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Posted: 11/15/2018 8:09:12 AM EDT
[#1]
To close the loop, I got a response from Rainier when I contacted them with the basic rundown I gave above about all sorts of handloads as well as 168gr and 175gr FGMM "grouping" in the 2" range and beyond:
That certainly is worse than the accuracy we expect out of our UM barrels. We guarantee them to be sub-MOA with factory match ammo, and expect ~1/2 MOA or better. Normally I’d get that barrel in here and get a replacement out to you, but we actually discontinued that size. What I’d like to do is get that entire upper in here, have the armorers go over it and test fire it to see if there’s some (however unlikely) chance that it’s just an issue with the assembly itself that we can rectify and get you up and running with it. If not, We can either swap you for a different barrel, or get a new 12.5 made (which could take a few months given our production queue). Let me know if that works for you and I’ll get a label out to you. Replied to the email and asked if they wanted the upper, the upper and lower, or the entire rifle and my suppressor, since it's only shot suppressed and the AAC 51T muzzle brake is pinned/welded on the end of the barrel. Will see what they want shipped to them and go from there. |
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Posted: 12/1/2018 3:53:46 PM EDT
[#2]
Will running a fixed, non-adjustable gas block be troublesome? I assume it would be overgassed.
If that is the case, what GB does the hive recommend? I had an upper with a Seekins adjustable GB, but I have to admit I am not a fan of dinky set screws "holding" the adjustment screw after the adjustment is made. Is there a click-type GB that can be used? Either a small lever or rotating knob? Maybe something that has a detent on it? |
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Posted: 12/1/2018 4:31:37 PM EDT
[#3]
I run a 13.5" LMT MWS (original heavy profile) pinned with a FSC30...does just fine with accuracy...the muzzle blast is not any worst really than a 14.5 AR with a brake.
She gets a hair over 2 MOA with M80 ball...which is GTG in my book. Malaysian surplus at times will dip below 2 MOA...but I would call it a solid 2 MOA gun with mil ammo. Only mods I have done is Strike Industries AR10 flat wire spring. It is a sub 500 meter gun for me. |
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Posted: 12/1/2018 4:45:56 PM EDT
[#4]
Quote HistoryQuoted:
Will running a fixed, non-adjustable gas block be troublesome? I assume it would be overgassed. |
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Posted: 12/2/2018 10:22:52 PM EDT
[#5]
Quote HistoryQuoted:
With a new-to-me 14.5 pinned on the way, I am wondering this too.. Wanting to suppress it but not sure without an adjustable GB... Quote HistoryQuoted:
Quoted:
Will running a fixed, non-adjustable gas block be troublesome? I assume it would be overgassed. Heard that if only using 110g ammo suppressed they can run alrigh w/o an adj gas system. I used an SLR but did not shoot it enough to recommend as necessarily durable. Some of the companies have disclaimers about their clickable blocks w pistol gas systens or larger chamvering SBRs... I redid the barrel, made it 11.5” to get better balance but have not shot it yet. Went to a wotjak which is infinitely adjustable w the secondary small brass locking screw. Unsure if it will be g2g w/o rockset or what?? Ideal block for suppressed/non suppressed 308 IMO, is the micro MOA govanah. Never tried and not sure if they are still available? A little heavy probably tho |
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Posted: 12/5/2018 8:15:02 PM EDT
[#6]
The 308 on bottom was just finished, more or less, last night with a 12.5" BA barrel. It's was bought new as a factory Stag 16inch "other" because the CT AWB only covers pistols and rifles which lets these slip through. Because there are apparently no 11" or 11.5" forearms made for the AR308 platform, and I was going to use a Surefire MB762, I installed a Hughes Precision .7" 5/8 to 5/8 extender to allow the shoulder of the brake to be out forward of the forearm. Without it the shoulder of the brake was recessed about a quarter inch under the rail so there was no way the locking collar on the Warden would fit. I will be replacing the FastFire 3 with an EOTech XPS & G33 setup and adding a SF SOCOM 300 SPS in the future. I'll deal with an adjustable gas block then. Also I blame OP for this build... 
Stag Arms 10S factory "other" 12.5" BA barrel BCM Mod 4 CH LaRue MBT SBA3 Brace Aero 12" M5 Atlas R-One Surefire 762 Brake & Warden blast can Magpul K2, MVG, trigger guard EOTech XPS2-0 |
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Posted: 12/7/2018 2:15:10 AM EDT
[#7]
^Weight?
