Is it possible...an accurate SBR

mdesign

mdesign

Gunny Sergeant
Full Member
Minuteman
Nov 2, 2004
2,134
10
Nebraska
#1
I would like to do a suppressed SBR in the AR-15 platform but have heard that you lose accuracy and reliability. I'm hearing that the piston platform like LWRC are better but have no personal experience to draw on.

I want sub-moa if possible and I do not want malfunctions.

Would like to hear from those of you that have been there and done that, what would you have done differently?
 
#2
Re: Is it possible...an accurate SBR

I'm not sure about sub-moa, but HK claims "superb accuracy" from their 10.5 inch HK416. If the system is piston, there should be no problem with reliability, especially with the above mentioned HK416!!! I think the LWRC is a great option as well.

Keep in mind though that the 5.56x45 is not really optimized for a short barrel. Something like the 6.8 spc has far better ballistics in that barrel length, from all of my research.
 
#7
Re: Is it possible...an accurate SBR

No, wasn't joking, have heard a number of stories about how people could not do better than 1.5"-2" at 100 yds with similar setups. Looks like like accuracy should not be a concern with a good barrel. Could this change with subsonic ammo or should one use a faster twist, say 1:7 or 8 if you also want to do subsonic in an SBR?

Was thinking of going with a 5.56 just because ammo is commonly available but am open to a different caliber if there is one that lends itself better to this application. Really don't want something like the 300 Whisper, just to specialized (expensive brass, ammo) for me.

Also been warned to some suppressor Mfg will not warranty if the barrel length is less that 10"? I have an email into a couple asking this question so I should know pretty soon on that account.
 
#9
Re: Is it possible...an accurate SBR

go 1:7 on the short stuff. Mine are Noveske as well. my 12.5 will outshoot me, my 8.5 6.8 shot a 1/2 5 shot group at 100 this weekend. I shoot factory 77gr smk black hills stuff. never tried reload so there is no telling how good it could be.
 
#11
Re: Is it possible...an accurate SBR

I believe the article that is being discussed was the comparison of the Noveske 14.5 and the 18, being that the 14.5 was as accurate or more accurate than the 18. Pretty impressive for a shorty but then again you are talking about noveske, been making precision barrels for awhile now. I own a 7.5 and it isnt a target rifle by no means but I havent had any problems tagging targets out to 300 with it. Its just for fun and I love it.
 
#13
Re: Is it possible...an accurate SBR

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MSTN</div><div class="ubbcode-body">Our 12.5" Noveske S/S barrel custom uppers will shoot with just about any 5.56MM short of one with a 20" service rifle or varmint contour. </div></div>

And Wes would know!!! MSTN has built a couple of AR uppers for me (and for others I regularly shoot with) and they are all incredible shooters!!

Good quality components (barrel, bolt, etc.), combined with proper assembly, ammunition and shooter, should yield you excellent accuracy with an SBR. Barrel length has little to do with accuracy potential, but has a lot to do with MV and terminal performance at extended ranges.

Good luck!
 
#14
Re: Is it possible...an accurate SBR

Thanks all, was not aware of MSTN until several of you pointed out their product. I'll have to make a call with some specific questions but it looks like they have several options for what I am trying to do.
 
#15
Re: Is it possible...an accurate SBR

Any recomendations for a barrel between 10.5"-12.5" that don't break the bank? I got on to post the same question about acuracy, and keep seeing the noveske barrels but I'm trying to avoid paying that much.

Also what brand should be avoided? I saw a link for DEZ arms barrels and never heard of them before on google.

Thanks for beating me to post the acuracy issue, it's nice to already have alot of info posted when I log on.
 
#16
Re: Is it possible...an accurate SBR

The hammer forged chrome lined barrels offered by Noveske will shoot MOA or better with match grade ammo, but cost less than his stainless barrels. The same goes for Daniel Defense HFCL barrels. I would expect similar results with the HFCL barrels from Centurion and Bravo Company.

Keep in mind that only a small fraction of the 5.56MM ammo produced - or that we typically shoot out of an SBR - is capable of this sort of accuracy. But, a HFCL barrel has another advantage; it will hold up better than a typical button rifled CL barrel, regardless of the ammo you feed it.
 
#19
Re: Is it possible...an accurate SBR

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: fastford</div><div class="ubbcode-body">just spend a few bucks more and get the 12.5 noveske from Wes, it is ridiculously accurate!~ </div></div>

+1
 
#20
Re: Is it possible...an accurate SBR

My 10.5 LMT MRP setup has no problem shooting 77 SMKs at .75" at a 100. this was a thrown together testing load done by a friend who wante my to try them in the 10.5. this was with Varget and mixed headstamp brass. I'd like to know what it could do if the load was truely tuned. My MRP is responsible for being a bullet spitter. The 77 SMK idea was just for fun.
 
#21
Re: Is it possible...an accurate SBR

An MSTN 12.5 Noveske build, or a plain old Noveske 12.5 Stainless upper will shoot better than most shooters. Way better than MOA. My 14.5 LWRC is not as accurate as my 12.5 Noveske was, although it's perfectly good.
 
#22
Re: Is it possible...an accurate SBR

Reliability--more of an issue, but the good ones all seem to run.

Accuracy, not really. Reason for the accuracy problem you heard is probably shooter or setup related--most SBRs probably don't have high powered scopes on them, which doesn't affect the guns accuracy, but maybe makes it harder to hold the exact same POA each time, if you're trying to shoot one hole groups.

And esp the 10.5" ones are louder, tons more concussion than a 16", making them flinchier (if that's a word) to shoot.
 
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