help ordering custom 308 ar barrel

[Justintoxicated]

I was going to order a custom barrel from satern for a 308 ar. I'm thinking about getting a 24 " heavy profile but i was wanting to use a syrac adjustable gas block. However they only seem to be available in .750. I'm worried about the barrel being too thin after the gas block. Also thinking about going rifle length gas plus 2 for easier access to the gas block under an extended length hand guard and to match the jp light weight bolt carrier. Our maybe i should go gas piston?

[joelogic]

JP makes a .936" adjustable gas block. Adjustable gas blocks are set it and forget it unless you are using a suppressor.

[Justintoxicated]

Yea but i still need to be able to adjust it with the extended float tube right? How hard would it be to find a rifle length plus 2 gas tube? Or should i just go with a piston setup? then again that would probably not work with my jp bcg right?

Also thinking about getting a target crown instead of threading?

[joelogic]

Take the tube off or maybe you can get to the screw through a slot or hole.

Why do you want an adjustable setup? How does a piston upper fit in?

JP's bcg is DI.

[BKTJ]

I have had 2 24" DPMS .308 uppers and they are only good for bench work. They are heavy and unwieldy. The 20" is a much handier choice and gives very little to velocity. The .750 you are looking at seems too thin, most I have seen are .936. I am using 2 of the JP blocks and they work as advertised.
Try JSE Surplus for a DPMS barrel. Probably hard to get for a while, but a good value. Next would be Midway, a bit higher.

[Justintoxicated]

Thanks guys, the jp bcg is extra light weight and it is recommended to go with an adjustable block but I'm tempted to go a different route and go with a gas poison setup. I'm looking to order this barrel from satern, don't want a regular dpms one. I have a 20" ar and yep it's heavy...but i want this one to be more accurate for longer range...probably just a bench gun. planning to get a decent sized scope for it too. Still not sure if i should get a threaded barrel, leaning towards a target crown instead.

[ar15barrels]

How hard would it be to find a rifle length plus 2 gas tube?

I have rifle plus 2" gas tubes in stock.
Stay with direct impingement if you are looking for better accuracy.

[SoCalXD]

If you reload, you should consider 6.5 Creedmore, if you really want a longer range on that platform (heck, even if you don't reload... price is same/same for factory match ammo). I assume you'll be shooting at the 890 yard gong at Pala? I haven't been having much luck hitting that with my 18" barrel in 308...so far!

[Justintoxicated]

If you reload, you should consider 6.5 Creedmore, if you really want a longer range on that platform (heck, even if you don't reload... price is same/same for factory match ammo). I assume you'll be shooting at the 890 yard gong at Pala? I haven't been having much luck hitting that with my 18" barrel in 308...so far!

I do re-load, and I am hoping to get good enough to hit up Pala. So this round sounds interesting. Have any links that demonstrate it's accuracy advantages? All the ones I find just seem to lead me to slightly increased accuracy, at the expense of shorter barrel life?

Also, I'm trying to figure out what parts I would need to change. I already ordered the JP light weight BCG, and a couple Magazines. But no barrel yet.

What all would I need to do to make the switch in a 308 upper/lower matched set?

The brass seems kinda expensive, similar to 6.5 grendel.

I have rifle plus 2" gas tubes in stock.
Stay with direct impingement if you are looking for better accuracy.

Nice, would going rifle +2 be a good idea then?

Yea I thought I read direct impingement was slightly more accurate, but wasn't sure.

[ar15barrels]

Nice, would going rifle +2 be a good idea then?

It would make more sense to go with a 26" barrel on a 308 and then go with +2 gas system.
There is probably not as much advantage on a 24" 308.

However, with a 6.5, the +2 would help on a 24" barrel.
The 6.5 would be my recommendation of all the things being talked about in this thread so far...

[Justintoxicated]

Does it require a different bolt?

[Justintoxicated]

So many decisions...what about a .260 Remington? Would that be better than a creedmore?

[ar15barrels]

Does it require a different bolt?

No.

So many decisions...what about a .260 Remington? Would that be better than a creedmore?

The 260 ends up being too long to fit properly into the magazine length limitations of the LR308 platform.
The 6.5 creedmore is basically just a 260 that has the case about 1/8" shorter.
This allows the long VLD bullets to be loaded to a length that is magazine compatible.

[Justintoxicated]

No.



The 260 ends up being too long to fit properly into the magazine length limitations of the LR308 platform.
The 6.5 creedmore is basically just a 260 that has the case about 1/8" shorter.
This allows the long VLD bullets to be loaded to a length that is magazine compatible.

How did they make this? http://dpmsinc.com/20-260-Barrel-Assembly_p_172.html ?

So 6.5 will be a bit more accurate but, I hear the barrel will only be good for 2k rounds?

[bigbully]

FYI: JP is no longer taking barrel orders. I was looking for one too and now I'm just frustrated.