N/A Where to buy .177 smooth bore barrels?

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Septicdeath said:
I would suggest buying a Crosman 73 saddle pal Crosman AIR 17 or some other vintage co2 bb rifle and cannibalize it for the barrel stock.
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That might be the best route. I’m looking to replace a BB gun barrel with a longer one, around 10”. Making one from scratch would involve drilling & reaming a relatively long hole and keeping it perfectly straight. A tempting project for the lathe but starting with an existing barrel makes more sense.
 
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Found it .... MacMaster-Carr has several possible choices ...
1) 4.5mm (0.177") ID brass tubing
2) 0.178" ID brass tubing
3) 0.180 ID 316 SS tubing (a bit loose)

Most of my BB guns have brass barrels so I guess brass works. At least for a while.
The larger ID 316 stainless tubing might be a bit too big for standard BBs but perfect for the 4.5mm industrial ball bearings I have sitting around. Black Diamond BBs appear to measure 0.172" DIA while the industrial ball bearings are a true 0.177" DIA.

I'll try the brass tubing first.
The KWC Mini Uzi barrel is shorter than I like and I plan to extend it a bit, along with a steel shroud.
No longer true to the real thing but worth it (to me) if the accuracy can be improved.
Let the tinkering begin :)
 
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borne2fly said:
Never heard of those. We’re they used for steel BBs?
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No the original smooth twist barrels was strait up pellet barrels, and quite popular at the time, but back then FX only pressed a rifling into the very last 2 inches or so of the barrel.


After a while they did change to making the rifling all the way, and as it is pressed into the barrel, well FX barrels are like straws in a sense.
Still straws you can hit stuff with, but the system also have its haters.
 
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Looked for that barrel and couldn't find it. Sorry if I got your hopes up.

I do have a barrel off a crosman 760 you can have. .177, about 15" long. Used it on a project to prove out functionallity. Recrowned, has a transfer port and lead machined in. Has rifling though and is 7/16 dia.
 
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Mike_Lenardon said:
Looked for that barrel and couldn't find it. Sorry if I got your hopes up.

I do have a barrel off a crosman 760 you can have. .177, about 15" long. Used it on a project to prove out functionallity. Recrowned, has a transfer port and lead machined in. Has rifling though and is 7/16 dia.
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That’s ok, thank you for looking. I’m going to pass on the rifled barrel. It’s not too hard for me to bore out a steel tube and press in a brass sleeve
 
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Black Diamond BBs I've measured are 0.172" OD, sometimes 0.173".
The BB gun barrels I've measured are 0.177" (4.5mm) ID.
Not sure if a slightly smaller barrel would be better.
As is stands, 4.5mm ID brass tubing is available but thin as a straw. It will need a steel outer sleeve, and there is some 7/16 OD 4130 tubing available that will work nicely for this even if it needs to be slightly opened with a deep hole 13/64 drill. Either loctite or solder the two together.
This can serve as a stout barrel structure which can then be pressed into a larger cosmetic barrel shroud. I've done this in the past to achieve a tapered barrel look. Although that was for pellet guns, not BB guns.
My BB guns serve as rattlesnake guns ..... close range and full auto. And all this effort is to improve the accuracy a bit.
 
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marflow 777 said:
did you go to JG airguns they have barrel that Septic said to try they were about 25 bucks plus shipping
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If it’s the one I saw, it’s a rifled barrel from Daisy. It would work but I’d get more blow-by due to the rifling, which I guess would get worse as the steel BBs eventually wear away the rifling.
 
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