View Full Version : Anyone shoot 6.8 out of AR15? How is it?

05-23-2012, 11:13 PM
I'm looking into another rifle and was wondering if anyone had experience shooting the 6.8 round out of the AR 15 and if it was worth the extra money on ammo. The rounds aren't cheap. Are the results worth it?

05-23-2012, 11:49 PM
I have a 6.8 SPC. If you already have a AR15 lower and want to hunt pigs and deer with an AR15 platform it's worth it. If your into long range target more than hunting in an AR15 platform then look into the 6.5 Grendel. I wouldn't shoot deer past 300 yards with either. Ballisticly the 6.5 Grendel will start to outperform the 6.8 at 300 yards. Neither are cheap to go plinking. Keep in mind that I reload and so I can reduce my cost and maximize loads. If I didn't reload, I would get neither.

05-24-2012, 12:34 AM
Tagged... Been considering the 6.8 or 6.5

05-24-2012, 3:31 AM
Felt recoil much like the 5.56 round.
Similar muzzle velocity
1.4MOA at 300 yards with my hand loads and 3-9 scope off a bipod.
It's nice but rounds are expensive unless you roll your own.
Been shooting the 90gr Speer TNT.
Finding good magazines isn't easy.

05-24-2012, 4:01 AM
I have a 6.8spc and love it. I just picked up a stainless 6.8 11 11" barrel and bolt and am machining a barrel extension muzzle brake out of stainless to weld on to make legal or I might register pistol lower and make an awesome short range hog gun.

05-24-2012, 4:37 AM
40% more energy within 200 yards compared to 5.56 -

Boar/deer/big horn dropper within 300/350 yards...

The new ammo available for the 6.8SPC II narrows the performance gap with the 6.5G considerably -

I chose the 6.8 based on two things:

1) It splits the difference/performance/ammo cost of the .223/5.56 and .308/7.62
2) Its fun to knock down plates other shooters are only "pinging"

05-24-2012, 7:01 AM
I have a 6.8 upper and love it...I do reload for the round so cost is kept down...Silver State Armory has some of the best prices on faqctory ammo... I do want to shoot a pig with it!!!!

If you live in San Diego you are welcome to try it out.

Tony P.

Flintlock Tom
05-24-2012, 8:05 AM
I have a Stag Arms 6.8 upper and it will shoot sub-MOA all day long.
Very happy with it.
Silver State has bulk ammo at about .80 per round.

05-24-2012, 8:19 AM
Read these.http://www.ssarmory.com/success.aspx
They should give you some good input.
My story is 9th from the top with my kid hugging Yogi.
It's not cheaper than 5.56 to shoot so if this is your 1st or your only AR I don't recommend it.
But if you been around and have a extra AR then you will enjoy it.

mark olindale
05-24-2012, 8:38 AM
I have a 6.8 upper that I use for hog hunting. It is great! The only downside to the 6.8 is the cost of the ammo :(

05-24-2012, 8:49 AM
How much does it cost you reloaders to make target rds in 6.8?

05-24-2012, 2:05 PM
I stocked piled in '06 when it was $27 for 100 rem brass, $23 rem primers, $17 for 100 110gn vmax, $16 for 1# benchmark. 27 grain charge, about 7 use on the brass. Comes out to about 29 cent a round.

05-24-2012, 2:59 PM
My math isn't the best so excuse me if I wrong but this is my handloading shopping list recipe.Shipping and taxes not included because I buy from three different sources and prices will vary.

Speer .277 90 GR. TNT 650 peices $136.51
ALLIANT RELODER 7 - 5 LB. $89.40 will do about 1400 rounds
CCI #41 5.56MM MILITARY PRIMERS (1000) $33.00
SSA 6.8 SPC 100 Unprimed Brass Case SM $51.95
So about 82 cents a round with brass or 30 cents a round if you have brass.
Bullets I buy from either Powder valley or Philips Wholesale
Powder and primers from Gunshow or Philips Wholesale
Brass I buy new from SSA or used at the shows when I can find it.
Sometimes I can pickup deals on Hornandy or SSA on various forums.
I didn't mention Remington brass because I don't use it. Just Preference.
Like I said before I do not recomend 6.8 to new shooters or owners of just one AR.
Hope this helps you out.

gun toting monkeyboy
05-24-2012, 4:11 PM
Ok, I have basically moved to the 6.8 for the majority of my hunting. I like it. Reloading it is fairly inexpensive. There was a thread on this last week. So rather than reposting the pictures, I will just put up the link.