And weight of OPs build? |
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Posted: 12/7/2018 4:30:49 AM EDT
[#8]
Quote HistoryQuoted:
^Weight? And weight of OPs build? Edited to add weight with bare muzzle. |
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Posted: 12/7/2018 9:25:53 AM EDT
[#9]
Quote HistoryQuoted: Approximately 8.6 pounds, unloaded |
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Posted: 12/7/2018 10:07:43 AM EDT
[#10]
Quote HistoryQuoted:
To close the loop, I got a response from Rainier when I contacted them with the basic rundown I gave above about all sorts of handloads as well as 168gr and 175gr FGMM "grouping" in the 2" range and beyond: That certainly is worse than the accuracy we expect out of our UM barrels. We guarantee them to be sub-MOA with factory match ammo, and expect ~1/2 MOA or better. Normally I’d get that barrel in here and get a replacement out to you, but we actually discontinued that size. What I’d like to do is get that entire upper in here, have the armorers go over it and test fire it to see if there’s some (however unlikely) chance that it’s just an issue with the assembly itself that we can rectify and get you up and running with it. If not, We can either swap you for a different barrel, or get a new 12.5 made (which could take a few months given our production queue). Let me know if that works for you and I’ll get a label out to you. Replied to the email and asked if they wanted the upper, the upper and lower, or the entire rifle and my suppressor, since it's only shot suppressed and the AAC 51T muzzle brake is pinned/welded on the end of the barrel. Will see what they want shipped to them and go from there. |
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Posted: 12/7/2018 3:03:18 PM EDT
[#11]
Quote HistoryQuoted: That is roughly the same as my MWS with the 13.5" setup...nice. It is really not that bad....especially on the MWS with its massive barrel extension... I'm pretty happy with it. It handles well, feels lighter than it is and balances about dead smack in the middle of the mag well when loaded. The Warden actually makes a noticeable difference in feel but that will only be used when I don't want to destroy everyone and everything to either side of me. |
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Posted: 12/7/2018 7:52:38 PM EDT
[#12]
Quote HistoryQuoted:
.... Because there are apparently no 11" or 11.5" forearms made for the AR308 platform, and I was going to use a Surefire MB762, I installed a Hughes Precision .7" 5/8 to 5/8 extender to allow the shoulder of the brake to be out forward of the forearm Here's what I was thinking of but now I see it was 11.7 and that .25" in extra length is probably the bigger issue https://slrrifleworks.com/index.php?route=product/product&path=107_151_156_158&product_id=903 |
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Posted: 12/7/2018 9:55:25 PM EDT
[#13]
Yeah, SLR were the only guys I found with rails in the 11" range. It was just like you said, the 11.7" would still have been just a bit too long and their price was also more than I was willing to spend. Other than SLR, everyone who makes .210 height rails only seem to offer 10.5" and below or 12" and up. The extender works fine, but between it and a spacer on the real muzzle, plus shims for the brake, it adds almost 7/8" and is just a tiny bit longer than I was looking for with the 12" rail. Maybe in the future something will come to market in the 11" range that would be ideal for a 12.5" barrel.
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Posted: 12/8/2018 11:02:41 AM EDT
[#14]
I think 13.5" is about perfect for a large frame 308 AR...its the same length as a 16" AR15...muzzle blast isn't that bad...I run a FSC30 on it.
But man...does it balance pretty well... |
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Posted: 12/16/2018 3:12:15 PM EDT
[#15]
Final bits came in and took it out for the maiden voyage. Without the warden attached, I can't believe how flat and soft it shoots. With the warden there's definitely more muzzle rise, felt recoil, and everything goes yellow in front of you each time you pull the trigger. This just replaced my .50AE Desert Eagle as my favorite ridiculously absurd range toy, and no broken wrists after three or four mags!
 A buddy from work putting a few downrange. 
