distances/locations, and it's not Armalite AR-10 gas port distances/locations. It's literally, "in -between" those two dimensions. I guess the industry mentality on this garbage is, "Works for most of the people, most of the time, with most of the ammo..." If it's listed as "mid-length" it is NOT midlength AR15 gas tubes - it's Armalite AR-10 Carbine gas tubes. If it's listed as "rifle length," it is NOT AR15 Rifle gas tubes -it's Armalite AR-10 Rifle gas tubes... On a Wilson Combat big-frame barrel, run the Armalite AR-10 gas tubes- and there are only two. The Armalite AR-10 Carbine gas tube is 12 1/16", and the Armalite AR-10 Rifle gas tube is 15.500" in length. This "intermidiate length" and being 13.25" is something VERY new from them. It doesn't match up to anything else out there, minus a custom gas tube from White Oak Armament. On that 14.7" Wilson Combat barrel, you will need the gas tube directly from them - and I'd love to see pics of this thing installed. That gas tube needs to end directly in the center of the cam pin cutout in the upper receiver, as you look down at the bottom of the upper receiver. I have two Wilson Combat barrels on this platform, 16" .338 Fed barrel (mid length, they said), and 20" .260 Rem barrel (rifle length, they said). Both required the Armalite AR-10 gas tubes. The info is out here on the board, as evidence. Of note, my .338 Fed just runs like a champ, but I will be drilling up the gas port diameter in my .260 Rem barrel from 0.070" that it came with, to 0.080" in the near future. What it came with is just not enough, it should have been bigger, from them.

Us waterheads gotta stick together, brother...

I told her - and she didn't understand how awesome this really is... "You're 13 years old... you get to tell your friends that you just shot a .338 Lapua Magnum bolt action precision rifle, at a target 842 yards away - that's almost half a mile - with a mild wind... and you HIT that target almost directly in the center... Your friends might not understand that, unless they're playing "Call Of Duty" on their X-Box - but you did it, FOR REAL..." Her response was... "That is SO COOL!..." Damn right it is. She's a Sniper - she just doesn't realize that yet...

Somehow, I've found a way to explain complicated mechanical shiit in laymen's terms... That has got to be from Army time... If you can teach a Private how to break an anvil in a sandpit, you're explaining it right... I'm humbled by the comments most of the time, truly. I'm just a normal dude. I've been building MX race engines since 2002, and teaching others how to do it. There's a LOT of complicated shiit into making a stock 30hp 400cc engine into a 60hp 434cc engine with a 14.25:1 compression piston, cams, crank, carb swap, and carb tuning, fuel (octane) requirements - that build is race gas all the way, too. On those engines, I've been playing with EFI systems in MX since the 2006 model year - but I was playing with EFI systems since my 1987 RX-7 and 1993 Jeep Wrangler. I can explain all that like reading a children's book. I've literally written papers on 4-Stroke Engine Calculations, just as tutorials for people, and can have you understanding the differences between Static Compression calculations, and Dynamic Compression Calculations, Piston Speed Calculations, and (more importantly) Piston Acceleration Calculations... It doesn't matter if it's a 4-Stroke dirtbike, or a Mustang GT-350 engine - things you must do, in order to not blow it up. You build it wrong, and it's gonna blow. That rap evolved into turbo systems, on things that didn't have turbos from the factory, then it went to things that had turbos from the factory, and making them WAY better and more efficient. Like 230 RWHP on a EFI turbo one-liter engine with a CVT clutch system (that has 25~28% parasitic loss) - that's 300 crank horsepower from a one-liter engine. Extrapolate that into a 5.0L HO Mustang engine... That evolved into tuning CVT clutching... it never ends... Now, in looking at that for the last 17 years (11 on turbos) - look at my second passion... the AR platform, and the travesty that is the .308AR marketplace, with manufacturers doing whatever they want. Of course, I'll get involved in it, deep. I'll lay out the nuts and bolts of it all - whenever the topic arises. Whenever it does, I try to provide input that makes sense, and is easy to understand. If you really knew me, though - like some of these guys here - I'm just a knucklehead looking for the next adrenaline rush that I can trick myself into. There are guys on this board that are closer to me than alot of my own family members - true Brothers. I'll give you the shirt off my back, if it will help you out, and I'll try to work through issues that guns have - they're mechanical, they cannot out-think us. We just need to know what they're doing, accurately, to solve issues with them. I'm - literally - here for you, man. Seriously. If I can't figure it out, I'll find out why I can't figure it out, what went wrong, and solve it, eventually, somehow. Most of the time, though - here - I don't say anything... These guys got this.

