GECO Model 25D

[GecoGuy]

Anyone know anything about this gun?
History, fps, etc....

[RedFeather]

Geco was a distributor of Diana air rifles and it is not uncommon to see them so marked (like the RWS logo).  Your gun is a Diana 25.  Not sure what a 25A is.  I only know the 25 and 25D (adjustable trigger).  A picture would be helpful in narrowing it down.

[northern lights]

The 25 should shoot 550 fps in 177call an about 430-450 in 22cal. Nice lightweight plinker most have the direct sear trigger but to me they feel pretty nice . mine problemly have a lot of wear on them. Value is about 50.00 for ave an 100.00 for real nice one. I like them have four of them 2 in 177 cal an 2 in 22cal. also the older ones don,t have a scope rail.

[RedFeather]

A good 25 will cost you a bit more than $100.  The 25D can run up to $150, depending upon condition.  These are very nice short range guns, not "boy's rifles".

[GecoGuy]

I'm sorry it is a 25D not "A"!

I can say that anything beyond 20 yds and your lucky to even hit the target. I have shot an empty pop can at ~40 yds and all it did was dent the thing. However I have taken many birds (few crows as well) with this gun!

and it is a .177, which way do you turn the screw to shorten the second stage?

[RedFeather]

Have you oiled the piston seal?  Sounds like it has dried out a bit. Not sure about which screw does what.  Might want to ask on the DWC -

http://www.network54.com/Forum/184474/

(No - wait.  It's a dog gun!  I'll give you fifty bucks for it.  )

[GecoGuy]

that thing has not seen an ounce of maintenance it whole life....

[airnutz]

that thing has not seen an ounce of maintenance it whole life....

My info is, the 25D's can really shoot well for a small gun.  I would do the maintenance and replace what is necessary, and have fun.

I am currently "looking" for one here in Germany, to practice renewing the bluing, there are some really nice strong ones for $30 to be found.