I bought a new Hawke AirMax 4-12X40 AO scope for my Diana RWS Model 34 .177 springer. I use this to shoot starlings and other pests.
I had mounted a spare Burris Fullfield E1 (which has an etched reticle and is supposed to be suitable for airguns) in an RWS mount. The scope wasn't ideal due to the set parallax but it worked reasonably well for about 25 shots at which point the POI versus POA was noticably off. Re zeroed and about 15-20 shots later, I was way off again.
So I got the scope with an adjustable parallax, so that problem is fixed. And I bought a Diana Bullseye Zero Recoil Mount to put it in. When I got the mount, I immediately noticed it was too long to fit the scope, but the rings can be moved on the shafts. I checked some slow-mo videos on the net and saw that the mounts doesn't move anywhere near its full range of travel. So I added a rubber o-ring to each shaft and moved the rear ring forward. The screws inside the ring that tighten it to the shafts really digs into the shaft. I was able to move the rear ring forward enough to fit the scope with some room to spare. I then video'd the gun in super-slow motion and found that the rings do slide back to the 0-rings. But hopefully I am cushioning the shock some, not making it worse.
Anyway, not sure how long it will last of ultimately how it will treat my scope. I've been able to zero it from my upstairs window and it's holding minute-of-starling through about 50 shots now. I can break target clays and small pieces of clays with it at about 100 feet so far. It seems well made. Might be something to consider if you have a hard recoiling springer.
Here it is.