100% the shroud and bottle are touching in one place, I will loose the pressure and see if the bottle will turn very slightly to give a clearance.
It is the carbon fibre (hi-lite) bottle, its bloody awful when you run your hand over it, lumps and bumps everywhere, so a slight turn may sort it.
It was bought privately, not from a rfd, sold as immaculate and 100% faultless, he was right about immaculate, but certainly not 100% faultless.
I have also had another guy shoot it who I know is a good shot, he regularly hits 5mm targets at 70 mtrs, he gets the same results, I just wanted to confirm it wasn't me doing something or my shooting gone to pot.