I like the look of them especially for pesting work though.

Madmax, did you get a solution? Does the tank screw off? maybe it has unscrewed and the valve had shut off so the gun won't get any air out of it???

If you can take the tank off, you could try that and then try firing it. If no luck can you then loosen a gauge to let out pressure, retighten, then attach tank again and see if that does anything.

Paul.

Too early for me to give any feedback on grouping at any real distance (I'm still mucking around with scope setups and only shooting at 10m).  There are plenty of positive reviews on Youtube, the only negative one I could find was a guy who refused to do a review after the distributor asked for it back earlier than he would have liked. 

Perhaps you're getting me mixed up with with Madmax who has the issue with the M2?

Me, I've really only been playing around seriously over the last 6 months after having had a Gamo springer for a few years prior that I hardly used (rooster control mostly) as it was hopelessly inaccurate. 

After selling it and getting reprimanded by my wife for doing so, I've gone down the rabbit hole big time and purchased 6 airguns (1 was my M2 PCP, with another PCP on the horizon) over that 6 month period and a number of scopes as well.  All of those guns have grouped best (as they could, because most were hopeless - Gamo, Stoeger & Bejamin) with JSB Exacts.  I've since sold these cheapies and done some dough in the process, but it's a journey and travel costs money!

The little Cometa Fenix 400 I bought for my wife is super accurate and I have a tin of JSBs with my wife's name on it so I now she'll be on target when she uses it.  Me, I play around with lots of different pellet types, something I really enjoy even if they aren't as good as the JSBs. 

The scopes.  I have an Athlon Talos and a couple of Tascos.  I was planning to purchase a Hawke for the PCP to replace the Athlon and somehow came across the Vixen. The fact they're made in Japan grabbed my interest and I ended up buying one even though it was a little more expensive than the Hawke.   I'm really blown away by the clarity of both the the reticle and the glass.  Super impressed!

Interestingly, I wear progressives and have been taking them off to shoot which is a pain because then I can't see the pellets when loading and try to put them in backwards sometimes.  However, with the Vixen I'm shooting with my glasses on and not having distortion issues as I was with the other scopes.  The eye relief is also quite a bit more and the range of that relief in which I get a perfectly clear view is also a lot more for some reason.

I also have a Hawke red-dot site which is currently fitted to the Cometa and the same thing applies (no magnification though).  Makes sighting really simple for the wife with no adjustments required if I've been using it, which I do because it's a very cool little rifle - thanks Ron!

Lastly, I'm lucky enough to have a big shed that allows me to shoot indoors at 10m whenever I feel like it and if I take an interest in anything, I always watch a ridiculous amount of YouTube to improve my understanding as best I can