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Posted: 12/18/2018 4:05:21 PM EDT
[#16]
Quote HistoryQuoted:
They aren't the absolute cheapest game in town, but they're competitive, and this right here is exactly why i have no qualms paying a bit more through them. Hope they can get it sorted for you. Quote HistoryQuoted:
Quoted:
To close the loop, I got a response from Rainier when I contacted them with the basic rundown I gave above about all sorts of handloads as well as 168gr and 175gr FGMM "grouping" in the 2" range and beyond: That certainly is worse than the accuracy we expect out of our UM barrels. We guarantee them to be sub-MOA with factory match ammo, and expect ~1/2 MOA or better. Normally I’d get that barrel in here and get a replacement out to you, but we actually discontinued that size. What I’d like to do is get that entire upper in here, have the armorers go over it and test fire it to see if there’s some (however unlikely) chance that it’s just an issue with the assembly itself that we can rectify and get you up and running with it. If not, We can either swap you for a different barrel, or get a new 12.5 made (which could take a few months given our production queue). Let me know if that works for you and I’ll get a label out to you. Replied to the email and asked if they wanted the upper, the upper and lower, or the entire rifle and my suppressor, since it's only shot suppressed and the AAC 51T muzzle brake is pinned/welded on the end of the barrel. Will see what they want shipped to them and go from there. |
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Posted: 12/19/2018 6:05:23 PM EDT
[#17]
12.5 6.5 Creedmoor
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Posted: 12/19/2018 6:39:50 PM EDT
[#18]
That is freaking sick man.
I'm thinking about the same barrel length myself. What's it weigh right now? What barrel? |
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Posted: 12/19/2018 7:43:45 PM EDT
[#19]
Quote HistoryWhat kind of accuracy are you getting with that sweet toy? Tempting to change my 12 inch barrel 308 to 6.5CM.
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Posted: 12/19/2018 10:04:12 PM EDT
[#20]
Nice 6.5cm.
How does it run? Do you have a velocity? |
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Posted: 12/20/2018 11:41:22 PM EDT
[#21]
Quote HistoryBeen toying with this idea since I love my 12.5" 308 so much
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Posted: 12/23/2018 3:26:12 PM EDT
[#22]
Quote HistoryQuoted:
Nice 6.5cm. How does it run? Do you have a velocity? PLEASE report back w/ MV values and weight. Thanks! |
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Posted: 1/16/2019 5:24:40 PM EDT
[#23]
@vol_fan
bumping for velocity. I shot my 11.5" 308 the other day. MV was about 2230fps w/ a moderate 168 grain SMK load, but I realize it was not the one Ran out of light before I was able to chrono any other ammo... when barrel was 12-5/8" a similar load did about 2300 |
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Posted: 1/17/2019 2:58:28 PM EDT
[#24]
I'm loving my 12.7" .308
LWRC REPR MK II 12.7" 7.62x51mm with AAC-SDN6 LWRC IC-A5 10.5" 5.56mm with AAC M4-2000 LWRC SIX-8 A5 8.5" 6.8mm SPC 
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Posted: 1/20/2019 7:20:56 PM EDT
[#25]
Aero M5 Receivers, Ritch's Precision Guns 12.5 6.5 Creedmoor barrel, Carbine Gas System, Cryptic Coatings BCG, SBPDW brace, Aero LPK, Geissele SSA-E, 14 inch SLR Solo Rail, B5 Grip, Noveske K5, Strike Industries dust cover.
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Posted: 1/20/2019 7:42:29 PM EDT
[#26]
Looks great!
Have you run it over a chrono? |
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Posted: 2/22/2019 4:57:09 AM EDT
[#27]
Quote HistoryQuoted:
I'm loving my 12.7" .308 LWRC REPR MK II 12.7" 7.62x51mm with AAC-SDN6 LWRC IC-A5 10.5" 5.56mm with AAC M4-2000 LWRC SIX-8 A5 8.5" 6.8mm SPC https://i.imgur.com/OwpN9jo.jpg |
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Posted: 2/22/2019 5:22:04 PM EDT
[#28]
Quote HistoryQuoted:
Aero M5 Receivers, Ritch's Precision Guns 12.5 6.5 Creedmoor barrel, Carbine Gas System, Cryptic Coatings BCG, SBPDW brace, Aero LPK, Geissele SSA-E, 14 inch SLR Solo Rail, B5 Grip, Noveske K5, Strike Industries dust cover. https://i.imgur.com/zdyCcnS.jpg https://i.imgur.com/azM9ZZw.jpg https://i.imgur.com/GObRojv.jpg https://i.imgur.com/TMhR2CH.jpg |
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Posted: 4/23/2019 11:06:42 AM EDT
[#29]
To put my own 12.5" Rainier Arms Ultramatch woes to bed, I got the rifle and SDN-6 suppressor back from them. Their findings were that unsuppressed they could hole sub-MOA groups at 200yds from a rest with match ammo. With the SDN-6 in place it became shotgun patterns.
