Beginning to order stuff

[Keep The Change]

I've placed an order with AA for a bolt. They didn't give me an exact time frame but approximately a month is what they told me.

I contacted Brux Barrels and they are about 16 weeks I believe. So I think I'll order a 22"-24" barrel and get the bolt to them when I get it. It should be there in plenty enough time.

Thoughts on 22 vs. 24. This will probably not see any hunting, so weight is not an issue. Is the performance between them pretty negligible?

Also is a 5/8 x 24 thread acceptable or do you guys go with a bigger OD?

[LRRPF52]

The performance between a 20" and a 24" is very minimal, if detectable at all across a large sample of guns when using the same gas system length. If you are looking for performance with no consideration for carrying the stick, I would go with a 24" using an extended gas system length, longer than a Rifle-Length Gas System. The main things you need to do differently for that are to have the barrel profiled so you have the gas block shoulder and journal located more forward, and get an extended length gas tube.

5/8x24 is fine on a bull barrel.

[Keep The Change]

The performance between a 20" and a 24" is very minimal, if detectable at all across a large sample of guns when using the same gas system length. If you are looking for performance with no consideration for carrying the stick, I would go with a 24" using an extended gas system length, longer than a Rifle-Length Gas System. The main things you need to do differently for that are to have the barrel profiled so you have the gas block shoulder and journal located more forward, and get an extended length gas tube.

5/8x24 is fine on a bull barrel.

Thanks a lot LRRPF52. I hadn't really thought about having a longer gas tube. I'll be sure to have that done. I was still wanting to do a .750 gas block. This should be perfectly feasible, right?
I plan on getting it fluted as well.

Are you pretty much limited to contour options for the AR barrels? Suggestions on this front?

[Keep The Change]

I was planning on getting a Syrac adjustable gas block. It's been highly recommended by multiple people. However they only make them up to .750".

I was thinking of getting the barrel at. .875" and then fluting. Is this overkill and is .750 barrel OD just fine for the 6.5 Grendel?

[jroger3]

Here's a little article on the Syrac.
http://www.shootingillustrated.com/index...gas-block/

[Keep The Change]

Thanks JR. Im new to the Syrac thanks for suggesting it.

So since I'm figuring out what to get and am ordering items what trigger are you guys using?
I'll be doing probably all target shooting. I was looking at the Jewell adjustable.

[aclark]

AR Gold is a GREAT trigger, modular 1-piece and SUPER smooth. That being said, I'm trying to be patient and wait for the CMC triggers to come back in stock for my build. If its too much longer though I'm going with the Gold.

[Keep The Change]

Thanks aclark I haven't heard of AR Gold. I was considering CMC though. I like the adjusability of the jewell.
Is the CMC relatively easy to install and/or tune?

[aclark]

CMC is a one piece drop in like the AR gold. Drops right in and then you push the pins it. Don't believe its adjustable but comes from the factory at 3-3.5lbs maybe 3.5-4lbs, don't remember. Supposed to have good lock up time and tight tolerances. Haven't shot one yet, but if its 75% of the AR Gold then its G2G.

http://www.cmctriggers.com/About.html

Funny thing I saw on their site, since they are OOS everywhere right now.

. However, keeping up with high demand has been difficult since introduction. CMC is confident the new production tooling and set up, incorporating the most advanced methods available, will not only yield the highest quality, but will also keep the supply lines full so every AR 15 shooter who places the highest demands on quality, function and reliability, will no longer have extensive lead times for obtaining these innovative trigger groups.

[jroger3]

I have the Geisselle SSA-E on both of my builds. It's between a match trigger and a battle trigger. All depends on how you like your trigger pull and break and if you are just shooting off a benchrest, bipod or doing some standing shooting.

If you intend to use it as a self defense weapon as well, you don't want a super light trigger while checking out things going bump in the night.

Zediker's book has a nice review of various triggers.

[Keep The Change]

CMC is a one piece drop in like the AR gold. Drops right in and then you push the pins it. Don't believe its adjustable but comes from the factory at 3-3.5lbs maybe 3.5-4lbs, don't remember. Supposed to have good lock up time and tight tolerances. Haven't shot one yet, but if its 75% of the AR Gold then its G2G.

http://www.cmctriggers.com/About.html

Funny thing I saw on their site, since they are OOS everywhere right now.

You know I came across CMC awhile back and made a note to remember them for my next build. I remembered they were a Texas company and would consider the local company for my next trigger. Then I forgot their name till now. Thanks again Clark. I'm liking their setup. Being that you can't tinker with it, I won't have to deal with that because that would be all new to me.

I wish it was a little bit lighter on the pull though. This will be target, bench, bipod gun and will need all the help I can get on the trigger. But if it is really crisp the 3 lb pull might be just fine.

