View Full Version : OLL build ideas- want something bigger than .223

01-28-2009, 6:41 AM
I just purchased two stripped CMMG OLL's and am undecided about what to make for the second build. My first build is on order for a MonsterMan styled version with a 16 inch Del-ton rifle kit. I also threw in a Knights RAS free float.

I know for the second build I want to build a bullet button configuration. I figure if I'm locked into keeping a 10 round magazine as long as I am in CA, I should get the best 10 rounds I possibly can. With that in mind I am looking at 6.8 and 7.62X39 configurations. Anyone have any ideas, positive and negative reviews about these types of setups?

01-28-2009, 6:55 AM
i'm in the same boat - same lower - did you purchase it in duarte? i think i got 2 of the last 4

my cousin and i were discussing the benefits of each config. i have really been wanting the 6.8, but 7.62x39 might be a better choice

7.62x39 is cheaper, more available good if you have another with the same round; supposedly, it can be considerably more accurate out of an AR than SKS or AK

6.8 is supposed to be very accurate with good stopping power (home defence is always my first priority)

if this build is for plinking stuff, go with the 7.62;
however, my only experience is with the 7.62 and this is just my .02

01-28-2009, 7:02 AM
Over on ar15.com there is an entire thread discussing the 6.8 SPC


01-28-2009, 7:03 AM
6.8 ammo is going to be a little more expensive to shoot than 5.56 or 7.62x39. I believe (not sure) that 6.8 uses the same mags as 5.56 but you'll probably have to get different mags for the 7.62x39.

If you really want more bang for that lower, have you thought about a .510DTC or .416 Barrett upper?

shootin' nuke
01-28-2009, 8:28 AM
I've got a 6.8 upper in the works. Love the concept of the round. A little digging showed that it is everything it claims to be.
If you really want to go big, there are plenty of options out there. Think 450 Bushmaster, 458 SOCOM:devil2:

01-28-2009, 8:43 AM
7.62x36 is cheaper and easier to find.

01-28-2009, 8:55 AM
Personally between the two I would go 7.62x39 over the 6.8 due to ammo availability.
However if price of ammo or having to reload is not an issue to you I would pick the 6.5Grendel over either of them. It looses a small amount of close range energy, but catches up and passes either of them in retained energy quickly. And lets face it 99.9% of all the shots any of us will ever take will be on paper. The Grendels better ballistics will make it more pleasurable to shoot at the range, yet still prove more than adequate as a defensive round.

01-28-2009, 8:59 AM
6.5 grendel all the way .....

Army GI
01-28-2009, 9:06 AM
Learn how to reload and go with the 6.8mm. You get higher quality ammo AND a round designed specifically for the AR15. The 7.62 Soviet, while a neat round, should stick with the AK

I'm serious. Go to MidwayUSA.com, buy a Lee hand press for $30 or a Breech lock single stage press for $45. A set of dies, and components and you are in business. Remember, when you reload, the brass is free after the first time.

Hornady V-Max $23.45 per 100 http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=133687
Reminton 6.8mm Brass $40.99 per 100 (can be reloaded 5 times or more) http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=735037
Lee hand press $27.99 http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=410804

01-28-2009, 2:47 PM
If you want big, put a .50cal upper on your lower!

01-28-2009, 3:06 PM
.458 socom...get some!!!!

01-28-2009, 8:03 PM
Why are you using the Monsterman grip opposed to the BulletButton???

01-28-2009, 9:07 PM
I'd go 6.8, but that's just me

01-28-2009, 9:08 PM
.50 Beowulf

01-28-2009, 9:23 PM

01-28-2009, 11:44 PM
5.45x39. Upper is about the same as 5.56 and 7.62x39. Ammo is WAY cheaper!




01-29-2009, 7:28 AM
There is a lot of support for 6.8, more products every day.

I have two 6.8 rifles, one 16" lightweight I built as a hunting rifle and one 18" SPRish rifle.
They have become my favorites.
Reload for inexpensive practice.
Get a 1/11 barrel with SPCII/DMR chamber and shoot SSA combat loads for defense.

For a cheap blaster 7.62x39 is a good upgrade. But I still prefer the 6.8.