All the equipment needed (tools) will cost 3-5X as much for the 50BMG.
The consumables will cost 3X as much for the 50BMG.
Most ranges do not allow a 50BMG or if they do,they have different rules for the 50BMG.
Shooting a 50BMG you need double hearing protection. Plugs and ears both.
Due to the overpressure and blast,you should make sure that nobody stands besides you. Everyone should stand in back of you.
Good Luck. --- SAWMAN