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This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Unread postAuthor: irisher » Wed Jun 22, 2011 9:27 pm

I think mine stripped its gears after only four uses.
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Unread postAuthor: warhead052 » Thu Jun 23, 2011 8:20 am

Like I said, its fine. I can probably fix it, and if I can't ten dollars is not a huge waste of money.
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Unread postAuthor: Gun Freak » Thu Jun 23, 2011 11:03 am

Why waste ten bucks?
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Unread postAuthor: dewey-1 » Thu Jun 23, 2011 1:36 pm

jackssmirkingrevenge wrote:
warhead052 wrote:Is it pretty much saying that the tighter the barrel, the better?


Yes, but a bit more than that - in that a tiny difference in barrel diameter (just 0.5mm or 0.01968 inches in the example above) can make a disproportionate and extremely signifcant difference in performance, so it's worth the effort to find the closest possible fit between projectile and barrel.


Warhead, here is is a comparison of blowby percentage based on the BB diameter. Basically it shows loss of power between barrel types.

Your 1/8 inch pipe requires about 40% more power than a tightbore barrel.
Your pipe barrel would require 140 psi verses 100 psi for a tight bore for equivalent power.

This should explain why you need a tight bore barrel.
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Unread postAuthor: warhead052 » Thu Jun 23, 2011 9:15 pm

Dewey, my only problem is I want to know for a fact that it will feed without me having to cut any part of it, which is why I am going to use the 1/8" barrel... I don't need a tight bore, because my vortex is going to run at around 200 psi....
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Unread postAuthor: warhead052 » Thu Jun 23, 2011 9:16 pm

Dewey, my only problem is I want to know for a fact that it will feed without me having to cut any part of it, which is why I am going to use the 1/8" barrel... I don't need a tight bore, because my vortex is going to run at around 200 psi....

Stupid internet connection made me double post.....
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Unread postAuthor: Gun Freak » Thu Jun 23, 2011 9:45 pm

It doesn't matter what pressure you're gonna use... If you can have a stronger and more accurate gun then why would you use the 1/8" barrel...
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Unread postAuthor: warhead052 » Fri Jun 24, 2011 9:30 am

Because I want to make sure its going to fit without any feeding problems....
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Unread postAuthor: saefroch » Fri Jun 24, 2011 10:59 am

Just don't buy the really cheap BBs, and you won't have feeding issues.
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Unread postAuthor: Gun Freak » Fri Jun 24, 2011 1:10 pm

A 3 foot 1/4" barrel is probably cheaper than a brass nipple and it will have no feeding issues.
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Unread postAuthor: warhead052 » Fri Jun 24, 2011 8:21 pm

Ok. Well I am going to get what I can, and use what I have...
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