SFs Don't Trust 5.56, Want 6.8mm Uppers ASAP

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Travis McGee

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I was just at the SHOT Show, and met some very interesting folks. The most interesting was Sgt. "Name Withheld", of the 5th SFG. He is the chief sniper for the SF's middle east QRF, (which has gone through several name changes lately). N.W. has done 4 tours in several ME countries since 9-11, and knows first hand where of he speaks.

He personally carries an SR-25 in 7.62. This is sort of like an AR-10 with a SIR-type quad rail mount forward. It sports a big (looks like) 8X15 or so Leupold on top. The night scope mounts forward of the day scope on the rail when needed. A fairly bulky IR laser/illuminator is on the right rail. A Harris bipod is forward. A pistol grip is behind the bipod. (He showed us pictures, that's how I saw all this stuff.)

I met him because he was at the SOCOM sniper competition last week, and placed well (against bolt guns) with his combat-proven SR-25. The folks who beat him had the product of the booth I was strap-hanging in on the butts of their rifles, and he wanted one. That's how I met him. He was out at SHOT looking for team gear. (Kasey Beltz of Accu-Shot liked my book enough that he invited me to sell my books out of his booth. Was I lucky or what? Thanks Kasey!)

[Accu-Shot is an up-down mono-pod that attaches to the standard swivel mount on the back of most rifles. The winners at the SOCOM shoot had them, and N.W. wants them for his QRF company's snipers, that's how we met. We had everybody from the CIA to the IDF to the USSS to the SFs in our booth buying them, I kid you not.]

*****************

Anyhoooo.... Getting to the main point. N.W.'s SF company has racked up beoucoups missions of the CQB variety, taking down structures from the outside, and killing all the bad guys inside. He moves close behind the entry team, he is not a distant stand-off kind of sniper. He often ends up using his .308 SR-25 for CQB, helping to secure buildings "in under 2 minutes." (He uses the flipped-up lens caps of his big scope as his "battle sights" for inside work. They have special markings on them.)

He goes in right behind the entry guys, because he says it's very common that as a structure is secured, they will take rifle fire from other buildings several hundred yards away. The M-4 guys can't do much to suppress that fire, but his SR-25 quickly puts a stop to it, firing from the newly taken building.

In fact, he says that with the IR illuminator, his spotter can see the "trace" of his bullets. The boat tail end of a Sierra Match King is shiny brass, and it reflects back the IR illumination, and is seen in the NODs as a clear green light. Cool huh?!

(BTW, he wants the oddball extra-tall Accu-Shot monopod, because they usually fire from flat roofs, from behind a low curb-like parapet. They use the Harris bipod fully extended to see over this typical parapet, while using it for cover, firing at other buildings.)


Now, on to the main point: he is adamant that 5.56 out of an M-4 is not an adequate man-stopping round for their purposes. He says that he cannot count the times a bad guy has been stitched 3-4-5 times across the chest, has crumpled down, been bypassed, and then recovered and fired again at the SFs! They DO NOT TRUST the 5.56 to kill a man or put him down definitively in a fast-paced keep-moving CQB environment. N.W. says "308 kills 'em, 556 wounds 'em." He says the current 556 out of an M-4 makes "icepick wounds."

At this point, his SF QRF company is attempting to ad-hoc and piecemeal cobble together a full loadout of 6.8mm uppers. He laughs about begging for more 6.8mm uppers to "test & evaluate," which is in fact code for putting them to immediate use in combat.

Another visitor to the booth at another time was an older gentleman from Crane Indiana, a govt. small arms ordnance type. He says the Army is NOT putting in any serious quantity orders for 6.8mm uppers. He says the SFs are doing this all on their own, begging for scraps and odds and ends. This confirms what K.E. says about begging for "T&E" 6.8mm uppers.

