See the add for this it might be worth clearing up a few things.
It isn't an R10. The reg is entirely different. Tench is reckoned to have been involved in it's design and it is rather different to the R10. Still uses the ball and O ring high pressure seal but HW do too.
The power mentioned in the listing is with 8.4gr pellets. BSA often rate power with more like 10.5gr and as usual with pcp's power goes up with pellet weight.
The low figure and some variation when a gun hasn't been shot for a while even a short while isn't that unusual even on PCP's
Ok I have just bought a new one. I can add to that going on 2 I looked at. The walnut which I bought weighed in at 3.5kg, checking a laminated stock and it came out at 3.25kg. Both are light for this style of gun. More usually 4kg plus.
Match style trigger action but my single shot one isn't set as the multishot laminated one I tried
so need to sort out which screw to twiddle to reduce 1st stage travel. The laminated one was pretty impressive.
to me anyway.
So maybe I am biased but don't confuse it with the R10.