.177 barrels.

[warhead052]

Anyone know of a good place to get .177 barrels? I need to get a length of about 9" to make a silencer for my pellet/bb gun I got in a box of guns and parts. Its fairly loud, so it would be nice to put a silencer on it so I can shoot at night.

[Gun Freak]

You don't need .177 barrel to make a silencer... Just get some brass tube as close to the pellet as you can, and drill holes in that. Drilling holes in a .177 barrel would be difficult in the first place, plus I think drilling into rifling would mess things up quite a bit. But first, how were you planning on perfectly aligning the silencer with the gun barrel? That's the essential part.

[warhead052]

On the bb gun I have, the barrel itself stops about an inch from the muzzle, so I would slide the silencer into that area and have an outer shell to support it on the outside of the muzzle. Kinda hard to explain...

[Gun Freak]

Makes sense actually. Still, I'd go with a smoothbore silencer, as I see no sense in having rifling in a silencer. But I'm sure JSR will chime in with a baker's dozen links to existing examples which prove me wrong

[warhead052]

I hope he does. I don't care if its rifled or not, I just need a barrel. I am shooting at about 950-1050 fps, so I really need to quiet this gun...

[Lockednloaded]

Makes sense actually. Still, I'd go with a smoothbore silencer, as I see no sense in having rifling in a silencer. But I'm sure JSR will chime in with a baker's dozen links to existing examples which prove me wrong

If I were him, I'd make the main part of the silencer smooth bore with a mandrel and epoxy casting, but at the end I'd throw in a tiny bit (about an inch or so) of choked, rifled barrel section. I believe in most pellet guns, the last inch or so is the most important part of the barrel, so you could at least preserve that. I believe there's an example on a Beeman air pistol that has a twisted barrel, but the end is choked with rifling to maintain accuracy

[Gun Freak]

Yeah because warhead is going to buy 1" of rifled .177 tube.

/sarcasm

[warhead052]

Haha, Gun freak knows me well... I would cut up my barrel instead of trying to find 1" of .177 rifled barrel... I will try a smooth bore, but I still need to know where to get the materials for the barrel.

[Gun Freak]

That's your problem, not ours!

[warhead052]

Its kinda hard to find .177 barrels, of course I haven't looked to the ends of the earth, but I can't find any on ebay or anything...

[Fnord]

1/4" brake line is *close*. It might be over-sized a couple hundredths. I suppose you could drill out a bolt with the right sized bit, but you'd have to do a pretty damn good job lining it up.
Typically, "toy" bb guns just have a plate of metal wrapped around a mandrel; in most cases the seam isn't even welded shut. Try finding an old daisy lever action at a yard sale or something if brake line isn't close enough.

[cammyd32]

Here: http://www.ebay.co.uk/itm/5mm-Brass-K-a ... _500wt_949 4.5mm inner diameter (177) brass tubing

[Gippeto]

Tried Crosman? There's a crap load of Crosman dealers in the US.

I've used this one in the past...not sure if Allan is back shipping parts or not just yet.

http://www.abairgun.com/

[jackssmirkingrevenge]

I'm sure JSR will chime in with a baker's dozen links to existing examples which prove me wrong

For once, I actually agree with you.

Warhead, pictures of your setup will lead to better advice. Also, if you're taking about a spring piston airgun, note that a significant proportion of the noise is coming from the piston and spring twang, and this effectively cannot be suppressed.

[warhead052]

Its a daisy 880 powerline multipump. The stock is missing, and it leaks slightly out of the chamber, but it still functions. Fairly loud for what I have shot. Comparable to a .22 or even a 9mm.