Inner Barrel

[Mos]

On the topic of cylinder volumes,

does anyone know the Mancraft cylinder volume?

 

[Hangtight]

On the topic of cylinder volumes,

does anyone know the Mancraft cylinder volume?

 ~6.5cc

 

[Mos]

Thank you so much!

can finally start getting an idea of the cylinder/barrel volume ratio that is in my VSR.

Life saver.

 

[ImTriggerHappy]

you will have customs and VAT on orders from x-fire so before ordering do the sums as it won't save a wedge buying direct.

Think it came to under £70 last time I ordered an M4 barrel from there which is still way cheaper than Airlab because thats probably £85 with shipping.

 

[sokar666]

I have 3 upper gearboxes all ready built, all set for the desired barrel length and spring strength, all teflon modded, the works.

The question was not barrel length, that's a personal thing.

The original topic was price to performance.  Will a £70-£75 PDI barrel massively out perform a £20 ZCI barrel and of course a £50 Prometheus barrel.  I wasn't after advice on which to buy.  It was more i have an issue with always wanting the best, that includes basically everything in life and i don't mind waiting and saving to acquire the best knowing i have bought the best.  What i hate is buying the best and being let down, i hate that more.  So the question is PDI performance worth the money or are we talking minor improvements.

As example, 3 guns, identical in every way except the barrel, each different manufacturer.  Will the extra cost equate to huge performance increase or are we basically all spreading the same info based on a mythical ethos that X brand is better because i saw a youtube video of a hit at some stupid distance.

I was just after what people thought, i was just using my personal build as an example.

 

[PT247]

I wouldn't use them if I didn't think they were worth the gain.

So, do what you want as most folk will not buy a PDI and a ZCI and do this testing for you.

Something I did do though was try various barrels on one of my Krytac builds. I tried an Orga 6.23mm WBB, a PDI 6.05mm and a Prommy 6.03mm barrel and matched the fps by changing the spring.... the Orga cost £90, the PDI £70 and the Prommy £50 (ish)..... They all performed on par with the OE Krytac barrel so I left the Krytac standard and sold on or used in other guns the "upgrade" barrels. So that is as close to a scientific experiment I can do with airsoft, results are in.... stick with your OE barrel.... or don't coz it is an ICS and not a Krytac.

 

[sokar666]

I wouldn't use them if I didn't think they were worth the gain.

So, do what you want as most folk will not buy a PDI and a ZCI and do this testing for you.

Something I did do though was try various barrels on one of my Krytac builds. I tried an Orga 6.23mm WBB, a PDI 6.05mm and a Prommy 6.03mm barrel and matched the fps by changing the spring.... the Orga cost £90, the PDI £70 and the Prommy £50 (ish)..... They all performed on par with the OE Krytac barrel so I left the Krytac standard and sold on or used in other guns the "upgrade" barrels. So that is as close to a scientific experiment I can do with airsoft, results are in.... stick with your OE barrel.... or don't coz it is an ICS and not a Krytac.

Please don't get me wrong, i'm not questioning people's opinions, so if i upset anyone i apologize that's not my intention.  It's just something i've been curious about whenever i hear about a specific brand.  I may just have to do something similar, if like everyone says barrel length makes no difference as long as you are running the right cylinder and parts.  I may just have to put the prommy in one, pdi in another and zci in another and see what the results are.

Of course that's about as close as you will get as airsoft has so many varying issues with range and trajectory, like you stated above with your krytac.

 

[PT247]

you haven't upset me, or anyone else mate, is a discussion, and opinions will always differ! Like I say though, I doubt anyone has tried both a PDI and a ZCI in the same gun on the same set up so no one can give you a definitive answer.

 

[sokar666]

you haven't upset me, or anyone else mate, is a discussion, and opinions will always differ! Like I say though, I doubt anyone has tried both a PSI and a ZCI in the same gun on the same set up so no one can give you a definitive answer.

Yeh i think i might actually do that, PDI in the maybe dmr model, if i decide to do it, prommy in the carbine and ZCI in the cqb version and see what happens.  Now i know to be truly effective i suppose i would have to buy 3 versions of each brand all matching the same 3 sizes, yeh that's not gonna happen lol.  But considering i am making 3 upper receivers it's something to test.

 

[PT247]

off topic, but why are you building the middle sized one?

 

[sokar666]

off topic, but why are you building the middle sized one?

