i too was thinking attick , as its a bare brick wall there, no studs,plasterboard and skirting board to feck about with, filled in both forms today, still undecided as to what calibre to put. im defintely putting down for a .223. a 12g, Fac air. and .17hmr OR .22lr. all the videos iv seen and heard people shoot the .22lr out to , doesnt really give me any benefit over a bloody airgun though, as a sub 12 can be pushed to 70yards. but i do have large open permission also, which is almost impossible with an airgun lol and it is good land.