Thinking of buying a Rock River 10.5" .223...

A

Aer454

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Minuteman
Oct 13, 2009
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WA State www.TraditionalOutdoorsman.com
www.traditionaloutdoorsman.com
#1
I'll be setting it up with holographic sights and stuff, pretty much a close-quarter type set up. But I'm curious to know what sort of realistic groupings I could see on average, at say 100 yards or 200 yards? I know, I know - twist rate, ammo selection, etc, etc. makes this all variable. Just looking for a really general "out of the box expectations" with some 55-62gr rounds.

Thumbing through Rock River Arm's catalogue I see some of their Varmint 20-26" barrel configurations getting 1 to 1.5 MOA or so they claim. But they dont post anything for the 10.5" barrel.

Should I be able to expect 2-3" groups at 100 yards? Sub 8" groups at 200 yards? Just looking for some peeps with more knowledge and experience than I have to give me some rough estimates. Thanks!
 
#2
Re: Thinking of buying a Rock River 10.5" .223...

I have several rock wiver long arms, all the 1 inch claims turn out to shoot 1/2 moa.

I also have several sbr / pistol setups but have not done long range testing. I have nothing but praise for rock river.
 
#5
Re: Thinking of buying a Rock River 10.5" .223...

Never heard of BCM or Spikes, I'll check them out, thanks for the tip. Anything wrong with Rock River that I should know about?

rocky creek - if you get a chance to try it out sometime shoot me the results. I'm mostly curius if enganging man-sized targets out to 200 yards or so would be realisticly within the guns abilities or not. I own a set of Combat & Survival books and they do little info slips on different guns and said the MP5 has an 'effective' range out to 400 yards. I was a little surprised by that. Shorter setup, shooting 9mm, etc. Was wondering how the cut-down AR would compare shooting 223.
 
#6
Re: Thinking of buying a Rock River 10.5" .223...

no there is nothing wrong with rock river . spikes and bcm make good stuff also but I wouldnt let the kool aid influence my purchase.
 
#7
Re: Thinking of buying a Rock River 10.5" .223...

I really doubt that if you were blind folded and shot the rifles you would have an idea of which one you were shooting. I have AR's that are DPMS, Rock River, Noveske, Olympic Arms, AR Performance. They are all fine AR's and I would buy any of them again. I also like BCM, Larue and Spikes and would buy them too.
 
#8
Re: Thinking of buying a Rock River 10.5" .223...

Sometimes the advantages of one part over another become more apparent over time. My BM rifle worked great for awhile, but when I started to put more rounds down range the more problems started showing up. If you get the 11.5 barrel it is Cold Hammer Forged and 11.5 has more dwell time and runs a little smoother (look at what G&R tactical has writen about this on m4 carbine.Maybe the BCM barrel goes 25,000 rds instead of 20,000, maybe 1 1/2 moa instead 2 moa. Both will get the job done at 200yd and min of man targets.
 
#10
Re: Thinking of buying a Rock River 10.5" .223...

I have the exact RRA upper you describe, I have a red dot on it and it will shoot 3/4" at 50 yards, I haven't had it on paper past that, but I can easily hit my 18x22" steel at 400 yards.
 
#11
Re: Thinking of buying a Rock River 10.5" .223...

I have two Sig 556 pistols, which are fairly similar (in concept) to the RRA LAR-15. They have 10.25" barrels and I have several thousand rounds through these pistols, so I can tell you what my experience has been.

First, I should point out that both have Harris BRM bipods/LaRue QD mounts and Sig diopter BUIS and several red dot optics, which I use on occasion, but I also planted a couple of scopes w LaRue mounts on them, just for some playtime and to see what they (I) could do at longer range. Finding scopes for these was not easy, without a stock, you need in the neighborhood of 6-7" eye relief. I have handled the RRAs and IMHO, don't plan on trying to use the end of that tube as a stock.

What I finally ended going up with was a Burris 1-2.75X Scout scope on one, and a Bushnell Elite 6500 1.25-8X. With either of these scopes at 25 yd (bench), I can put 20 rnds into a single hole slightly smaller than a quarter. At 50 yds (bench or prone), this opens up considerably to between 2.5 to 4". At 100 yd, the best I have been able to do is around 5 to 6" groups.

