Oh I have been. The Simmons 22Mag is supposed to be up to magnum springer capability, as was the UTG that the reticle tube went sideways on. The warranty replacement has held up ok though, so far, but I can't dial in for a 50+ yard shot or it goes all inconsistent, so I have to rely solely on mildots....which I'm not very good at yet. Takes me 4-5 shots to get that crap right. What's the point of having cool target turrets if you can't use them?
The Hammers 3-9x40AO was the shortest lived of the bunch, it was still holding zero but something started rattling around in it after 100 shots and then it started fogging up back when it was colder than a witches tit. I didn't even want to try another one so I took the refund.
I've learned how to make them hold zero by shimming the back mount as much as possible, which (once zeroed) creates more spring tension on the inner tube and keeps everything in place, at least until parts start flying off of them.
I added yet another shim to the Simmons today and brought it back to life....for now.
My best scope so far is a Bushnell AR but that sucker is so heavy that it makes my fairly light weight break barrels feel top heavy, and that bugged me so badly that I took it off and am saving it for a possible PCP or a .25 someday.
I'm sure that the reason I've had so much scope issues is simply because I am doing ALOT of shooting. I mean if you saw the stacks of empty pellet tins I have aquired you'd be like "Holy Crap!" But hey, I'm trying to get genuinely good at this game The average plinker could probably get along fine with any of the scopes I've trashed.