I can't stop thinking about the possible ramifications of the lead dust in the soil and water.
We know that lead dust and vapors are created by the ignition of the primer, exposed bullet base vaporization, friction between the bullet and the barrel during firing, and fragmentation of the bullet upon impact with a hard surface.
Obviously these can be mitigated somewhat by lead-free primers, TMJ or enclosed-base ammunition, and even lead-free bullets.
Those options not-withstanding, were is all that lead dust going? Is it not settling into the soil (outdoor ranges) or being tracked out of the range into cars, homes, yards, etc... (indoor ranges)?
It never "goes away", it just moves around (basically). Isn't it just sitting out there to get inhaled (once stirred up by any of a number of mechanisms), eaten (primarily by small children who put their hands in their mouths all the time), or drank (if it gets washed into the water supply by rain, irrigation, etc...)?
We might say, "It's such a small amount, it doesn't matter...", but when millions of people are shooting on a regular basis, it becomes more than a "small amount" rather quickly.
I am not bashing shooting and I'm not an "anti". I own a handgun. I really like the act of shooting. Unfortunately I'm unable to enjoy shooting because of this issue. In fact, it has caused me significant distress, well beyond the realm of shooting. I have a beautiful baby daughter. I can't live with the thought of lead that I "put out there" hurting someone else's child in such a major way (impaired cognitive development and the numerous other maladies associated with lead ingestion in children).
Maybe I've completely blown the issue out of proportion, but regardless it is something that everyone needs to be aware of and at least make an educated decision(s) about.
Stay safe and take care.
Also keep in mind that lead actualy comes out of the ground to begin with, and in ores where it is very close the same material. It doesn't just come from the ground, but it already present in various ores in high concentrations many places without ill effect.
It has rain water fall on it, that rain water goes to rivers streams and lakes. It is naturaly occuring and in large amounts.
In fact there is many locations it occurs naturaly throughout the United States, just not in the types of ores that are commercialy desired for processing, in dense quantities. So they just leave it there and mine in better locations in the world. (there is some mining, but there is many more unmined locations not seen as commercialy viable.)
The mining process really stirs up tons of lead. It gets moved hauled, crushed and dust and particles are numerous. It can create dangerous areas around such mines. Yet a short time after mining operations cease the problems go away. It is not a persistant toxic chemical. Other minerals bind to it in the environment and it becomes part of the earth again.
The main concerns you hear about is with birds because they have a gizzard. Birds swallow gravel, rocks, (and a lead pellet is a rock to them) and other items and then use them to grind up food in a muscular sack like organ. They then use strong acids on them. So they end up with powdered lead, then saturated in acids. That leaves very large surface area and lead concentrated solutions. Birds are also very light boned animals, and very susceptible to many poisons (hence the bird used in mines of old.) In fact just putting a Tefal (non stick Teflon coating) pan on the stove and heating it can make poisonous fumes that will cause a bird in the room to drop dead. Yet while it is probably not good for you, people do it all the time without ill effect.
So very high concentrations of lead in a very small, light weight, and susceptible animal causes problems.
Lead is however much safer than most ballisticly effective alternatives. There has been a lot of evidence showing many lead alternatives like tungsten (used in hevi shot and many others) is actualy many times more toxic than lead. So all of that time and effort spent to deviate from lead may be putting as at even more risk.
Current laws don't even allow most alternative affordable metals to be employed in handguns. They become "armor piercing" projectiles outlawed at the federal level.
As for primers. Well many new lead alternative primers work well. The shelf life however is much lower. I would much rather trust my life to something like lead azide that has been sitting around for years than to most lead free alternatives.
Making ammunition less effective or less reliable over some percieved but easily managed risk is silly. People only live so long as it is, and many people near that age have used lead products all thier live's.
As for other people's kids, well all I can do is patronize responsible ranges and help get the word out on potential lead issues in the RKBA community.
Well the end result is just going to be much less effective and reliable ammunition. It will also increase the price of ammunition dramaticly, and give antis yet another tool in thier efforts to restrict it, as they are already doing in CA (to save the condor.)
As for conservation? Having one kid less (while third world nations have many and then immigrate here to displace you and your genes anyways) would conserve more of nature than not shooting millions of rounds of ammunition
A lot of lead in your diet can help to achieve that
So bottom line is most effective dense materials cost a lot more, and many of them are more toxic than lead. Heavy metals are usualy toxic, lead is one of the least toxic. Bismuth would work and be less toxic, but bismuth is mainly produced as a byproduct of things like lead production, and it costs much more. Bismuth hit $19 a pound in june 2007. Most people were complaining because lead went over $1 per pound and set an unprecedented price in ammunition.
Bismuth prices would be even higher if there was as much demand for it as lead.
What are you going to do if your ammunition costs 10-20 or even adjusting for increased demand perhaps 30x more than it does now? It is also not that malleable and so expansion is much less.
You know if we all just shot gold and platinum bullets no danger of toxicity would be posed to anything and they would be effective. Perhaps we should try that.