Building a 300 blackout

[44Runner]

Originally Posted by chumly2071

Anyone here have any experience with the Model 1 or CMMG uppers or parts thereof? I'm thinking seriously about this as my next build as well. Any other sources to consider for a budget build? Palmetto doesn't offer the caliber yet, but I would probably use another one of their lower parts kits to finish out my lower.

I would advise to stay away from Model 1. Had my worst buying experience ever from those clowns. They are liars that put out a substandard product.

[chumly2071]

Discovered that DSA is now offering two 16" uppers (Less BCG).

one in SS for $335


and one in 4150 blacked for $320

Appears they just announced their availability in the last couple days.

[YellowIH]

Originally Posted by rsilvers

I am Director of R&D for AAC. If you want something high-end like AAC, but don't want an AAC, I would get a Noveske. If you want less expensive, then I am not sure. There is probably good stuff, but I don't know enough about it to sort it out.

well......HELLO and welcome to OSR.....I think we have arrived...

Originally Posted by rsilvers

No, 300 BLK at 300 meters has 16.7% more energy than Lapua 7.62x39mm ammo. That means it is just a good way to get 30 round capacity of 30 caliber ammo in a normal AR with a normal bolt and normal magazines. All it needs is a barrel change.

So if you would not suppress an AK, then there is no reason to suppress a BLK.

$12.99 MSRP a box.

Crimped.

Waterproof primer.

Double-struck (NATO hardness) brass.

Open Tip match (nose struck closed).

Annealed with visible mark for verification.

About a 0.300 BC at 2250 fps.

Full-out-awesome, and I am very proud of the ammunition engineers for taking the dream-approach on this.

There will be no shortage of this. If the market wants a million rounds a month, it will get it. It has its own machines.

I suppress my AK and it makes a huge difference. Its almost my favorite thing to shoot suppressed.

Originally Posted by jstarnes

So... a barrel is all that is needed to swap a "normal" AR 15 into 300 blackout?

I'm getting interested now.....

Originally Posted by Drunk tank

yep!

If this thing is going to be popular enough that UMC is going to start cranking out rounds for it.... I do believe I MIGHT just have to build me one of these!

Originally Posted by rsilvers

It will be popular based on price alone. Reformed one-fired 223 brass is 10 cents each:

http://www.allweatherarms.com/1000-P...0-Blackout.htm

And new Remington primed brass is 25 cents each at Midway.

And while some bullets are more optimal than others, you can shoot any 30 cal bullet you have.

Originally Posted by freerider5.0

Both are GTG. Come on over to 300blktalk.com and read

**sign** something else to build......

www.300blktalk.com

[Ben Segrest]

Originally Posted by chumly2071

Discovered that DSA is now offering two 16" uppers (Less BCG).

one in SS for $335


and one in 4150 blacked for $320

Appears they just announced their availability in the last couple days.

No BCG with those two.

[chumly2071]

Originally Posted by Ben Segrest

No BCG with those two.

Yep, as I noted in my post.

[Norm]

IMO, the 6.8 has much better ballistics, just a bit smaller hole A 6.8 will push a 115gr at ~2600 fps, and 85gr at ~3000 fps, not far off a .243 . I guess the suppressed subsonic 175gr load might be interesting to some, just don't see the 115 gr load as anything exciting ... meh

[YellowIH]

Pics anyone?

[wheelerfreak]

Originally Posted by Norm

IMO, the 6.8 has much better ballistics, just a bit smaller hole A 6.8 will push a 115gr at ~2600 fps, and 85gr at ~3000 fps, not far off a .243 . I guess the suppressed subsonic 175gr load might be interesting to some, just don't see the 115 gr load as anything exciting ... meh

Can you run a 6.8 with a standard AR BCG, lower and mags? I like the idea of the 300 blackout because I can just buy an upper and then use the rest of my AR mags and BCG. Seems to save a little money while being able to use your existing lower and mags. I'm waiting for more info before I do it though.


Edit: I just did some reading and you have to use a new bolt, barrel, and mags for the 6.8.

[Hutch179]

What about the PWS upper? I'd like to hear any opinions on the PWS stuff.
http://primaryweapons.com/store/pc/v...&idcategory=11

[Norm]

Originally Posted by wheelerfreak

Can you run a 6.8 with a standard AR BCG, lower and mags? I like the idea of the 300 blackout because I can just buy an upper and then use the rest of my AR mags and BCG. Seems to save a little money while being able to use your existing lower and mags. I'm waiting for more info before I do it though.


Edit: I just did some reading and you have to use a new bolt, barrel, and mags for the 6.8.

You just need a bolt and barrel not the whole BCG for 6.8, and yes you have to modify the mags.

[freerider5.0]

My doe I took with my 300blk

[Doc Holiday13]

Originally Posted by freerider5.0

My doe I took with my 300blk

Where is the suppressor?? Having that round without a suppressor is pointless

[freerider5.0]

Originally Posted by Doc Holiday13

Where is the suppressor?? Having that round without a suppressor is pointless

Can't hunt game animal in Texas with a suppressor. And 300blk supersonic has plenty of knock down power. That round was a 110g v-max over 18 grains of h110.

