SpudFiles

Gippeto wrote:1/4" brakeline from the auto parts store of your choice. (NAPA)

.177 pellets fit near perfectly, it'll handle several thousand psi, and the best for last....

ITS CHEAP.

What I used for my .177 pistol, brake lines tubes make awesome cheap barrels, plus they come with brass fittings you can simply screw into whatever. Also, a 1/4 rigid brake line would be rated to about 10,000 - 11,000 psi burst pressure, no need to sleeve or reinforce for an air gun. Standard bundy brake line is rolled from mild steel sheet, with a wall thickness of of 0.028 inches. If you get bare steel lines (no "poly coating" or galavanization), that works out to an 0.194" nominal inner diameter. When I load my pistol with 0.177 BBs, I use a bit of thin paper or plastic for wadding, but I find that you don't need any wadding for 0.177 lead pellets, they're a perfect seal in a 1/4" tube, and with enough pressure the skirts obturates against the barrel anyways.

Brake lines should have sleeves though, they bend SO easily. Check this out, it's my go-to barrel, accuracy is pretty good too:

http://www.amazon.com/gp/product/B004XN ... UTF8&psc=1

Fit is pretty good too, could be better of course
(ID=.18'', BB Diameter=.171'' (Measure with digital caliper))

I use an oversized black iron pipe, namely just to contain any fragments or sharpnel if the barrel does indeed bursts, but it makes a cheap sleeve if you're worried about dropping and bending the barrel.

Vng, did you actually order this on Amazon??? How did that go?

The hand in that photo is mine. And yes, I did and... it arrived? lol