Reason why bullets kill discovered

I actually couldn't believe what I was reading when I first saw an article that appeared in the Sunday Times recently stating that BAE Systems were developing environmentally friendly lead free bullets!

BAE systems have stated that after intense warfare traditional bullets "can harm the environment and pose a risk to people"..........Eh????

Does this mean that its not actually the ripping and tearing of flesh and the shattering of bone as bullets fly through our bodies that causes the untimely departure to the great beyond but is instead a sudden dose of lead poisoning?

"Oh, sorry pal I didn't mean to shoot you in the head but its okay, they're lead free bullets, you'll be fine"

If that's the case why don't we just bin bullets altogether and go to war using Super Soakers that way nobody gets hurts, the battle zone will get a good watering and everyone ends up with a nice flower bed in springtime.