and there is your problem. Scope mounts don't fit the recieiver. Not the recievers fault, but the rings fault. Other rings WILL fit correctly. There are many styles of scope rings but they fall into 2 basic styles. Those that are rounded to fit over a round barrel and those that are more square cut to fit over a receiver. You are using the round type over a square receiver which is WHY they will not mount tight. It is NOT the 880's fault, it is the fault of the WRONG part being used on it. I came in to relax and saw a multi paragraph personal attack. Completely uncalled for. You did not ask for help, you shared thoughts and musings. But you got help from many anyway. I will unsubscribe, good luck Bothers the bejeebers out of me when someone blames a gun for the fault, when the wrong hardware is mounted on said gun.
A note for anyone late to the party so to speak, or new to air guns (as i am) Please don't take this thread as knocking the Daisy 880, for what you pay for it (or even $20 more) it is a FANTASTIC rifle. As has been pointed out to me, and after rereading my initial post I agree, most of my accuracy issues lie in how I have monkey rigged the scope mounts to take my old rifle scope instead of really giving the factory scope a chance.With that, I will add to the thread this: I am now officially asking for advice on fabricating cheaply or without cost if possible, a better mounting for the scope bases. I've considered epoxy, but really don't want it to be permanent. I cant decide if I should go for the half round stock and mount it to the gun then the bases to it, or fill the bases with a shim or epoxy to flatten them out and make them fit the gun properly.
just buy the correct scope rings. These are for 1 inch scopes. $10. The CORRECT part, not some cob job to mount what you already have. https://www.pyramydair.com/product/leapers-accushot-1-rings-high-9-5-11-5mm-dovetail?a=635
I have to agree with Stonykill. Unless you enjoy the challenge of it I would just buy the right equipment for your rifle. (ie: new scope or rings) I would not epoxy anything to your gun I think you will regret that. Good luck!!