So, the can is going back to AAC for a re-core. I've run this can hard since 2012 and I guess it has enough baffle erosion that is causing some erratic effects to the flight path of the projectile from shot to shot. ES/SD for loads is good, and no baffle strikes, just looks like the can and this .308 rifles aren't playing nicely. AAC sent me an RMA without question so I'll hopefully get it to them by the weekend and will go from there. Kinda felt like a fool for not having shot groups unsuppressed, but after seeing round holes at close range I did all my load dev with the can on as that's how it was going to be used full-time. Lesson learned... |
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Posted: 4/23/2019 11:34:34 AM EDT
[#30]
Dammit... I have been toying with the idea for a while, but just ordered a 16" Wilson Combat ranger fluted instead.
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Posted: 4/24/2019 11:48:48 AM EDT
[#31]
Quote HistoryQuoted:
To put my own 12.5" Rainier Arms Ultramatch woes to bed, I got the rifle and SDN-6 suppressor back from them. Their findings were that unsuppressed they could hole sub-MOA groups at 200yds from a rest with match ammo. With the SDN-6 in place it became shotgun patterns. So, the can is going back to AAC for a re-core. I've run this can hard since 2012 and I guess it has enough baffle erosion that is causing some erratic effects to the flight path of the projectile from shot to shot. ES/SD for loads is good, and no baffle strikes, just looks like the can and this .308 rifles aren't playing nicely. AAC sent me an RMA without question so I'll hopefully get it to them by the weekend and will go from there. Kinda felt like a fool for not having shot groups unsuppressed, but after seeing round holes at close range I did all my load dev with the can on as that's how it was going to be used full-time. Lesson learned... |
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Posted: 4/25/2019 8:55:06 PM EDT
[#32]
When will psa get a sub 18” 308 upper rifle out?
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Posted: 4/26/2019 9:39:28 AM EDT
[#33]
Quote HistoryQuoted:
Nice of rainier to do that Quote HistoryQuoted:
Quoted:
To put my own 12.5" Rainier Arms Ultramatch woes to bed, I got the rifle and SDN-6 suppressor back from them. Their findings were that unsuppressed they could hole sub-MOA groups at 200yds from a rest with match ammo. With the SDN-6 in place it became shotgun patterns. So, the can is going back to AAC for a re-core. I've run this can hard since 2012 and I guess it has enough baffle erosion that is causing some erratic effects to the flight path of the projectile from shot to shot. ES/SD for loads is good, and no baffle strikes, just looks like the can and this .308 rifles aren't playing nicely. AAC sent me an RMA without question so I'll hopefully get it to them by the weekend and will go from there. Kinda felt like a fool for not having shot groups unsuppressed, but after seeing round holes at close range I did all my load dev with the can on as that's how it was going to be used full-time. Lesson learned... I told them I'd had the barrel/rifle for a couple of years at this point and they quickly paid to have me ship it to them, ran rounds through it under a few different set ups, and let me know the results before shipping it back on their dime. Could not have asked for better service. |
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Posted: 4/30/2019 5:09:35 PM EDT
[#34]
Quote HistoryQuoted:
I thought they handled it above and beyond normal customer service requirements. I told them I'd had the barrel/rifle for a couple of years at this point and they quickly paid to have me ship it to them, ran rounds through it under a few different set ups, and let me know the results before shipping it back on their dime. Could not have asked for better service. Quote HistoryQuoted:
Quoted:
Quoted:
To put my own 12.5" Rainier Arms Ultramatch woes to bed, I got the rifle and SDN-6 suppressor back from them. Their findings were that unsuppressed they could hole sub-MOA groups at 200yds from a rest with match ammo. With the SDN-6 in place it became shotgun patterns. So, the can is going back to AAC for a re-core. I've run this can hard since 2012 and I guess it has enough baffle erosion that is causing some erratic effects to the flight path of the projectile from shot to shot. ES/SD for loads is good, and no baffle strikes, just looks like the can and this .308 rifles aren't playing nicely. AAC sent me an RMA without question so I'll hopefully get it to them by the weekend and will go from there. Kinda felt like a fool for not having shot groups unsuppressed, but after seeing round holes at close range I did all my load dev with the can on as that's how it was going to be used full-time. Lesson learned... I told them I'd had the barrel/rifle for a couple of years at this point and they quickly paid to have me ship it to them, ran rounds through it under a few different set ups, and let me know the results before shipping it back on their dime. Could not have asked for better service. Make me want to get a barrel from them cause sometimes it take smena while tog get around to a build |
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