Site rules, 450fps dmr , 350fps full auto, 328fps  my local indoor cqb

r

yes i'm aware that i could use the carbine version for cqb and change spring, it's just a project i've wanted to do. Take advantage of the split gearbox because if i don't it will sit there gathering dust and i hate not using it as i'm a big fan of ICS.  I always try and make a loadout for each gun i have.

edit - and i wanted to give them very distinct external looks.  I know i could just use a carbine version for everything, the problem is i probably wouldn't, it's just me i always like choice. trying to decide which gun and loadout I take to a skirmish is worse than a woman buying shoes lol, i could spend a whole day trying to decide from military ones to my p90 stargate loadout for example.  Plus airsoft is also the cool factor which does change your opinion on things.

 

[PT247]

there is something to be said for switching uppers and have the sights and accessories all set up with just a swap over. Far easier to buy 2 or 3 different guns though if the fps change is needed (although that would cost a wedge)

 

[sokar666]

there is something to be said for switching uppers and have the sights and accessories all set up with just a swap over. Far easier to buy 2 or 3 different guns though if the fps change is needed (although that would cost a wedge)

Yes i could just buy 3 guns for 3 different environments but like you said that's a lot of cash.  If i hadn't have had the ICS i would probably not even thought of it.  It is literally just the reason of opening a case and having everything ready at an instant swap, that is my entire argument for doing it, simple as that.  And when i'm complete i'll buy something else and start a new project, i would like one of the krytac's, maybe the LVOA model or the new vector when it's released.

 

[ImTriggerHappy]

you haven't upset me, or anyone else mate, is a discussion, and opinions will always differ! Like I say though, I doubt anyone has tried both a PSI and a ZCI in the same gun on the same set up so no one can give you a definitive answer.

I have I have tried pretty much every Aeg barrel in my Sig even different diameters of the same brands as well. Tested them all indoors locked in a vice. Also tested bore diameters and straightness.

Best average barrel I found was the pdi 6.08 but the 6.05 is better if you lap it.

One thing I will say though regarding price is unless you have a really crap oem barrel its the least return for your cash so zero £s verus up to £70 is it worth it? Not really no.

 

[PT247]

am tempted to buy another Evo3 and carry a couple of springs for various site limits, but my PDW shoots good enough for AEG games and generally use my VSR outdoors.

 

[PT247]

I have I have tried pretty much every Aeg barrel in my Sig even different diameters of the same brands as well. Tested them all indoors locked in a vice. Also tested bore diameters and straightness.

Best average barrel I found was the pdi 6.08 but the 6.05 is better if you lap it.

One thing I will say though regarding price is unless you have a really crap oem barrel its the least return for your cash so zero £s verus up to £70 is it worth it? Not really no.

what were the findings? Did you get a grouping test at range? 

 

[sokar666]

am tempted to buy another Evo3 and carry a couple of springs for various site limits, but my PDW shoots good enough for AEG games and generally use my VSR outdoors.

Yeh i love my evo, i'm tempted to do a sniper next

what were the findings? Did you get a grouping test at range? 

I'd be curious to know that as well

 

[ImTriggerHappy]

what were the findings? Did you get a grouping test at range? 

Tested at 30 to 50 meters in 5 meter increments.

Best flat out range was prommy 6.03 but groupings wasnt great.

Best mid range groupings were orga 6.23 but a few too many flyers.

Best groupings and consistency on average to long range was the Pdi 6.08 until I lapped the 6.05.

Straightest and most even bore diameter was the PDI barrels both were way better than anything else.

Keep meaning to redo it all in one day and film but either don't get chance or just cant be arsed.

 

[sokar666]

Tested at 30 to 50 meters in 5 meter increments.

Best flat out range was prommy 6.03 but groupings wasnt great.

Best mid range groupings were orga6.23

Best groupings and consistency on average to long range was the Pdi 6.08 until I lapped the 6.05.

Straightest and most even bore diameter was the PDI barrels both were way better than anything else.

Keep meaning to redo it all in one day and film but either don't get chance or just cant be arsed.

That's interesting findings, quite an eye opener, please link in forum if you do make a video of it, would really like to see that

 

[ImTriggerHappy]

That's interesting findings, quite an eye opener, please link in forum if you do make a video of it, would really like to see that

Its in the to do list but want to try and get an alon barrel made to test at the same time.