I have some of it, it seems like good stuff. I'm pretty sure it's the exact same thing as their PDX1 180gr bonded except it uses regular brass instead of nickle. Mine also has some red sealant around the primers.
They remind me a lot of the 180gr Gold Dot in expansion. I have some PDX1 and the white box variety like you have and it's good stuff for sure.
"There is a principle which is a bar against all information, which is a proof against all argument, and which cannot fail to keep a man in everlasting ignorance – that principle is condemnation before investigation."