Mons is about the only range you could access, through the ORA that is long enough to play with a .50 at extended ranges. Hardly any point in shooting a .50 at shorter ranges, except to make noise. Connaught is not templated for .50.
Almost bought a .50 when I lived in the Eastern Arctic. One of the few places where a .50 could be taken out for safe recreational long range plinking or even hunting, without the risk of attracting unfavourable attention.