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Old 03-25-2020, 05:04 PM   #1
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How important are inner barrels?

Seems like I've read a considerable number of differing opinions on this. So, I think I'll be trying my hand at Rhop pretty soon, and to do so, I'll want it in a nice barrel (probably test on stock barrel first). But this mak s me curious. Does buying a nice inner barrel (Prommy, PDI, etc) make that big of a difference? How important are they if, say, I want to push my DMR to max accuracy at about 250 feet. Thanks!
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Old 03-25-2020, 07:15 PM   #2
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Quality and straightness matters the most, the philosopher barrels are amazing and they have what is basically a er hop bucking specifically made for their barrel, I highly recommend, but prommy with a lap is basically the same, as well as pdi Edgi And so on
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Old 03-25-2020, 07:49 PM   #3
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@Aidin, regarding the philosopher barrel, what chamber are you using? AA doesn't work well with bridged, or so I've heard. I'm going to be getting a philosopher barrel, chamber and bucking when the whole set is out. (funded by selling old parts and guns and such)
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Old 03-25-2020, 08:12 PM   #4
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Quote:
Originally Posted by Sodium View Post
@Aidin, regarding the philosopher barrel, what chamber are you using? AA doesn't work well with bridged, or so I've heard. I'm going to be getting a philosopher barrel, chamber and bucking when the whole set is out. (funded by selling old parts and guns and such)
Currently the aa but going to buy the philosopher chamber when it comes out, I messaged him on a eta release date, he said it’ll be out mid April or a little earlier, so hopefully in a couple weeks
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Old 03-25-2020, 10:36 PM   #5
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Buying fancier inner barrels basically has diminishing returns. Consistency of bore quality and straightness are the most important for accuracy. Length and bore diameter only matter for velocity (assuming excess available cylinder volume). These days, I don't bother spending more than $30-40 for your "budget" AA or lambda or ZCI barrel.
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Old 03-26-2020, 05:29 AM   #6
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While I'm not saying they are unimportant (they sure are important for that matter), at some point shaky hands, crosswinds or irregular BBs are gonna screw with accuracy more than microscopic imperfections of inner barrels.

Generally Prometheus or Lambda (=PDI) grade inner barrel are already more than enough in quality you won't realistically gain a whole lot of accuracy with better (if any) barrels.
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Old 03-26-2020, 11:12 AM   #7
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Non important. Honestly, I think they could be made of hard plastic and perform the same. Straightness and making sure the window cut works well with your bucking of choice/rhop is most important.

I never clean mine. Accuracy doesn't change. 1tonne will report the same.
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Old 03-26-2020, 03:43 PM   #8
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I clean mine on the very rear occasion but I cannot see a difference in accuracy.
I normally run with AA as they are good value for money.
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Old 03-26-2020, 04:37 PM   #9
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Agreed, that barrel business is bunk. Sure, it has to be straight, and obviously as smooth as possible, but you can do that with any barrel really. My CM is running the stock aluminum barrel, albeit polished and checked for straightness, but it was absolutely free. It got thrown out by the previous owner because it wasn't a Prommy. It may not last as long as some, but then again, we'll just stuff more free in there if and when it ever goes bad. It's hard to beat free...

I'm running a brass 495mm 6.04 from a G&G (cut down from 509mm) in my L96. Again, no adverse effects. As long as the air is good, the ammo is good, and the hop is spot on, the barrel just makes it go 'that way'...
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Old 03-26-2020, 04:54 PM   #10
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I'd also like to reference all this new fangled dual bore barrel craziness.

Where is the proof?

Where is the proof the bb rides a cushion of air and not the top of the barrel (i'm not saying I know, either)?

Where is the science? REAL science?

Where are the comparisons with standard tightbores?

I mean having someone anecdotally say "oh hey I installed it and my accuracy improved" isn't proof. Maybe the new barrel has a better cut window for your bucking. Maybe you made other changes as well and didn't mention them (very common). Maybe your previous install was crap.

We've pretty well established the porting on the CJ barrels is marketing brouhaha, with the anecdotal experiences being (even mine) that they seem to work pretty well on over-volumed gas guns (all gas guns, really). That's still not proof. They're just decent budget barrels for the price. They're usually straight, and they have a good window for the ML buckings.
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Old 03-26-2020, 07:35 PM   #11
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I understand that you can polish a barrel for 4,375 years straight so it has the ULTIMATE finish. You can use tools and equipment to make the finish better than others. On a microscope level. But the bb only needs a certain level to go through the barrel whether it touches it or not. Since you can have great performance without cleaning your barrel often, I don’t think the extra finish quality makes a difference. I have edgi barrels and they perform great, but so do barrels for less than half the price. The barrel needs to be straight and allow the bb to pass without interference. It comes down to HopUp and air seal I believe.
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Old 03-27-2020, 04:52 PM   #12
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Can I just summarise by saying that it is très important.
You can buy a lapping kit and use a drill for an hour to smooth out your barrel and give it a perfect finish.
On the other hand your barrel could fricking die.
Tanio Kobua barrels crazy jet barrel and tnt barrels all have these special things that use airflow to do stuff. That is utter crap.
But...they are still better than a stock barrel unless your gun is a ssg, specna arms, krytac or ares striker as01/2/3 which already use brass/steel tightbores.
Ultimately, the thing you want is a straight, polished stainless steel barrel.
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