You think lead bullets would still be legal if they had gotten all the way down to primers?
Cutting of lead from bullets should be considered an act of war, why, California and Washington already have a Copper ban in play because it is "poisoning the water."
So your copper bullets are going to go bye bye real quick too.
Banning of lead should be a bright line in the sand.
Oh, and about anything is toxic to you in the right concentration, heavy metals, even table salt can kill you, before we decide we need to head down the "look at this study" road.
I'd swallow a lead hardcast from my 500 S&W and have zero worries about it affecting my health.
Let them ban lead and get ready for all the horrible copper studies to come out, brass, etc... like noted, Cali and Washington already have copper on the "one foot out the door" program.