So I was reading the rules of the sales section...
I might have got it all wrong. But as I understand it, fully automatic "air weapons" are limited to 1j, which is 370fps(?). Semi automatic air weapons are limited to 7j before you need a license for a rifle and pistols are banned. Hence 450/500fps, which is considerably lower than 7j would not be legal limit at all? So yea... have I misunderstood something?