Ultra-short 300 blackout's in review NEW UPDATE: Third Article page 3

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[ARCHIVED THREAD] - Ultra-short 300 blackout's in review NEW UPDATE: Third Article page 3 (Page 1 of 3)

Posted: 6/26/2018 6:59:10 PM EDT

I have 3 or 4 300 blackout's inbound between 5" and 6.5". Although not truly apples to apples, I'm going to do as close of a comparison between them as I can. Not apples-to-apples in that one company is sending a barrel, another is sending an upper, a third is sending a complete firearm.

What all would you like to see in a comprehensive review?

I have a chrono, will do velocity testing from each barrel with ammo from the same lot (subs and supers)
Have a nice rifle rest, will shoot groups at 50 & 100 yards, then 6" steel plate at 175 with best glass I have.

What else would you want to see?

Posted: 6/8/2018 2:13:04 PM EDT

[#1]

I have a 6.25" KAK barrel so I would like to see some velocity test. What buffers are you going to run?

Posted: 6/8/2018 2:19:56 PM EDT

[#2]

I'm interested in velocity for Barnes 110gr from a 6.5" barrel.
I'm on the verge of building a slightly longer Rattler-style AR.

Posted: 6/8/2018 2:27:01 PM EDT

[#3]

Quote History

Quoted:
I have a 6.25" KAK barrel so I would like to see some velocity test. What buffers are you going to run?

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Kak is the only manufacturer I haven't heard back from, but the RTB 6" will be mighty close, and if the V7 6.5" is added to the list then a little extrapolation can be done. both others coming are 5"

Pretty sure I have barnes 110's, rem 115's, rem 220's, and one more super and sub load

ETA a couple are coming with buffers, will see what they provide

otherwise, I have a handful of buffers (the usual, standard carbine, H2, H3) will work with them to figure optimal range

Posted: 6/8/2018 2:31:13 PM EDT

[#4]

Quote History

Quoted:
I'm interested in velocity for Barnes 110gr from a 6.5" barrel.
I'm on the verge of building a slightly longer Rattler-style AR.

View Quote

I had a V7 6.5, sent it out (like an idiot). Have an email in to Joel and a good working relationship, will see if I can add the 6.5 to the review

Posted: 6/8/2018 2:42:19 PM EDT

[#5]

I'd like to see some pics of these shorties! I wouldn't mind finding a 6"ish barrel that works with subs and supers preferably with no can, that would be cool

Posted: 6/8/2018 2:49:06 PM EDT

[#6]

Quote History

Quoted:
I'd like to see some pics of these shorties! I wouldn't mind finding a 6"ish barrel that works with subs and supers preferably with no can, that would be cool

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Will do! As soon as I get each, pics start going up on my instagram (rexnanorum). The written review will eventually be up on Loadoutroom.com/author/jens-hammer/ and the videos will go up on youtube (also rexnanorum)

If i find the password to my image hosting site I'll try to drop some into the forum as well

Posted: 6/8/2018 3:05:11 PM EDT

[#7]

Chrono would be very interesting.
Please be careful of your hands and fingers.

Posted: 6/8/2018 3:14:07 PM EDT

[#8]

Quote History

Quoted:
Chrono would be very interesting.
Please be careful of your hands and fingers.

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I'll probably shoot "magwell gangster" style with them until comfortable

Posted: 6/8/2018 4:26:01 PM EDT

[#9]

Are the barrels chrome lined, stainless, nitrade?

Posted: 6/8/2018 4:36:24 PM EDT

[#10]

Tag for interest.

Posted: 6/8/2018 5:12:13 PM EDT

[#11]

Quote History

Quoted:
I'm interested in velocity for Barnes 110gr from a 6.5" barrel.
I'm on the verge of building a slightly longer Rattler-style AR.

View Quote

oooh bufferless I presume?

Posted: 6/8/2018 5:18:55 PM EDT

[#12]

I have a 10.5 and 8.5. Suppressed, seems the 8.5 has much more recoil. Don’t know how you could test that.

Posted: 6/8/2018 9:48:56 PM EDT

[#13]

Quote History

Quoted:
I have a 10.5 and 8.5. Suppressed, seems the 8.5 has much more recoil. Don’t know how you could test that.

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my guess would be it's gassed more causing faster bolt speeds thus feeling like it recoils more. unless it's substantially lighter than the 10.5? a heavier buffer or better yet adjustable gas block would probably help tame it.

