I just done some googling and read that lead is No2 on the USA toxisity list. So you better get used to the idea that it WILL eventually get a total ban, as in UK.
I read up on the common metal elements that we probably have access to.
Lead, nickel and zinc are toxic. Even if not banned, what is the point.
Copper melting point is beyond our reach, at 1084C.
Tungsten powder, mixed with a polymer binder (I guess resin would do the job) Would give a density comparable to lead. The down side to this would be the extra labor involved. Not sure of the cost or vailability (lots of adds).
Tin. pours well (tin soldiers). Density 7.28gm/cm3 (lead is 11.34gm/cm3), so will take up more space, a problem for balsa builders. Low toxisity, low melting point at 232C, compared to lead at 327C. But the price was approximately 9 times that of lead. But to put this into perspective, 1/2 oz would be $0.20 approx.
I have not looked into alloys. At what point does lead in an alloy become safe, if ever? Does the bill cover this point?
Dave