[YellowIH]

Originally Posted by freerider5.0

Can't hunt game animal in Texas with a suppressor. And 300blk supersonic has plenty of knock down power. That round was a 110g v-max over 18 grains of h110.

tell us more about your setup. The 300 site is pretty slow...

[1RUSTYRIG]

Subscribed....

[Texas97]

Originally Posted by freerider5.0

My doe I took with my 300blk

did that doe still have milk in its mouth? good night, thats a tiny frickin deer!!

[87manche]

Originally Posted by Texas97

did that doe still have milk in its mouth? good night, thats a tiny frickin deer!!

if Texas has North Carolina sized deer that's as big as they get.

First time I was down there and saw deer I was like WTF? I've seen bigger dogs.

[freerider5.0]

Originally Posted by YellowIH

tell us more about your setup. The 300 site is pretty slow...

Delta Company Arms 16 inch barrel. Slightly oversized gas port(carbine gas length). The rest of the rifle is built from the cheaper than dirt catalog

Originally Posted by Texas97

did that doe still have milk in its mouth? good night, thats a tiny frickin deer!!

She was 100 pounds, dressed out to 80. The does do get a little bigger, but we have 7 more management tags to fill.

Originally Posted by 87manche

if Texas has North Carolina sized deer that's as big as they get.

First time I was down there and saw deer I was like WTF? I've seen bigger dogs.

My dog weighs more than that doe i shot

[Texas97]

Originally Posted by freerider5.0

She was 100 pounds, dressed out to 80. The does do get a little bigger, but we have 7 more management tags to fill.


My dog weighs more than that doe i shot

Doe and deer weights are way down this year. if i were to guess so far, i would say 10-15% because of the drought. herds numbers are probably down 30- 40%.


hijack off: would be sweet to get a barrel with the gas block and build around that and the Rainier Arms MUR upper reciever. Do you need to headspace the barrel or is this round just like the 223/556 where no HS is required?

[freerider5.0]

Originally Posted by Texas97

Doe and deer weights are way down this year. if i were to guess so far, i would say 10-15% because of the drought. herds numbers are probably down 30- 40%.


hijack off: would be sweet to get a barrel with the gas block and build around that and the Rainier Arms MUR upper reciever. Do you need to headspace the barrel or is this round just like the 223/556 where no HS is required?

Yup, same thing, the barrel was keyed. Slid it in your upper and tighten it down

I absolutely love my .300blk. I want to change it up a little, kind of tired of the cheap quad rail clanking around and want to change out the stock to something different.

[chumly2071]

Anyone have any recommendations for loading die sets for the 300blk? I would be using them in a Dillon 650.

[freerider5.0]

This is what i use.
http://www.midwayusa.com/product/655...ngton-fireball

They have these now, but didn't when i was looking for dies.
http://www.midwayusa.com/product/840...ckout-762x35mm

[87manche]

Originally Posted by freerider5.0

Delta Company Arms 16 inch barrel. Slightly oversized gas port(carbine gas length). The rest of the rifle is built from the cheaper than dirt catalog


She was 100 pounds, dressed out to 80. The does do get a little bigger, but we have 7 more management tags to fill.


My dog weighs more than that doe i shot

decent sized doe in my area (norhtern Ohio) is 150ish.

I've seen some pretty big bucks lately. A friend took a buck today that he claims dressed out @ 200 lbs. I haven't seen the pictures yet.

we grow them big up here

http://www.cantonrep.com/newsnow/x23...s-state-record

back to your scheduled gun talk.

[rsilvers]

Originally Posted by Doc Holiday13

Where is the suppressor?? Having that round without a suppressor is pointless

No one says that about the 7.62x39 or 30-30. 300 AAC BLACKOUT is basically a way to get those kinds of ballistics from an AR while keeping 30 round capacity in normal magazines, and using the normal bolt. And yes, I know people have 7.62x39mm somewhat working in an AR, but it breaks bolts, does not have reliable ignition on some primers, does not work well in the magazines, etc.

http://www.gunblast.com/300Blackout.htm

Gunblast.com - 300 AAC Blackout AR-15 Upper from Advanced Armament Corporation - YouTube

[redpitbull44]

Originally Posted by rsilvers

$12.99 MSRP a box.
There will be no shortage of this. If the market wants a million rounds a month, it will get it. It has its own machines.

That price point is too high. I can get 7.62x39 for $5 per 20 (average) all day long. Same thing with 5.56 and 5.45. Almost triple that is not worth it, just so I can use standard AR bolts and mags. If you want it to be fully competitive, your price point needs to be in the sub $7 range. That's not just me talking either. Many people I've talked to that shoot one of the above have said the same thing- "Yeah, I'd love to have an AR in .300 BLK but the ammo is just so much more expensive".