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Discussion Starter · #1 ·
Hello,

i am running a PDI BoreUp Cylinder with a PDI Hop Up Chamber, but i am unsure which barrel would be the best for this setup.

I´ve read that, because of the cylinder volume of the bore up, i should use a inner barrel above 500mm - so i found a PDI 6.08 500mm inner barrel , would that work well?

Does someone have experience with the BoreUp cylinder and knows which barrels are the best to use?

Thanks for any help and greetings from germany!:yup:
 

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Discussion Starter · #10 ·
If I remember rightly (so I could be wrong), the standard PDI cylinder has a slightly smaller volume than a normal one. The bore up version is actually very similar to a stock cylinder volume (if only just over).
Also, you are looking at using a 6.08mm inner barrel. This is wider that what most of us use and is less efficient. 430mm would be good if the bore size was 6.01mm-6.03mm. I would advise trying a barrel of around 390-410mm because of the air loss.
Though you may not even see much of a difference between a 430mm barrel and a 390mm.
If possible, get yourself a 6.01mm barrel. They are way more efficient and none of us here have been able to see an accuracy difference between bore diameters. The only difference is the tighter bore will give more fps and this can contribute to better accuracy. But if a wide bore barrel and a tight bore barrel are both shooting the bb at the same energy rate then the accuracy should be about the same.
Thanks for the Information! I read that the bore up cylinder has a diameter of 23mm instead of 22mm which the original cylinder have. If I use a 500mm 6.08 i would have a cylinder:barrel ratio of 2.57:1 - if I calculated correctly , which I am not sure about

So you guys would recommend a 430mm barrel even with 1mm more cylinder diameter ?

Greetings from germany
 
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