Originally Posted by melw
How about the other way around. My father in Tx. sells me a pistol not on the list. Can it be transferred to me here in Ca?
Yes, the direction (father->son, son->father) is irrelevant.
family-exempt parties are grandparents, parents, children and grandchildren. Brothers/sisters, aunts/uncles, cousins, great uncles, etc. are not eligible for the interfamily exemption.
A grandchild can give/sell a non-Rostered handgun to his grandma, or a daughter can gift a non-Rostered handgun to her dad, or vice versa.