Apparently the Army doesn't want to hear what the SF guys think about the 5.56. They use it frequently in CQB, and have NO faith in it. Not when you and the bad guy are in the same room or hall or stairwell. The 5.56 might suit "Big Army" when the enemy is not so close, but at room distance in extremely fast paced ops, when you must shoot fast and move on, it's not working, according to N.W.

These SFs want the 6.8s even with their greatly reduced mag capacity, a sign of their strong desire to dump the 5.56mm. The ordnance guy from Crane (N.W. and him were never at the booth at the same time) pointed out that the 6.8 may not feed reliably from a 5.56 mag. The double stack mag is designed to work tightly packed with rounds touching tops and bottoms. Spaced out in a mag, half way between double and single stacked, the rounds are pushed hard outward, causing binding. That was a point the ordnance man made, that N.W. didn't mention.

Sorry for going on and on, but I thought you guys would appreciate hearing this story right from the mouth of an SF master sniper. N.W. has done four deployments in the ME since 9-11 going back to pre-Kabul, and I have 100% faith in his honesty.

snakelogo.jpg
 
Travis, thanks for bringing the voice of BTDT to the Net. The information density at THR is already much higher than at most places; you make it better.

It sounds like the dimensions of 6.8 uppers and mags are identical to those of 5.56; correct? I'd assumed that mag wells and mags were different — wider than the originals. This sounds like they're 5.56 mags with different feed lips. Are any problems foreseen with ammo supply and parts, or does buying rifles for "T&E" just mean that they have to buy spare parts and a whole bunch of ammo at the same time?
 
This is the best information I have that I can publish.

6.8SPC uppers will drop in to your regular AR15 lowers. The external mag width is the same, but I am guessing that "proper" 6.8 mags will have wider internal dimentions (think about the longitudinal slots on the outside), a different follower, and different feed lips. Pictures have been posted on Lightfighter.com of somebody trying to jam 6.8SPM rounds into factory AR, G36, and Sig 550 mags. The results were not encouraging for using your cache of old AR15 mags. Clearly different mag bodies are needed, at least.

One can assume that a normal AR15 upper receiver is used; a normal bolt carrier is used; and normal handguards can be used. The barrel is different (obviously) and the bolt (itself) it different for the larger case head. The caliber is .277" - identical to .270WIN, so until the 115gr OTM & FMJ bullets used in the factory loads are available, we can make do with 110gr VMAX's.

Brass and loaded ammo are shown as "Coming Soon" at Midway-USA.

Note that if you've got an LMT MRP upper (monolithic upper rec & handguards, with a "quick detach" barrel), you could switch it from 5.56 to 6.8 with only a barrel and bolt change -- once they become available.

-z
 
Very interesting, Travis, thanks for posting it.

Of course, if the USA adopts the XM8 they'll need all-new magazines anyway ;)

Tony Williams: Military gun and ammunition website and discussion
forum
 
I'm not trying to pretend to be an expert on this subject. I was just lucky enough to be in a position at the SHOT Show to hear what a real-deal SF sniper had to say, and relay it to you all. Most of your questions, I can't answer in any profound way. But I sure found what he had to say to be interesting, and worth posting.

Matt
 
For counter-sniper work at 400yds, your buddy might be best served with sticking to .308 and 175gr SMKs.

(and getting an EOTech put on top of his scope, A.R.M.S makes a great mount for such a purpose, if you have any contact information for him, I can forward you the part numbers. I'm a big fan of our guys having the absolute best ???? they possibly can. I even help build some of it. (not small-arms related. Thermal imagers for UAVs.))

I also don't see how his expierence with .223 our of an M4 at 400yds is a condemnation of "Close Quarters Battle" with the same cartridge?

Not to dismiss his concerns, but the SF loading of Mk 262 Mod 1 loading of 77gr match .223 ammo is posting amazing ballistics testing results. 6.8 exceeds it a twinge, but not enough for me to stand up and yell (from what I have seen of the publically released data at this juncture.)


All the above said, I'm not put in harm's way behind this gear every day. My hat is off to these guys who do, but they do not nessicarily make them experts in this scientific field all the same.
 
