Pellet always remained in barrel at first attempt.

Generally but not always exited on second CO2 burst.

I could hear the gas passing the pellet confirming the flare was not sealing.

On the chronograph greens tested slower than a lead pellet confirming ineffective seal.

Pellets tended to tear the target so were tumbling.

I put one green pellet through the Gamo Magnum (29 ft/lbs) and definitely supersonic.

The 100% lead free has a cost.

H&N FTT Green $35 per tin (200) = 17.5 cents each

H&N FTT Lead $20 per tin (250) = 8 cents each

I found the Green pellets cleaned or stripped the bore requiring leading in of subsequent pellets.

At greater distance the accuracy quickly deteriorates.

With higher shot counts the accuracy deteriorates.

Tin is labelled "For PCP rifles only" and I have requested an explanation from H&N.

Web site has the green alloy containing tin, zinc, iron and plastic.

25 yards indoors practice session, inward scoring 4 shot groups with measured OD.

Mixed results and not competitive with several other springer users shooting 200's.

POA centre with no correction, the lighter pellet may actually need a different rifle or technique.

I will check at higher velocity and undertake chronograph checks.

I picked up one of these on Ali Express for around $160 mid September.   More details can be found in this link

https://www.youtube.com/watch?v=WpHqODLBd0w

Because I wanted to use this on one of my air rifles at under 30m, I went with the 16mm lens that gives 5x maximum magnification.  Overall I'm not impressed with this device.  I cannot get the diopter adjustment clear without using my glasses.  Neither day or night mode is quite as clear as the video above but it is adequate.   As you may have noticed in the video above, both the charging port and the micro SD slot are not covered which would require taping up to provide some protection in anything but clear weather.  

I fitted one of these adapters  to the existing dovetail to mount this on my rifle

https://www.trademe.co.nz/a/marketplace/sports/hunting-shooting/scopes-sights-mounts/mounts-rings/listing/5648895571

Even with is as far back on rifle as possible the scope was not far enough back to be able more than half the screen on the night vision scope.   The depth of field is quite limited so when scanning different ranges, you have to keep refocusing the image with the front lens on the scope which is a pain when mounted on a rifle.

I ended up putting the original scope with a torch back on the rifle and using this device purely as a spotting scope which worked OK.  I can get away without glasses when using the night vision just for spotting which is a little easier than having to keep swapping as my scopes are set up for using without glasses.  Also even with the minimum brightness on the night vision it ruins my night vision so I need to use my left eye for spotting to then enable me to quickly target with my right eye and the scope on the rifle.  For the possums  I was targeting I am able to see the chicken feeder from my kitchen window which means I can check this from  inside and then sneak out when spotting activity.

While this has worked OK as a spotting scope I would have been better off simply buying a night vision monocular than this device.