You wouldent get permission here to shoot deer with an 8 bore and solids. The same goes for the big nitro's. ( because of backstop)

Once you use or possess solid ammunition it becomes by virtue of our firarms act, a section one restricted firearm just the same as a rifle.

You could just about get one on a certificate as a target rifle !!

I incidentaly, have the only 450#2 NE target rifle in London.