There is not much information on the internet about the Diana Model 25 air rifle. It is a youth model, low powered and the originals were made prior to and perhaps during the initial years of World War II. I’m documenting the attempted resurrection of one of these rifles. Perhaps this information will be of use to someone out there.
The rifle came to me with a bent barrel. It’s not the typical upward bend resulting from the barrel being allowed to snap close under the power of the main spring. It is bent heavily to the right, to the point where the owner tells me that a pellet would get stuck in the barrel.
A Few Days Later
After a bit of proper lubing of the spring and other parts, the rifle was reassembled. I’d had some doubts about the process, but over on the Gateway To Airguns forum Jon “eeler1” posted a link to a video about a similar rifle. This one is a Winchester 422, and looks like a dead ringer for the Model 25. It’s actually a Diana Model 22, but I don’t know what the differences are between the two models. I’d not checked out the NorthWest Airgun channel in a while. He’s got some other good stuff over there. Worth taking a look if you’re interested in airguns. Anyway, he did three videos on his grandson’s rifle – and that was a big help as when he reassembled he showed me how to do the trigger. I’d been over thinking it and was planning to make a slave pin for the trigger. That would NOT have worked. When I saw him put it together things clicked in my brain and sure enough, it’s not as hard as I thought it was. There was some kind of hangup, but eventually I got it together properly and voilá! The rifle shoots!
Thanks for sharing. I found the differences between that gun and my 1969 Model 35 noteworthy. I haven’t gotten the cap off the rear of the compression tube to disassemble my gun yet. It was in a wet climate, too, and I suspect rust is holding it together.
Well, I updated the post today. The rifle’s together and functional. We’ll see how it develops from here. 🙂
Jumped here from the GTA site. Great pictures, looking forward to the rest of the story as it unfolds.
Good luck on your mission.
Thank you! Take another look at it, I updated the post this afternoon.
I have inherited a Diana model 27 British made post war. 50’s or 60’s. It does not hold
the cocked position. I would like to get it into shooting condition. I need a source for
parts and a good schematic. Please email me
Gary J. Christy
The triger had a griper which could be round after too many shots .it,s mechanism is very simple if you open it you can fix it by rasping
Very informative. My Gecado 25 is possibly a clone. I am having trouble removing the drift pin that secures the piston washer screw. Any hints would be appreciated.
I need help with mine. It doesnt break over at all. Pull barrel down amd it doesnt click back.
Hey, Jeremy. If I understand you correctly, when you break the barrel over to cock it, the piston won’t latch back in place and follows the cocking rod back up the tube?
My name is Dennis from Indonesia. I’ve just found the same product but the original mainspring is not available here. Please let me know the length of the mainspring since I’ll make an attempt tp find its alternative.
Hi, Dennis. I do not know the length of the spring. The information I have is as follows:
The spring is 0.110 wire with 30 coils and 0.500 inside diameter.
Those 30 coils include the two collapsed coils at the ends of the spring. The critical dimensions in recreating such a spring are the wire diameter and the inside diameter. If you get those two right then the rest should work out OK. Take a look at the picture of the spring and inside components. With your rifle apart you can calculate the length approximately by comparing the length of the spring guide to the spring in the picture. It appears (at first glance) that the spring in its uncompressed state is roughly two and a half times the length of the spring guide.
If you have a spring made, you’ll want it to be snug but not TOO tight on the spring guide. This will reduce the sound of the spring and will give it the best guidance to provide longevity of the spring.
Thank you for this informational article, I also have similar model 25 airgun gifted to me by my Grandpa, it was in state of neglect for 2 decades and I am trying to restore this gun, I need a new stock for my gun however I am very confused with the wood type. by any chance do you know about the type of wood used for stock.
Thanks again for this wonderful article.
I’m glad the article was of service to you, Amit. Unless you can find a used stock somewhere you will need to have one made from scratch. I BELIEVE the original stock is some kind of European walnut, but am not sure. That being said, a number of different kinds of lumber will work, depending on what you have available. Over the years I’ve made stocks from Brazilian Mahogany, Jatobá (another Brazilian hardwood) and have a piece of abarco (I THINK that’s what it’s called) drying for future use. You need a type of wood that is tough and not too hard to work. The Diana 25 isn’t a hard kicking rifle so you don’t have to worry like with some guns about the possibility of the wood splitting on you when cocking and firing the rifle – as long as you select a good grade of timber and are careful about stock layout.
A Mommy Riyah
Where can i buy trigger of Diana mod 25 d?
You would need to look at what is offered by companies that provide spare parts.