I've also started looking at the AR Gold. That looks interesting as well.

[Keep The Change]

I have the Geisselle SSA-E on both of my builds. It's between a match trigger and a battle trigger. All depends on how you like your trigger pull and break and if you are just shooting off a benchrest, bipod or doing some standing shooting.

If you intend to use it as a self defense weapon as well, you don't want a super light trigger while checking out things going bump in the night.

Zediker's book has a nice review of various triggers.

Thanks JR, my brother has a Geisselle in his gun and really likes it. Mine will be a target gun and not for HD. So I will be looking for a very light and crisp trigger. Thanks for the Zediker's suggestion. I'll have to take a look at that.

[Keep The Change]

BTW guys, I had a question about the O.D. of my barrel. Since the Syrac Adjustable gas block has a lot of high praise from users, it only comes in .750 ID. Is a .750 OD barrel acceptable for the 6.5 Grendel?

My thought was to order a .875 and have it fluted. If I drop down to a .750 OD barrel, will fluting a cut rifled barrel still be possible or is that getting a little too thin?
Thanks guys.

[leopard6.5]

Keep The Change: I have four or five barrels( sorry but they are not all in one location or I would get an accurate count) that are all .750 in the gas block area and they all shoot great.

Two are Les Baer's from when he was doing the SAAMI spec. chamber and the rest are Satern's which are fully fluted( under the handguard and between the gas block area and the muzzle).

If you want the actual spec.s of the Satern barrels you might want to check their website.

Good Luck and great shooting.

Lee

[LRRPF52]

Any of the quality manufacturers will have a good gas block, like JP, PRI, Noveske, Syrac, and so forth. If you want to flute, have it done by the actual barrel-maker before it's chambered.

.750" is the smallest I would go for a gun that's going to ride the bench. Normally I use a .936" gas block journal on my heavy rifles. For anything medium-light, I use .750", and for anything super light, .625".

[Keep The Change]

Thanks Leopard. I'll look at Satern's site for some specs. Now is the .750 only at the gas block and something larger between the gas block and the receiver extension?

[Keep The Change]

Any of the quality manufacturers will have a good gas block, like JP, PRI, Noveske, Syrac, and so forth. If you want to flute, have it done by the actual barrel-maker before it's chambered.

.750" is the smallest I would go for a gun that's going to ride the bench. Normally I use a .936" gas block journal on my heavy rifles. For anything medium-light, I use .750", and for anything super light, .625".

That was sort of what I was thinking LRRPF52. I'm going with a Brux Barrel and they flute their barrels before it is rifled. They say it is the first thing done. Now I'm getting the impression that my barrel would 0.875 OD under the hand guard and through to the gas block. Thanks for the tip and info.

[Keep The Change]

Currently on order:
Brux Barrel 24",6.5 Grendel , extended rifle length gas port, OD is 0.875", interrupted fluting, bead blasted, 5/8 x 24 threaded muzzle.

Did I miss anything? This thing will shoot 10 times better than me, but at least I'll know that the barrel is not the problem.

I have an AA bolt on order, I hope it gets to me before Brux needs it.

I'm researching triggers now. I've had some suggestions from a couple here and from friends and there are certain aspects about each that I really like. I think I want a really light pull with a super crisp break. I'm going to need a lot of help at my current skill level. The trigger and barrel will be critical for me as a newby distance shooter.

[LRRPF52]

When you say "extended rifle length gas port", what length is that exactly in inches from the breech?

A standard rifle-length gas tube is 15.125" just for reference. I personally feel the rifle-length gas system is a bit short for a 24" barrel, and if I were building one, I would lean to an extended-length gas system. These are very rare, and I have only seen them on custom guns such as this:

[Keep The Change]

LRRPF52,
Last Thursday, I ordered from Brux a 22" barrel with a rifle length gas system. After watching some 24" grendel videos and thinking about how I plan on using it, I figured I might as well go for the 24" and asked for an extended gas system. The guy on the phone, which I think was their sales guy said he thought it was about 2" past the rifle length. If the AR in the picture has a 15" guard then 2" past the rifle length looks about what is on that rifle. I didn't get a measurement from the breach from them. I just figured, they are the barrel guys and have a set length for their extended gas system.

I believe in an earlier post you suggested an extended length gas system with a 24", and I took this into consideration. My thought was that if a midlength on a carbine is a good combination in terms of being a little easier on the reciprocating mass and having less pressures at the carrier, then I would think it holds true for my scenario.

Anyway I would enjoy a discussion on the benefits of doing this or any issues with it as well concerning my decision on this barrel. This is uncharted territory for me.

I'll try to find out what that distance is tomorrow from Brux though.
-JP