Farco 0.51" Air Shotgun

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
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jackssmirkingrevenge
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Sun Oct 01, 2017 8:35 pm

I managed to fulfill an adolescent dream, now the proud owner of a Farco Air Shotgun:
pbAzjva.jpg
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It's made for CO2 but I've been testing it with compressed air using a cheap and cheerful Chinese three stage PCP pump, it takes about 60 strokes to fill the chamber to 1000 psi, and around 15 strokes after each shot to bring it back up to pressure. Not the most efficiently designed airgun by a long shot but extremely fun to shoot, hope to be able to try it out at longer ranges and a bigger variety of loads in the near future.

edit: I originally called it the "Model 470" because of the number marked on the breech, however after seeing this video with a similar rifle marked 424, that's probably the serial number.
Last edited by jackssmirkingrevenge on Fri Nov 24, 2023 9:43 am, edited 2 times in total.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Cthulhu
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Sun Oct 01, 2017 10:34 pm

That's a beauty!
Where did you find it?

If you're having trouble finding CO2, I'm sure you could figure out some adapters to fill it from a large paintball tank
This weapon serves to silence the noisy speakers of the stupid of the other street! (joke) -Hectmarr
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jackssmirkingrevenge
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Mon Oct 02, 2017 6:15 am

Cthulhu wrote:Where did you find it?
It came up for sale on a forum and I snapped it up. I believe it was originally sold here.
If you're having trouble finding CO2, I'm sure you could figure out some adapters to fill it from a large paintball tank
I have bulk CO2 on tap but prefer to use air, more consistent even if it isn't as dense as a power source.
hectmarr wrote:You have to make many weapons, because this field is long and short life
hectmarr
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Mon Oct 02, 2017 9:06 pm

I really like this weapon. It charges exactly the same as my standalone hybrid. Shoot pellets? What size are they? Apart from this, if you shoot it with air, you will greatly improve the physical state :D
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jackssmirkingrevenge
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Tue Oct 03, 2017 4:59 am

hectmarr wrote:Shoot pellets? What size are they?
Much like a spudgun, anything that fits in the barrel becomes an option :D

I tried 8 x 0.177" BBs at 50 feet fired at a soda can, they patterned nicely in a 1 foot square and did not lack power, punching straight through 1/4" thick fiberboard - but the can was untouched. Definitely a short range weapon without a choke. Same target at the same range with 30 x #4 shot (about 1/8" diameter) resulting in a similar spread and only three hits on the can.

I also tried a 3/8" steel bearing, punched straight through a 1mm thick mild steel sheet and went on to penetrate 1/4" thick fiberboard 30 feet behind it.
Apart from this, if you shoot it with air, you will greatly improve the physical state
Aside from better velocity because of the reduced density, air is definitely nicer to the seals than CO2.
hectmarr wrote:You have to make many weapons, because this field is long and short life
hectmarr
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Tue Oct 03, 2017 8:33 pm

Cute gun like I said before and with air must work very well. You have awakened in me very keen to manufacture a shotgun but with gas and air 8) I have a lot of 3/16 "steel balls without knowing what to use.
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Cthulhu
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Tue Oct 03, 2017 9:02 pm

What kind of valve does this use?
This weapon serves to silence the noisy speakers of the stupid of the other street! (joke) -Hectmarr
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jackssmirkingrevenge
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Wed Oct 04, 2017 6:50 am

hectmarr wrote:You have awakened in me very keen to manufacture a shotgun but with gas and air
Shotguns are definitely fun if you have the power. The power of a single slug is divided by multiple projectiles, so you need to start with a high number to make it worthwhile. With hybrids, power is not usually an issue ;)
What kind of valve does this use?
Hammer valve just like most commercial airguns. One day I'll take it apart and do some detail photos.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Anatine Duo
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Fri Oct 06, 2017 4:35 am

that's definitely on my adolescent dream list
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jackssmirkingrevenge
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Fri Oct 06, 2017 5:47 am

Anatine Duo wrote:that's definitely on my adolescent dream list
One of the few adolescent dreams I can actually share in polite company :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Brian the brain
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Fri Oct 06, 2017 2:29 pm

Me likey.. How about putting a partially balanced valve in this one aye. Like you did with the Crosman pistol?
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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jackssmirkingrevenge
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Sat Oct 07, 2017 5:12 am

Brian the brain wrote:Me likey..


I'm surprised, it has a 30 inch barrel :D definitely your style of build though!
How about putting a partially balanced valve in this one aye. Like you did with the Crosman pistol?
I have something similar in the pipeline, but it has value as a collectible so I'm not really inclined to modify it.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Air2theBrain
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Wed Nov 15, 2017 4:24 am

I'm in love with this... :D
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