Thanks. That is really good information. WELCOME to the forum!
I have one stainless steel tube that I ordered from Online Metal and the bore has sort of a smoothed ripple look to it. I would stick to aluminum tubing. The 6061 T6 is likely the best.I would love to make a few other blowguns like my cs pro .625. Can anyone tell me exactly what kind of tube stock I'm looking for? I'm wondering if something exists that is more of a finished bore...
Steel wool on a dowel rod works well too. Chucked up in a drill, or by hand. It just takes longer. Obviously. Used it on an oxidized tent pole one time, and it gave the bore a mirror polish. Huge difference in projectile performance too. Then a very, very, very small amount of silicone spray, and buffed away till it ain't there anymore, as in dry. Tyvek cones, made from FedEx envelopes (big shout out to squirrelslinger for that advice). Tyvek is the material the envelopes are made of. The stuff is also used to wrap houses, and used to make protective clothing like coveralls. It is easy to work like paper, but it is extremely durable and tear resistant.I think the CS Pro bore is hard to beat . I found some 8 foot tube just a bit smaller in diameter at my local Menards home store . The inner bore is no better than the CS . You can also polish the inner bore with compound and a dowel rod with swab on a power drill .