If you are trying to decide between the 6.8 and the 6.5, do your research. But also realize that the differences between the two have become more and more minimal over the last 3-4 years. The price and availability of the 6.5 dies, brass and magazines have gotten to the point where you can find them for about the same price and just as easily as the 6.8 supplies. Until Alexander arms gave up on trying to keep it all propriatary, that was not the case. Brass was often nonexistant, or made of unobtainium. The dies used to cost 3-4 times as much as other calibers. On the other hand, since the SPEC II chamber and barrel twist came out for the 6.8 SPC, its performance has skyrocketed. Ballistically, it is on par with the 6.5 out to over 300 yards. It still drops off faster than the 6.5 does after that. But not nearly as much as most of the pundits online would have you believe. They are usually basing their conclusions on ballistics data that is nearly a decade old, from the original 6.8 loading data. That has little to do with today's SPEC II version. In the end, it is up to you. Pick whichever you prefer. I went with the 6.8 back when it was hard and expensive to reload the 6.5. Since I already have it, I see no point in changing. That may not be the situation for somebody just getting into the game though.


05-24-2012, 4:23 PM
Sounds like the 6.8 is very much geared towards hunting. I see more people talk abouts its application for hunting rather than target shooting.

Does anyone have some general ballistic data for long distance target shootes comparing the 5.56, 6.8, and 6.5? I generally shoot my 24" 5.56 target AR out to about 500-600, but I would like to push that farther, or get another cartridge for the AR platform which would give me an edge at those distances.

05-24-2012, 4:43 PM

All BC and weights are in the picture, also gives a good idea of what is available to you if you reload. The 6.8 SPC has come along way with bullet weights ideal for it in the last couple of years.

Ike Arumba
05-24-2012, 6:08 PM
You should find it interesting to go to http://www.ar15performance.com and check out their FAQs and misc info. Relative to the 6.8 SPC II, they have done some adjusting of the leade, and the rifling to reduce pressure, allowing more powder for the same max pressure, allowing a heavier powder charge and getting closer still to the 6.5 Grendel.

(According to them, anyway. I have never tried their products.)

05-25-2012, 12:43 AM
Thanks for all the input. I haven't reloaded rifle rounds but have definitely gone through my dillon RL550 with pistol rounds. I do have a RCBS single stage reloader though. I might have to oil it up again. The 6.8 sounds very potent and I love eating pork.:D

05-25-2012, 1:03 AM
I have several deferent flavors of AR & the 6.8 is my favorite. I too reload to keep the cost of fun down. It's a great compromise between the 5.56 & the 7.62 NATO.
For more in-depth coverage of this caliber go to 68forums.com.

05-25-2012, 10:17 AM
40% more energy within 200 yards compared to 5.56 -

Boar/deer/big horn dropper within 300/350 yards...

The new ammo available for the 6.8SPC II narrows the performance gap with the 6.5G considerably -

I chose the 6.8 based on two things:

1) It splits the difference/performance/ammo cost of the .223/5.56 and .308/7.62
2) Its fun to knock down plates other shooters are only "pinging"

^^^ I've seen Danny doing that (2010 Stone Cobra class/Escondido) and it was very cool.

Makes a bigger boom too. :) That 6.8 is a bad-arse thumpin' machine.

05-25-2012, 4:23 PM
My 3rd build was a 6.8. I just wanted to do something different, but I plan on using it for coyotes.

I've been buying my ammo from PSA, hornady varmint express 100gr is 16.99 a box I think. I've read that a lot of people don't like this ammo, but it shoots great out of my rifle.. MOA @ 100yds. Remington UMC doesn't shoot well at all out of my rifle.

Once I get some more hornady brass saved up I have some H322, and 115 sierra matchkings ready to go!