Ar 10 308

[mossy89]

Well guys, I'm not bored of the bushy, but I really want to do another build. I'm wanting to do an ar10 and looking to do a 308. I want long accurate shots and good knock down power. Now, I dony really know whats good and whats not with ar10s and I have read where some ar10 lowers wony hold a 308. Pretty much I'm confused and want some insight from you all. Too, do any of you have a ar10 stripped lower for sale? I don't have to have the best of the best but good quality is always a must. Thanks and hopefully you guys can learn me something.

[BillytheKid]

My brother is currently, slowly, doing an AR 10 build using a CMMG lower.

[Hoot]

...snip...I have read where some ar10 lowers won't hold a 308...snip...

The only thing I can think that they are referring to is the 2.80 inch COL limitation of the magazine. There are a lot of good choices in bullets for the .308, but their length will not allow them to seat in the brass properly and stay under 2.80 COL.

That's why I'm itching to get an RRA LAR-8 Predator HP. The mag well and magazine it uses (FAL) can accommodate COLs 1/2 inch longer than a standard AR10 style magazine. Yeah, that constitutes a proprietary design, but if performance is the driving force behind my purchase, IMHO it's worth it. RRA also offers a .243 and 7mm-08 upper for it, with the promise of more calibers to come. It comes with their popular 2-stage, NM trigger, which is what I use in my current lower. Safe, effective and I've never experienced a bump fire. Unfortunately, I'd have to sell some of my toys to bankroll such a deal.

Hoot

[kottke_35]

"Unfortunately, I'd have to sell some of my toys to bankroll such a deal."

Hoot[/quote]

Thats for sure. They sure are proud of those units. But I do believe that it may be worth it, like you stated they use an FAL magazine so it will accomadate a longer OAL. It would sure be nice to see them add a 338 Federal load to that list of things to come!

B.

[Hoot]

It would sure be nice to see them add a 338 Federal load to that list of things to come!

B.

338 Federal, aaaah....

I see your .338 Federal and raise you a 358 Winchester! Still a .308 parent case.
That or the 6.5 Creedmoor, assuming the name is not licensed.

That whole name licensing thing is a real insult to the advancement of the hobby. Look at all the confusion from the 6.5 Grendel and all the alternately named equivalents.
Olympic had to name their 300 WSSM to 300 OSSM to reduce the risk of being sued by Rick Jamison. Sheesh!

Hoot

[kottke_35]

It would sure be nice to see them add a 338 Federal load to that list of things to come!

B.

338 Federal, aaaah....

I see your .338 Federal and raise you a 358 Winchester! Still a .308 parent case.
That or the 6.5 Creedmoor, assuming the name is not licensed.

That whole name licensing thing is a real insult to the advancement of the hobby. Look at all the confusion from the 6.5 Grendel and all the alternately named equivalents.
Olympic had to name their 300 WSSM to 300 OSSM to reduce the risk of being sued by Rick Jamison. Sheesh!

Hoot

Ah Hoot, you are a wise man. Want to run for president one day?

It would sure be nice to see some of those calibers come out. I believe Federal chose a bad time to introduce their caliber with the magnum mania frenzy going on. And I like the 35 Whelen so....bring on the ol 358 winchester in an AR platform! I know DPMS chambers the 338 federal already. Time will tell what is to come.

Ps., to the OP....sorry for the thread high jack.

B.

[mossy89]

Say if I wanted to go with the 300 ossm/wssm, I found where I can buy ammo, I dont reload or know how to and dont trust myself. But, if I decided to build the ossm on my lower I just bought, what parts for the upper do I need? Id like to make a custom gun, ive seen some sweet barrels and handguards and the 9 yards. Is this possible?

[Hoot]

Say if I wanted to go with the 300 ossm/wssm, I found where I can buy ammo, I dont reload or know how to and dont trust myself. But, if I decided to build the ossm on my lower I just bought, what parts for the upper do I need? Id like to make a custom gun, ive seen some sweet barrels and handguards and the 9 yards. Is this possible?

To the best of my knowledge, you can not buy components for the .300 OSSM. You have to buy an entire upper. Outside of the Olympic manufacturing plant, only Dtech is authorized to make uppers and Mike is contractually committed to not sell discreet components. There are dealers who sell uppers or complete rifles, but not components. I believe it is that way for their .223 WSSM, .243 WSSM and .25 WSSM as well. There are a handful of AR15 and AR10 unique caliber upper manufacturers who do the same thing. You can replace the accoutrements with other manufacturer's parts, but not the BCA or barrel and extension. Speaking of which, the barrel comes with no muzzle threads. I sent mine out to Ross to have him thread it and fit one of his brakes to it. FWIW, that's a caliber that really benefits from a brake. Baby and how!

Hoot

[Stealthshooter]

Dtech also offers the 30/25 WSSM which I believe only has a different shoulder angle than the 300OSSM. It gets him away from the licencing issues of the 300OSSM.

http://www.dtechsuperstore.com/new_wssm.htm

[Hoot]

Dtech also offers the 30/25 WSSM which I believe only has a different shoulder angle than the 300OSSM. It gets him away from the licencing issues of the 300OSSM.

http://www.dtechsuperstore.com/new_wssm.htm

Mike will chamber it either way. Per Olympics spec or his own variation as he has both reamers. We're talking a few degrees difference in the shoulder angle consistent with the original Winchester spec difference between the 243 WSSM and 25 WSSM. I can't say either way, which is the better choice, but if they cost the same price, with the same lead time, I'd go with Mike's because he does phenomenal work. Unfortunately, that's not the case as Mike is not a factory, with their resources. His product line includes some quite impressive spins on the AR15 and AR10 platforms though. His lead times can get as far out as a year when he's busy.

Hoot