Not to dismiss his concerns, but the SF loading of Mk 262 Mod 1 loading of 77gr match .223 ammo is posting amazing ballistics testing results. 6.8 exceeds it a twinge, but not enough for me to stand up and yell (from what I have seen of the publically released data at this juncture.)

The ballistics may be good but the practical terminal effect seems to be more iffy. There was one reported incident in which an Iraqi killed two US soldiers AFTER receiving seven well-placed body hits with the Mk 262.

Tony Williams: Military gun and ammunition website and discussion
forum
 
I think I saw a review in Shotgun News a few months back on the 6.5mm uppers. Accuracy was exceptionally good. Unknown about terminal effects, but sure has to beat M855 round.
 
Can someone post the specs on the 6.8mm ? Standard bullet weights,

velocity, parent case ect. This is a new one to me.
 
Probably not what the SF bubbas want to hear, but they'd be best served in the short term giving all the hadjis "anchor shots", even with 6.8 or 7.62. All it takes is one supposedly dead hadji coming up behind you with an AK. That said, get some, SF Bubbas! S/F...Ken M
 
STEVE M,

Unfortunately, the information about 6.8SPC as it exists on the net, is spread out and incomplete. This thread on TacticalForums has a lot of information. http://64.177.53.248/ubb/Forum78/HTML/000512.html

There's also info on AR15.com and Lightfighter.com

The parent case is .30 Remington. The standard bullet weight is 115gr. The published velocity is 2800. Rumor is that about twenty-five 6.8 cartridges will fit in a 5.56mm 30-round -SIZED magazine (ie, not a 30rd AR mag).

-z
 
That is very interesting commentary.

I have been reloading .223 and have been wondering how effective somthing that small could be at any kind of distance. If most states won't allow it for deer, well...............

Forget about fragmenting rounds, given NATO rules etc.

Of course the military industrial complex and the original good old boy network probably have other ideas like billions for something different far down the road. Would not be good old boy like to improve on an existing thing.

Anyway, I hope our guys get what they need.
 
What do the other snipers have to say?

You know, the ones with the M24 and M40 bolt guns in 7.62 NATO/.308 Win? Are they screaming for a 6.8mm Remington round?

Something from the wayback machine - This 6.8mm super round is basically the old .270-30 Remington wildcat in a new glossy wrapper. The .30 Remington case had been scrutinized for quite some time as the basis for an M16/AR-15 with more terminal punch. :D
 
I like Barrett's ballistic comparison on the glossy add.

But when I last chronographed my 123gr AK loads from a 16.5" Bulgarian SLR-95, they were moving at 2450 fps. Are they comparing that 6.8 SPC to rounds fired from a Krinkov? :confused:
 
It looks like when fired from the same length barrel, the muzzle velocity of 6.8SPC is about what you'd expect from a .308 shooting 150gr loads. The BC's are close, so the trajectory will virtually match .308.

-z
 
Harry Tuttle-I have been told Barrett wants around $2500 just for the upper!! Soldier of Fortune has done feature articles the past 2 months on the 6.8-regardless of how anyone feels about SOF these appear to be well researched articles. Like anything new in this business time will tell if the interest and the proof is there, and if it is, then the law of supply and demand will dictate the choices and pricing of this market. If the 6.8 is indeed effective and viable the mag problems will be worked out.
 
$2500!? $1300!?

Yikes! :eek:

For that kinda money I'd rather just get a .50 Beowulf upper and sling 400gr bullets at 1800 ft/sec

I've seen Beowulf uppers in the $600 range so at $1300 I could get an upper, optics and a case of ammo.
 
I was at the Cabella's in Kearney NB last week

On the wall in the returns/closeouts room was a 50 beowolf AR upper
for $539

at first i thought it was a V-22lr
it had a larger bore
;)

i was tempted but the ammo situation is kinda sketchy in the long term

its prolly still there
 
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