Their real objective is to outlaw all private sales of firearms, not just at gun shows. They want all transfers (even family member to family member) to only be thru licensed dealers, who will dutifully record all the info and forward it to the feds
Makes confiscation at a later date much easier
North and West of Mojave is the place to blow off rounds in the desert. Don't venture east. The Air Force creates big holes there. Somebody told me those holes became swimming pools for birds and snakes recently. I don't know how things live with all that carbonate and hydroxide there.