Posted: 6/9/2018 9:30:04 AM EDT

[#14]

Quote History

Quoted:
oooh bufferless I presume?

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Well of course....

Posted: 6/14/2018 7:08:28 PM EDT

[#15]

Just got word V7 is in the game, so the list is

V7 6.5”
R2B 6”
SLR 5”
Veritas 5”

No KAK

Posted: 6/15/2018 3:29:15 AM EDT

[#16]

i'm interested in your results also as i'm getting ready to build a short 300blk upper

Posted: 6/15/2018 10:56:04 AM EDT

[#17]

Quote History

Quoted:
Just got word V7 is in the game, so the list is

V7 6.5”
R2B 6”
SLR 5”
Veritas 5”

No KAK

View Quote

I'm looking forward to your review, i'm really interested in the veritas I wanted to buy one but haven't because of the lack of reviews.

Posted: 6/15/2018 4:03:32 PM EDT

[#18]

Quote History

Quoted:
I'm looking forward to your review, i'm really interested in the veritas I wanted to buy one but haven't because of the lack of reviews.

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Quote History

Quoted:

Quoted:
Just got word V7 is in the game, so the list is

V7 6.5”
R2B 6”
SLR 5”
Veritas 5”

No KAK

I'm looking forward to your review, i'm really interested in the veritas I wanted to buy one but haven't because of the lack of reviews.

Correction:

V7 6.5"

Veritas 5" (SLR uses Veritas barrels: The Veritas upper I'm getting has an SLR rail)

Modern Outfitters MC6-SD 6"

RTB 6"

Posted: 6/15/2018 4:06:45 PM EDT

[#19]

Quote History

Quoted:
I'm interested in velocity for Barnes 110gr from a 6.5" barrel.
I'm on the verge of building a slightly longer Rattler-style AR.

View Quote

I have velocities of 110gr Barnes out of a Rattler (5.5") and LVAW (6.75"). Let me see if I can find...

Posted: 6/15/2018 4:48:36 PM EDT

[#20]

Quote History

Quoted:

I have velocities of 110gr Barnes out of a Rattler (5.5") and LVAW (6.75"). Let me see if I can find...

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Also interested... May start an ar15 parts weight database style document to crowdsource velocity data. I know there's some variables between collection sites, methods, temps etc... but close enough for most people to do the rough calculations theyre interested in

Posted: 6/17/2018 4:41:25 PM EDT

[#21]

Also interested in the short 300 with 110 Barnes. I need an ultra compact as short as possible 300 that I can fit in a regular backpack.

Posted: 6/22/2018 11:28:47 PM EDT

[#22]

I have seen reviews of the KAK 6.25 and similar barrels anywhere from 1800-2100 fps with the Barnes 110. That should still give you expansion out to 350-450 yards.

Posted: 6/23/2018 8:50:14 PM EDT

[#23]

V7 and R2B have arrived, waiting on two more then it's game on. will get a couple pictures up on IG (@rexnanorum) and try to figure out my pic hosting passwords.

whats the go to picture host these days for forum use?

Posted: 6/24/2018 10:42:14 AM EDT

[#24]

Quote History

Quoted:
V7 and R2B have arrived, waiting on two more then it's game on. will get a couple pictures up on IG (@rexnanorum) and try to figure out my pic hosting passwords.

whats the go to picture host these days for forum use?

View Quote

Imgur and Flickr for hosting.

Posted: 6/26/2018 2:18:29 PM EDT

[#25]

Quote History

Quoted:

Imgur and Flickr for hosting.

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Thanks

V7

R2B

Posted: 6/26/2018 5:48:41 PM EDT

[#26]

The AAC 51t mount tucked under the forend on the R2B is a placeholder, it actually wont work as it goes back over the shoulder a little, but the R2B gas block is right up against the shoulder. Wont work on the V7 unless I cut the brand new magnesium rail a bit. The SAS Reaper's TOMB mount fits fine on both.

So I'll probably bring tools and hot swap the SAS TOMB mount and use the SAS Reaper for testing. I have the blast diverter for that as well, so I can fire the tucked barrel unsuppressed and not damage anything.