The real reason for this IMO has nothing to do with the barrel length. I believe the barrel is capable of MUCH better accuracy than that. It's the ergonomics of shooting a weapon without a stock. Even with the bipods and a rear bag, it is much more challenging to steady the pistol and hold it firm as compared to a stocked weapon. I am seriously considering going the Stamp/SBR route, because I think these would make pretty remarkable CQB weapons if they had stocks, but also allow you to go out to 100 yd with no problem.

So having said all of that, I absolutely LOVE shooting these pistols and I wouldn't trade them for anything. If you end up getting one, I think you will have a lot of fun and will be very happy with the buy.

BTW: also plan on getting some really good ear protection and annoying people next to you at the range, they are LOUD!
 
#13
Re: Thinking of buying a Rock River 10.5" .223...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: zia shooter 1</div><div class="ubbcode-body">Sometimes the advantages of one part over another become more apparent over time. My BM rifle worked great for awhile, but when I started to put more rounds down range the more problems started showing up. <span style="font-weight: bold">If you get the 11.5 barrel it is Cold Hammer Forged and 11.5 has more dwell time and runs a little smoother </span>(look at what G&R tactical has writen about this on m4 carbine.Maybe the BCM barrel goes 25,000 rds instead of 20,000, maybe 1 1/2 moa instead 2 moa. Both will get the job done at 200yd and min of man targets. </div></div>

This is the way I'd go if I were getting a DI SBR. Bravo Company makes some decent, affordable uppers in this config.
 
#15
Re: Thinking of buying a Rock River 10.5" .223...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hellbender</div><div class="ubbcode-body">I have the exact RRA upper you describe, I have a red dot on it and it will shoot 3/4" at 50 yards, I haven't had it on paper past that, but I can easily hit my 18x22" steel at 400 yards. </div></div>

Damn, that's way better than I was expecting. I'd be more than happy with that. The exact gun I'm looking into getting is the RRA LAR-15 A4 10.5" with a Quad Rail. Wanting to go with an EO Tech holographic sight, and SureFire's vertical foregrip/weaponlight. Thanks for the post!
 
#16
Re: Thinking of buying a Rock River 10.5" .223...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gstaylorg</div><div class="ubbcode-body"> I have handled the RRAs and IMHO, don't plan on trying to use the end of that tube as a stock.</div></div>

To my understanding you can aftermarket a tactical stock as a replacement (or it slides over?) not sure how it works. Or am I wrong? I hope I can anyway o_O

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gstaylorg</div><div class="ubbcode-body"> BTW: also plan on getting some really good ear protection and annoying people next to you at the range, they are LOUD!</div></div>

AWC Silencer, yo. Or, just loud as shit, all good. Haha. As for the other people at the range, the range is in my backyard, so no worries.

Thanks for the info bro. I wouldn't be setting it up with a scope or bipod, so I doubt I'll be seeing results as good as yours.
 
#18
Re: Thinking of buying a Rock River 10.5" .223...

all that barrel length really does is increase or decrease velocity. I had a bushmaster carbon 15 pistol which chrono 2400 fps with 55 fmj bt. They grouped fine all with in 1 moa. I would rather go with a bull pup design than limit my velocity.
 
#19
Re: Thinking of buying a Rock River 10.5" .223...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PatrickChewing</div><div class="ubbcode-body">I have had several Rock River guns/parts. I have always been pleased with their performance. I do not think that you will regret purchasing from them. </div></div>

Yeah I've had a few people say they've been really happy with their RRA. Pretty stoked to pick mine up soon.
smile.gif
 
#20
Re: Thinking of buying a Rock River 10.5" .223...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: frankythefly</div><div class="ubbcode-body">all that barrel length really does is increase or decrease velocity. I had a bushmaster carbon 15 pistol which chrono 2400 fps with 55 fmj bt. They grouped fine all with in 1 moa. I would rather go with a bull pup design than limit my velocity. </div></div>

Yeah I know, but my reasoning was that slower velocity = less maximum range, more influence of wind and other enviromental issues with the slower speed and light bullet, and the bullet starting to tumble at range.
 
#24
Re: Thinking of buying a Rock River 10.5" .223...

We have a 10.5 inch F.A. RRA as an agency demo gun and have had no problems with it. It went about 35k before we had to have it re-barreled. Its set up as an entry weapon with a G5 can, UBR stock, and an EO tech XPS. The set up is very balanced compared to the 7 inch or 14.5 inch guns.
 
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