Diana Diana 54 air king pro 7.5J

If looking to have a detuned 54 Airking. I would have a look for a 22mm piston kit and a weaker spring. The 12 fpe UK market 54’s use a restrictor washer in combination with the same spring I currently have in my rifle. .115 wire , rather than the .130 with in the FAC models. I believe the spring length is also shorter in both the factory detuned models 7.5 J and the 12fpe . I was able to disassemble without a spring compressor and it had about 1” of preload.
 
Got the rifle finished up while waiting for parts for another impulse buy. The new ARH spring got a delrin top hat made and I used the factory spring guide as it was about as close to a perfect fit as I would make myself. The steel washer with the factory guide was polished to a mirror finish, and burnished with some ARH moly. I also reused the factory piston seal , I didn’t see anything wrong with it although I found it to be a little tight before I sized it to my liking.
I mounted an Athlon 10 x 42 in the lowest rings I had available , still too high for a good cheek weld. A new lower set is in order. I just finished sighting in and tensioning the sled to where I found it to be most accurate. While also playing with the stock screw torque. At 35 yards shooting either the 10.3 or 8.4 JSB’s one ragged hole groups. I’m pretty happy with the way it shoots. The sled action is quite different to any other springer I’ve ever owned or shot. Once I put a ton of pellets through it I’ll see what I’m getting for velocity, I’m not chasing power on this one , just want a good solid performer with mild manners.
I did have to make quite the elevation adjustment on this scope . I’m thinking illl have to go with a droop mount to get it closer to optical center. Any suggestions on a good droop mount for a 30mm scope?
 
I’ve got just over a tin of pellets through the rifle now and thought it would be time to see what the maccari spring and top hat would do power wise. The shot cycle of this rifle is unique to say the least. No jolting but I’m glad to have a scope with ample eye relief. The 8.4 JSB’ s average at 970fps and the 10.3’s at 880 . Not as powerful as some of the numbers I’ve seen posted on this rifle but then again I wasn’t chasing power to start with.

What I have found is that the leade is loose on this particular rifle. Which seems to be a regular occurrence with the Diana line of rifles. I’ve got several sizes of JSB pellets from .451 to .453 and none fit tightly when pushed into the barrel with a finger. I did try some Baracuda hunter extremes and they did fit a bit better but weren’t quite as accurate when pushed out past 30 yards.

Not sure if I’ll be keeping this one. I’m going to out it head to head with the R9 and see if it can keep up. To be fair the R9 is presently tuned at 13 fpe and shooting the 8.4’s from the right tin will put ten pellets under a dime at 40 yards .
 
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I’ve got just over a tin of pellets through the rifle now and thought it would be time to see what the maccari spring and top hat would do power wise. The shot cycle of this rifle is unique to say the least. No jolting but I’m glad to have a scope with ample eye relief. The 8.4 JSB’ s average at 970fps and the 10.3’s at 880 . Not as powerful as some of the numbers I’ve seen posted on this rifle but then again I wasn’t chasing power to start with.

What I have found is that the leade is loose on this particular rifle. Which seems to be a regular occurrence with the Diana line of rifles. I’ve got several sizes of JSB pellets from .451 to .453 and none fit tightly when pushed into the barrel with a finger. I did try some Baracuda hunter extremes and they did fit a bit better but weren’t quite as accurate when pushed out past 30 yards.

Not sure if I’ll be keeping this one. I’m going to out it head to head with the R9 and see if it can keep up. To be fair the R9 is presently tuned at 13 fpe and shooting the 8.4’s from the right tin will put ten pellets under a dime at 40 yards .
I would love to have a 54 @ 7.5 J
 
Got the rifle finished up while waiting for parts for another impulse buy. The new ARH spring got a delrin top hat made and I used the factory spring guide as it was about as close to a perfect fit as I would make myself. The steel washer with the factory guide was polished to a mirror finish, and burnished with some ARH moly. I also reused the factory piston seal , I didn’t see anything wrong with it although I found it to be a little tight before I sized it to my liking.
I mounted an Athlon 10 x 42 in the lowest rings I had available , still too high for a good cheek weld. A new lower set is in order. I just finished sighting in and tensioning the sled to where I found it to be most accurate. While also playing with the stock screw torque. At 35 yards shooting either the 10.3 or 8.4 JSB’s one ragged hole groups. I’m pretty happy with the way it shoots. The sled action is quite different to any other springer I’ve ever owned or shot. Once I put a ton of pellets through it I’ll see what I’m getting for velocity, I’m not chasing power on this one , just want a good solid performer with mild manners.
I did have to make quite the elevation adjustment on this scope . I’m thinking illl have to go with a droop mount to get it closer to optical center. Any suggestions on a good droop mount for a 30mm scope?
Burris Signature Rings with Inserts.
 
I would love to have a 54 @ 7.5 J
I didn’t even shoot the rifle before I tore into it. If you’re interested, I have the restrictor washer and factory spring to get a 54 down to the 7.5j . The rest of the rifle is exactly the same as the full power. I would imagine it was quite an easy shooter at that low a power output.

While surfing the web it appears we have a big surplus of these rifles available from quite a few retailers. They are selling for well below MSRP. 500$ CAD ( snow pesos) or 360$ US. The full power models are still selling for 1000$
 
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I didn’t even shoot the rifle before I tore into it. If you’re interested, I have the restrictor washer and factory spring to get a 54 down to the 7.5j . The rest of the rifle is exactly the same as the full power. I would imagine it was quite an easy shooter at that low a power output.

While surfing the web it appears we have a big surplus of these rifles available from quite a few retailers. They are selling for well below MSRP. 500$ CAD ( snow pesos) or 360$ US. The full power models are still selling for 1000$
yes i would be interested in your parts , i have an old 54 with a broken spring , i bought it that way but never got around to fixing .