A couple of weeks ago, I visited Fort Nelson, one of a string of fortresses built on Portsdown Hill, the high ground overlooking the naval base of Portsmouth on the south coast of England. The fort has been restored and now houses part of the Royal Armouries' collection of artillery through the ages.
These forts built in the 1860s were designed not to concentrate fire onto attacking warships in the harbour below as I had thought, but to guard against a landward invasion by the tricky French who, it was thought, would land down the coast, take the high ground and then lob shells into the naval dockyards below. As they never fired a shot in anger and because to the public their guns were 'pointing the wrong way', these forts have since become known as 'Palmerston's Follies.'
On the tour the young woman guide took us into one of the powder stores and pointed out a stack of powder barrels each of which was marked '100lbs'. When I told her that at the present day price that I have to pay for the cheapest black powder, each full barrel would have cost in the region of £2,000 ($2,700) she was shocked.
No wonder live firings at the fort are few and far between.