No , haven't chronied it because I don't have one. I usually send my airguns to a guy named Ernest Rowe but I called him imediately after and his number was disco so I looked around to see if I could see any topics about this and what do you know , nothing not one topic about this noise . So I asked the question and got back the feedback that I thought that I would . I don't really tinker on my guns at all . I send them to the guys that know what their doing . I tell them what I want , pay them and shoot . I absolutely do not trust myself to adjust, fix,tweak anything on my airguns . I know my limits . I just didn't like the automatic response that I got from the guy ,especially when you pay a lot of money for a brand-new gun and you call in polite just wanting to be handle with respect and courtesy . Don't know what the deal was but at this point it's being sent back and replaced . I didn't feel like they really appreciated someone choosing them and spending money with them . May not go with them ever again to purchase guns . I have purchased about 6 guns from them and when there was an issue same kind of response and treatment . And there was only one other incident and that was with a compressor not even a gun . But , like I said it's going back and I'm getting a new one . I wish I was mechanically inclined or I would do at least some of the things that I pay money for .