Anyone have a spare tomb mount or two? I can trade you something worthwhile, but no budget to buy one right now

Posted: 6/26/2018 6:59:10 PM EDT

[#27]

Topic Moved

Posted: 6/26/2018 11:46:57 PM EDT

[#28]

Plan to do any shooting suppressed? my 8.5" is very easy on the ears suppressed but I have wondered if a 5" would have more bark

Posted: 6/27/2018 8:21:23 AM EDT

[#29]

Quote History

Quoted:
The AAC 51t mount tucked under the forend on the R2B is a placeholder, it actually wont work as it goes back over the shoulder a little, but the R2B gas block is right up against the shoulder. Wont work on the V7 unless I cut the brand new magnesium rail a bit. The SAS Reaper's TOMB mount fits fine on both.

So I'll probably bring tools and hot swap the SAS TOMB mount and use the SAS Reaper for testing. I have the blast diverter for that as well, so I can fire the tucked barrel unsuppressed and not damage anything.

Anyone have a spare tomb mount or two? I can trade you something worthwhile, but no budget to buy one right now

https://i.imgur.com/CTDiuKR.jpg?1
https://i.imgur.com/b4jyoKl.jpg
https://i.imgur.com/txrLZwe.jpg

View Quote

I actually have a NIB 5/8x24 TOMB that you can borrow. I bought it to put on my dad's M&P 10 so we can run my Reaper on it, but there's no point in doing so until we get an adjustable gas block.

Posted: 6/27/2018 8:48:09 AM EDT

[#30]

how's this coming along? I saw a RTKBA barrel for like $140 and it seemed interesting. My thought is that on an SBR with an LWRC short stock would be tiny and light without needing to fold

curious how these work without a can as I am without at the moment.

Posted: 6/27/2018 1:32:40 PM EDT

[#31]

Quote History

Quoted:
Plan to do any shooting suppressed? my 8.5" is very easy on the ears suppressed but I have wondered if a 5" would have more bark

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Yes I plan on testing subsonic/suppressed conditions. I’ll try a couple sub/unsuppressed, just one or two round each to test last round bolt hold open. Not of the super shorts aren’t made to run sub/unsuppressed, but sometimes you get lucky!

I had a V7 6.5” a while ago, it was definitely a little louder than my 8.2” noveske barrel

Posted: 6/27/2018 1:34:31 PM EDT

[#32]

Quote History

Quoted:
how's this coming along? I saw a RTKBA barrel for like $140 and it seemed interesting. My thought is that on an SBR with an LWRC short stock would be tiny and light without needing to fold

curious how these work without a can as I am without at the moment.

View Quote

I’m waiting on an ammo shipment from fiocchi, as well as the Mc6-sd and the Veritas.

When the ammo gets here, I’ll likely just do the R2B and V7 in one range trip, then the Mc6sd and veritas once they get here. Might be easier to do it in two parts

Without a can, these are designed to run just fine with supers. Most wouldn’t put on a long scope and use a bench, but Joel at V7 said last time he did he was getting 1-2” groups @100 with his 6.5”. I’ll be doing the same, but from a rest

Posted: 6/27/2018 2:01:36 PM EDT

[#33]

Quote History

Quoted:

I actually have a NIB 5/8x24 TOMB that you can borrow. I bought it to put on my dad's M&P 10 so we can run my Reaper on it, but there's no point in doing so until we get an adjustable gas block.

View Quote

That would be greatly appreciated. I’ll PM my address

Posted: 6/27/2018 5:29:50 PM EDT

[#34]

The post above about Barnes 110 TSX going 1800-2100 out of a 5.5-6" barrel is smoking crack
That's a BIG difference first off and saying it will expand out to 300+ yards is nuts
I have a 12.5" and it went 2,100 fos
Out of a 5-6" you would be really lucky to get that low 1,800 fps figure and damn lucky if at 100 yards it expanded at all

Posted: 6/27/2018 6:25:05 PM EDT

[#35]

Quote History

Quoted:
The post above about Barnes 110 TSX going 1800-2100 out of a 5.5-6" barrel is smoking crack
That's a BIG difference first off and saying it will expand out to 300+ yards is nuts
I have a 12.5" and it went 2,100 fos
Out of a 5-6" you would be really lucky to get that low 1,800 fps figure and damn lucky if at 100 yards it expanded at all

View Quote

I don't know about all that. I spoke to a guy at V7 tech support about their 6.5" barrels and we started talking about velocities and reloading. Long and short, 2100 fps may not be that farfetched from a 6.5" 300 BO barrel shooting a 110 gr bullet. He also said, and I quote "you would be real surprised at the performance out to 200 yards." In any case, I've got mine ordered and will find out soon enough.

