These vare the 40cal,they are similar to the 50/40 200gr Shock Wave but 20 gr lighter. I have not checked the Sectionaldensity yet . Yes they are Speer Gold Dot ;I am thonking about trying them ,Iwish speer made them in 200ge as every 200 gr 40 cal I have tried has shot well with heavy loads. I thought maybe Sabotloader would have tried them as he is usually one step a head of me.Lee