There's 7,000 grains of powder, per pound, brother. When I'm loading .338 LM, at 90.0 gr per round, I get 77 loaded rounds in that pound. When I'm loading .308 Win, let's call the average load 43.0 grains per load, I get 162 per pound. That doesn't hurt as much as 45-70. On 45-70, I'm 50.0 grains per round, and that's 140 per pound. For some reason, I can only squeak out about 135~138 of them, though, and I don't have spillage. Weird. On 5.56 heavies, around 24.2 grains per round, I get 289 per pound of powder... For 5.56 I usually plan on 250-per-pound, and .308 Win I plan 150-per-pound. That's my plan when I buy powder, based on how much I need to load up. Works great when planing how much powder to buy, based on what my projected load up will be. On 300 BLK, I'm 17.8 grains per round on my 150s, so that's 393 per pound-can. I'm 16-something grains on my .30 Carbine, and it's over 400 rounds per pound can. Pistol is ridiculous, at 4 to 6 grains per round, depending on the round. I'm way over a thousand rounds of pistol ammo per pound of powder. My point in all this is simple - it doesn't matter what the hazmat fees are, per pound of powder, for testing purposes. It really doesn't. With that single pound, even of two powders, you will have WAY MORE powder than you need to make your determination, and finalize a load. What you're looking at is insignificant, compared to the overall picture here.

I did manage to blow out two "magazines" of 12GA through an SRM 1216 shotgun today. That thing is SICK... https://www.srmarms.com/shotguns They don't show it on their own website, but this one was OD Green. Spare magazine was ODG, too. Badass shotgun.

Here's the shiit on the Noveske Intermediate Length: Nobody in this industry uses a 1" gas block - but Noveske. Gas block diameter also is a major contributing factor in gas pressure - little known fact. If you're not going to use a Noveske 18" barrel with a 1" gas block diameter, then nothing in this discussion will pertain to anything that's commonly known on .308ARs. In your opening post, you're asking about 13.7~14" barrels. Noveske Intermediate Length Gas is already out the window, just on that...

I'm all about dwell time - when so many overlook it in the gas system. Dwell time is what drives gas port diameters. Let's talk about that. It's the exact reason that 16" rifle-gas barrels need to have a port diameter of AT LEAST 0.105" - because of the short dwell time, and .308 Winchester pressures. The specific Noveske you're referencing, with port location 11.5" from the face of the receiver - what's the barrel length on that Noveske? Because that determines the true dwell time - gas port location to end of barrel, from end of barrel BACK to the gas port location. If you're not buying a Noveske N6 barrel, then none of this matters... I'm your huckleberry on this one man - fear me not. Let's get this info out in the open, because so many people don't even comprehend it. Break it open, man.

QuickLOAD does this for you, brother. No kidding. https://www.accurateshooter.com/gear-reviews/test-quickload-review/ In addition to H110, running, literally EVERYTHING... Accurate 1680 will run from the 125s and up to the 225s. You could tailor a load for 110s, if that's your choice, but there's no published data on that projo weight. Hodgden Lil' Gun will run them all, all weights, 110~225gr. The Hornady 10 Manual lists IMR 4227 from 125~225gr 300BLK loads, BUT... that is my own .30 Carbine powder, right there, in 100gr and 110gr projectiles that I load for that little beast... I'm telling you, anything that will run the .30 Carbine will run 300BLK... You sometimes might not find "published load data" for a powder, and 300BLK - but if you look at .30 Carbine data, and make your own calculations for the BLK projo weight you are running - it will work.

You are working with the weirdest caliber ever, trying to make it into an accurate shooter. I'll explain. The 300BLK is a 5.56 case that's cut back 10mm in order to accept a .308" diameter bullet, and it can only run (functionally) on pistol powder. The beauty of the 300BLK is that is can functionally run lightweight projectiles at supersonic velocities, and it can run some SUPER heavy projectiles at subsonic velocities. In only one world - that is the perfect cartridge. Supers that some people have pushed to 800 yards in short barrels, and heavy-ass subs that would knock an elephant out at 30 yards, if you hit him in the temple, or his weak boxer-jaw... As an example, I'll use H110 powder, because that one runs ALL 300BLK loads. You can run a 110gr Hornady V-Max to it's max load of 2400fps on 20.2gr of H110. You can run a 225gr Hornady BTHP-Match to it's max load of 1300fps on 10.9gr of H110. In less that 10 grains of powder, you've pushed a bullet from 1300 fps to 2400fps - but more importantly, you've now pushed a bullet that's 115 grains apart, in bullet weight. From the same platform. No other cartridge does this. When you're splitting hairs over things in this build, THE most minute changes will affect your accuracy. You have to pick the best balance for weight (sectional density), the best ballistic coefficient, balanced over the perfect load, for your barrel length. You, definitely, have not picked an easy fight in this one, my friend. You probably picked the very most difficult cartridge to try this on - even though it's the the cartridge that's got the widest range of projectiles available. It's a rifle cartridge, a hybrid small-case and big-bore projectiles, running on pistol powder. It would literally be easier to make a super-accurate M1 Carbine. They both run off the same principles, and the same powders. At damn near the same charge weights. I can run 10 grains of the same powder in the same projectile - on the same projectile - on several different loads. 45-70 comes to mind, with my 405gr handloads. I load that thing LIGHT, too. It's still a beast. 50 BMG is easy to do in that - 10 grains barely changes anything on that one. .338 Lapua Magnum - I can make some differences over 10 grains of powder, in the same projectile weight... Just in .338 Lapua Magnum, on a 285gr Hornady BTHP-Match projectile, I can load from 72.9gr to 86.5gr on RL-22 powder, and go from 2400 fps to 2750fps, given a 27" barrel in 1:10" twist. That's a 13.6 grain range I can go, just on that one projectile, to get my data right, for the rifle, and pressure loads... There's alot of data that has to be figured out on this gun - and making it a super-accurate gun. You're working with a small-caliber rifle cartridge (case) with a large-caliber projectile, running from pistol powder. There's not alot of room for error - but there's also not alot of room for fine-tuning loads and getting super-accurate here, brother. Like I said way early on this one - you picked one hell of a cartridge to do this experiment with.

