Press or floating pin?
I like at least .0010 or more pin clearances, even on the Chevy .990 pins, on all my pins to piston and rods on floating pins up scope
I haven't seen a super fine finish on any of the pistons I've bought and had pin fitted in a lot of years, no problems with them either, unlike the early TRW and Speed Pro press pin pistons sticking the pins rant

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)