Ok, found some new info:

"If you don't want to shoot lead through your Glock, then use the 200gr FMJ. It REALLY penetrates deep. I have shot more than 20,000rds of the Beartooth bullet through my Glocks with no leading issues and we have sold many more thousands to the public. No one has complained about leading. The hardness of the bullet combined with the gas-check on the base of the bullets really make it a non-issue."
-Mike

"TWO HOLES BLEED BETTER THAN ONE!"
www.doubletapammo.com
For the 10mm enthusiast!