FirstFreedom
Moderator
No problemo. Yes, I'm in USA. No, I don't know anything about Gamo scopes good or bad - they could be OK. Your problem may just be poor quality rings, or possibly the scope is broke (won't hold a zero). The Gamo air rifles seem to be a decent quality for the price, but dunno who makes their optics, or how they are. I'd suspect not-so-good. BTW, I have currently the model 350 RWS, and it's wearing the Burris compact 3-9x32. It's not a bad scope for it's purpose, but not really too clear from 6 power up. But I generally keep it on 3 or 4 power anyway, so it works well for my purposes. Good luck!
PS. Oh yeah, ideally, you'd get rings specifically for the 11mm rail as opposed to rimfire rings for a 3/8th inch dovetail (which is 9.53 mm). But the latter will work in most cases with a little less tightening than what is expected for the rings.
PS. Oh yeah, ideally, you'd get rings specifically for the 11mm rail as opposed to rimfire rings for a 3/8th inch dovetail (which is 9.53 mm). But the latter will work in most cases with a little less tightening than what is expected for the rings.