Posted: 6/27/2018 7:42:01 PM EDT

[#36]

Quote History

Quoted:

I don't know about all that. I spoke to a guy at V7 tech support about their 6.5" barrels and we started talking about velocities and reloading. Long and short, 2100 fps may not be that farfetched from a 6.5" 300 BO barrel shooting a 110 gr bullet. He also said, and I quote "you would be real surprised at the performance out to 200 yards." In any case, I've got mine ordered and will find out soon enough.

View Quote

The proof is in the puddin. Time to get, then collate reports on said puddin.

Posted: 6/28/2018 4:50:18 PM EDT

[#37]

Posted: 6/28/2018 6:10:15 PM EDT

[#38]

For my money, I don't know if there exists a more aesthetically pleasing expanded bullet.

Posted: 6/28/2018 6:25:10 PM EDT

[#39]

Quote History

Quoted:

I don't know about all that. I spoke to a guy at V7 tech support about their 6.5" barrels and we started talking about velocities and reloading. Long and short, 2100 fps may not be that farfetched from a 6.5" 300 BO barrel shooting a 110 gr bullet. He also said, and I quote "you would be real surprised at the performance out to 200 yards." In any case, I've got mine ordered and will find out soon enough.

View Quote

Honestly it wouldn't surprise me too much, personally. I remember back in like 2012 a firearms trainer making a 790yd hit with a 9" blackout with 110s if memory serves

Posted: 6/28/2018 9:00:44 PM EDT

[#40]

Interesting thread. In for the results.

Posted: 6/28/2018 10:35:16 PM EDT

[#41]

Quote History

Quoted:
Interesting thread. In for the results.

View Quote

Me too

Posted: 6/29/2018 3:03:25 PM EDT

[#42]

Quote History

Quoted:

Honestly it wouldn't surprise me too much, personally. I remember back in like 2012 a firearms trainer making a 790yd hit with a 9" blackout with 110s if memory serves

View Quote

Here’s Travis Haley banging 750m (7:40 mark) by the sounds of it, shooting subs

https://www.youtube.com/watch?v=tgKjbySsAik

Edited to remove derp

Posted: 6/29/2018 3:08:09 PM EDT

[#43]

Quote History

Quoted:
Here’s Travis Haley banging 750m (7:40 mark) by the sounds of it, shooting subs

View Quote

Did he shoot your link?

Posted: 6/29/2018 3:12:01 PM EDT

[#44]

Quote History

Quoted:

Did he shoot your link?

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Fixed

Posted: 6/29/2018 3:14:35 PM EDT

[#45]

Quote History

Quoted:
Fixed

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300 BLACKOUT YEAR

https://www.youtube.com/watch?v=tgKjbySsAik

Posted: 7/2/2018 7:57:46 AM EDT

[#46]

Quote History

Quoted:

Here’s Travis Haley banging 750m (7:40 mark) by the sounds of it, shooting subs

https://www.youtube.com/watch?v=tgKjbySsAik

Edited to remove derp

View Quote

I am pretty sure he said 110s either there or when he posted it to FB years ago.

Based on the numbers he shows it has to be 110, At the 450 range area subs would be dropping over 200", while he was saying something to the tune of 90-100"

Posted: 7/6/2018 7:21:38 PM EDT

[#47]

https://photos.app.goo.gl/dgdtqttLfqxojnvc9

Oh we're about to get into this. 6.5" V7 barrel

Posted: 7/13/2018 7:56:05 PM EDT

[#48]

Any update?

Posted: 7/15/2018 6:29:18 AM EDT

[#49]

Finally fired mine yesterday. 6.5" V7 barrel shooting factory Hornady 110 gr Vmax. Only shot 5 rounds down the barrel, I don't have any sights on this sumbitch yet. Checked for function, everything was good. Chronographed 2 rounds. Velocity was 2034 and 2061. 2100 fps should not be that hard to attain with handloads hopefully. I'll check accuracy next.

Posted: 7/15/2018 1:58:25 PM EDT

[#50]

Quote History

Quoted:
Any update?

View Quote

This @withoutremorse42

[ARCHIVED THREAD] - Ultra-short 300 blackout's in review NEW UPDATE: Third Article page 3 (Page 1 of 3)

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