Eff it - the steel is still in the truck, I didn't unload that heavy shiit today. I had to go out there and get a pic of that 842 from today, showing those two .338 LM RPR hits. My buddy's little girl can SHOOT!...

Had a buddy from work ask me a few weeks ago if we could get back out there, so we set today up. He brought his wife and two kids (awesome kids!), and I had one local referral from GP John - the guy just bought a .338 LM Ruger Precision Rifle, and the Athlon 6~24 Argos BTR scope. I kinda know that scope by now. At any rate, we set up steel at 300, 500, 850 (842 today) and 1k (995 yards today). Wind was only 2~5mph, variable, but the location of the 1k was in distance brush (brush between the target and shooting location). Couldn't see any splash, no dirt kicked up, nothing. I put a dozen rounds after it in the .260, and just couldn't make a mark on it. Win some, lose some. No one hit the 1k today. Tore the 842 up pretty bad. Zero's the scope on that RPR .338 LM at 100 for the owner, then he got on it. Zero info for a dope chart for the gun, so we started guessing, and shooting at the 842 with it. Drew it down with dirt splash - then corked it on the next to last round - centermass, right on the money, once we figured out it was 6.0 mils of drop to the 842. Last round left - only one left - and I turn the gun over to the owner and tell him the drop - favor the right side of the target, due to the small wind. He hands the round to my buddy's 13-yo girl, and gets her behind the gun... Tells her, "here's the very last round today for this rifle. Get down there, listen to Tom, and do what you need to do..." She corked that thing about 3 inches away from my hit. So, no target pics today, no throwdown range pic. Just alot of fun. However, I DO have some pics of today... You ever seen a 4ft Dandelion grow a flower like THIS?! This is just nuts. We had somuch rain this winter and spring, that we've got all kinds of weird shiit growing in the desert now... This blew my mind, seeing this flower... on a dandelion plant... Next, I'm making the drive home, round a corner, and the buzzards FREAK and take off - I didn't even know they were around the corner before I dragged that bigass truck around it - and they took off. I decided to turn around, and see why they were all there. They were in a wash, right beside the road. I parked, climbed down into the wash... and it looked like rope. Snakes... They got at least 4 snakes down there, and they ripped them apart. From the last one I found, it looked like a red racer. I found red racers out here in the desert eating young rattlesnakes before, too - I think I posted pics of that. At any rate, I can't seem to understand how buzzards would get a bunch of snakes at the same time, in the exact same area. Boggles my mind. The carnage: Overall - badass day. We figured out that the RPR .338 LM is 6.0 mils of drop at the 850 (842 today). That's the current reigning champ at "the least amount of drop on the 850" thus far... I thought the .260 was THEEEE SHEEEIIIT with 6.5 mils on that same target. This particular .338 LM bested that number...

What's the brass look like at those loads? If there's zero issues, I'd push the loads up tothe next accuracy node and check brass there - unless you see some serious brass issues along the way upwards.

Welcome aboard, Dog - glad to have you here. Ask anything you want - we'll get to it. Parts-compatibility is the biggest thing to overcome on this platform - but we have the parts and the compatibility figured out. Ask before you buy, and we'll set you straight on what works together, and what doesn't work. And, what parts are shiit...

This makes me happy - thank you for the update. I mean that.

Get the Armalite AR-10 rifle gas tube (15.500") in that thing, as quick as you can. Please, for the children and the kittens. Retest it after that, and you'll see your ejection pattern change drastically.

8.2lbs, irons only, no mag. You start adding what you need, and 2lbs of loaded 20-rd mag, and it's a pig. That's the weight for the 20' barreled version, and NOT the heavy-barrel SSR. That fat girl comes in at 10.7lbs, irons only, no mag...

That's a pretty good score for a PA-10!!!

WOW!!! That is THE SHORTEST gas tube I've seen in one of these things!!! What gas system is it running? It's either midlength or rifle gas.

But - what gas system?...

Pistol-caliber ARs running on blow-back operation are REALLY HARD on hammer pins - just from the blowback operation. You run longer barrels than in a "real handgun," so you get a velocity boost out of them. Blow-back is hard on hammer pins. The KNS Prec non-rotating setup is tough, and will take the punishment. Those are the exact ones I use in mine.