My nephew recently bought himself a full size 150lb crossbow.
We tried it out in the brother in law's back garden


The first bolt went through a 3/4" chipboard table top, a 1/4" sheet of ply and a half inch thick fence board, coming to rest when the flights caught in the hole

My first attempt missed the target completely and hit the concrete block wall below the fence. The bolt ended up s shaped.

This thing is ridiculously powerful, costs less than £100, and can be bought by a teenager. Why they bothered to restrict airguns further under the VCR act I don't know.

Now, where did you say you bought it Tom?