6.8 SPC Info Link

6.8mm SPC gel shots

Hornady 110 TAP

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Images (and tons of TAP related details including accuracy, velocity and range reports) can be found:

Scroll about 1/2 way down the page...

http://www.ar15.com/forums/topic.html?b=3&f=16&t=283506&page=23
 
... then I turned off my computer and lost the link.

If I can find it again I will post the link I have never seen a better set of tests/write up done.

The link will be saved in your 'history' section. In Internet Explorer, that is a yellow star icon somewhere at the top of the window that will have a menu of every website you visited, sorted by day.
Hope this helps!
 
I see that the 6.8 is now being chambered in the single shot T/C Contender carbines as well yes I have 2 frames and 6 barrels for them with 2 more in 45 Colt coming any day now this may make a nice super light hunting round for my son as he grows up...

Ahhhh... I'm thinking too much now...

I want a 1 - 10 twist rate 6mm X 6.8mm wildcat for both the XCR and my Contender's it would make a fantastic predator/deer cartridge plus I have hundreds of 6mm bullets sitting on a shelf that I am not using.

I would load the .419 BC 90gr Swift Scirroco 11's for hunting deer and 70gr Nosler Ballistic Tips for predators...

Just found a link to it on 6mm Bench Rest they are calling it a 6mm SPC.
 
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After reading about some of the new improved wonder cartridges designed to fit into an AR 15, I found myself most interested in .300 Whisper, 6.8 SPC, and 6.5 Grendel.

.300 Whisper has the BIG advantage of utilising the stock AR magazine and bolt and cases can be formed from readily available .223 brass. .300 W duplicates 7.62X39 Russian ballistics with the 125 gr bullets, and with 220/230 gr bullets, can be a real THUMPER at silhouette, reportedly knocking down the rams with consistency. Even if you don't load the heavy bullets down to sub-sonic speed, and screw on a can for those all important Tacticool/ COVERT OPS, .300 Whisper makes a a lot of sense for a short range carbine type AR. But of course, after 300 yds, the FAT .30 cal bullets don't have a very efficient ballistic co-efficient, so trajectory is pretty steep.

Then there is the 6.5 Grendel ... supposedly better at 1000 yds than a .308 Win??? The downside is that in an AR 15, the 6.5 requires aftermarket mags and bolt face, and ammo here in Canuckistan is basically Unobtainium. Also, I don't get to shoot much at 1000 yds these days .... but if I did, then I'd probably have picked this caliber for my next AR build .... and maybe I still will build myself a long distance AR 15 in 6.5 Grenadier.

Instead, I bought myself a 6.8 SPC RRA LAR-6.8, which fits somewhere in the middle of the three. Again, in an AR 15, the 6.8 SPC requires a special bolt and mag, but thankfully factory ammo is somewhat available up here.

My RRA 6.8 seems accurate enough with the off the shelf Remington 115 gr ammo, but it kicks noticeably harder than an AR 15 in 5.56. Much more testing to do, and eventually some serious hand loading, but till then I have two questions:

1.] anyone know where to get any other brands of factory 6.8 SPC ammo here in Canuckistan?

2.] Canuckistani source for a decent muzzle brake in the rather awkward 5/8" X 24 TPI thread??

thanks
LAZ 1
[;{)
 
You didn't missed a thing, however I have no idea how GIGGiDY manage to read "Ruger Mini14" from what I posted :confused:

There are no argument here that 6.8 SPC is better that a .223 when it comes to taking out into the bush to hunt, my comment is referring to your statement about putting a 6.8 SPC upper on your AR to give you some flexibility. As a restricted firearm .223 AR is more than enough for shooting paper target, switching a 6.8 SPC wouldn't really offer anything more other than higher cost.


I never "read" Mini 14 from what you posted, I brought up the Mini 14. Same as Camp Cook brought up the XCR.

I was simply agreeing with your statement that 6.8SPC in an AR was simply a more expensive paper puncher. Clear as mud?
 
Would be a great deer cartridge in a non-restricted if controlled exp bullets are available!
 
The issue when the 6.8 first came out is that there where only 3 bullets light enough to get the velocities required for it to be a successful deer hunting round now there are about a dozen even a 85gr and 100gr Barnes TSX.

Bullet weights of 130gr and heavier just don't produce enough velocity to use.
 
Unless you`re trying to knock down steel, or meat (people being meat), I see no good reason to go with 6.8 SPC over 5.56. The 6.5 Grendel on the other hand, gives you 1000 yard accuracy, and better than .308 performance. On the down side, up here at least, there`s no factory loaded ammo.
 
Whoo Hooo... found the link...

h ttp://www.weaponevolution.com/forum/showthread.php?p=14319

The gelatin tests are awesome...

And the write up on the different mags...

and this...

EXAMPLES OF MAXIMUM LOADS FROM SSA USING THE BARNES 85 GR TSX:
1:10"/6-Groove/SAAMI Chamber: 2950 FPS.
1:11"/4-Groove/SPCII Chamber: 3003 FPS. This is the Robinson Arms XCR Barrel
1:12"/3-Groove/6.8x43 Chamber or 1:11.25"/5R/6.8x43 Chamber: 3050 FPS.

This round is looking better and better I'm going to have to get an XCR conversion kit as well as I can get a barrel for my Contender.
 
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I will only interject with one comment. . .reply as you may: I handled several 6.8 rifles, including the legendary Barrett (so called) as an actual prototype rifle at my club in Miami Florida (yes, you even can read the magzine article from which the event sprang). I thought then, as I do now, that it is NOTHING more than a hair faster/flatter 7.62 x 39, which TONS of rifles and even ARs are available in as we speak, which HARDLY justifies the price of the Barrett and other models (guns & ammo), when so many other JUST AS ACCURATE AND RECOIL FRIENDLY rifles are available as we speak for a fraction of the price.

It's a no brainer for me. . .a NO vote. GO for the MUCH more affordable 7.62 x 39 in whatever platform IF the choice is the 6.8 SPC!
 
inparidelicto said: The 6.8 SPC is NOTHING more than a hair faster/flatter 7.62 x 39, ... which HARDLY justifies the price of the Barrett and other models (guns & ammo), when so many other JUST AS ACCURATE AND RECOIL FRIENDLY rifles are available for a fraction of the price.... in MUCH more affordable 7.62 x 39

Well, I can't fault your logic ...
and in fact, I would agree with everything [I paraphrased ] that you said ...
but logic isn't everything.

After a few dozen AR 15s in 5.56,
I bought a 6.8 SPC RRA AR just to have something neat and new to play with.
So until DLASK starts producing a Canadian made 7.62X39 AR 15,
with reliable 7.62X39 hicap/pinned 5 rd mags,
which would be eminiently logical AND marketable,
I'll just have to settle for the 6.8 as the next best thing.

I've also got a 10.5" LMT build ...
which again is not "LOGICAL" or all that "Practical",.
But to me it makes sense for what I want it for [ GAMER GUN for shooting lots of paper, fast, up close and personal, at "TAC" matches ].

one man's logic is another man's insanity,

and
YPMMV
[;{)
LAZ 1
 
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