BrentD,

The impact on raptors collectively is significant. I don't have my data sources handy but the Peregrine Fund (a conservation group founded by hunters/falconers) has studied it and fostered a lot of scientific symposiums to explore the issues.

In short, there are a lot of raptors dying of toxicity, most frequently in Western states that have lots of varmint hunting. The raptors most impacted are Golden Eagles, Bald Eagles, Furruginous Hawks, and other plains species of the genus Buteo.

Vultures and Ravens are also impacted for the same reasons.

Of the about 300 california condors in existence, more than two dozen had high lead levels and some were fatally wounded by lead toxicity from refined, munitions lead attributable to gun hunters. (the lead recovered was refined, had antimony or other alloys in it, etc)

peregrinefund.org has some great info and an xray photo of a deer gut pile. You can't believe how much lead fragmentation occurs. All it takes is a sliver, a few grams of lead, to kill the largest raptor. (keep in mind a large female bald or golden eagle is only 9-11 pounds...doesn't take much lead to kill such an animal)