Its not a bonded bullet, just an electro plating to prevent lead build up when used in pistols
I had no idea people were using the PT Golds in CF pistols. I would love to see a link and look at their results.
http://www.explainthatstuff.com/electroplating.html
I appears they use a similar process as Speer which is considered a bonded bullet. Electro plating is basically bonding two metals together. Speer just uses a much thicker plating on the DeepCurls.