Actually in some states it is illegal to use lead bullets for hunting.The reason is because animals eat the carcass and get lead poisoning.
Also no lead means bullets that have steel cores and jackets or plastic jackets or copper jackets copper core there is little difference in effect between lead and non lead generally speaking in ballistics.Somtimes lead is more likely to fragment into little bits which is not always as good as it sounds for game that you plan on eating it is lousy.A bullet that stays mostly whole does more damage armed forces must use full metal jackets against humans lead FMJs can still fragment which is actually bad for a bullet not designed to expand.A non lead 5.56mm round would stay whole and do much more damage.I'd rather have a bullet destroy one section of tissue than fragment and hit lots of tissue but allow the guy to keep fighting fragmentation being very common with the 5.56x45mm anything that reduces this is a good thing.
That Swedish company must have been morons and did not test the product.
By the way the DOD uses bio jet fuel.
http://www.defense.gov/news/newsarticle.aspx?id=58528
http://www.manufacturing.net/news/20...l-with-butanol