Thanks Jay . . .
I am stroking 3/16 with a Hi-Torque crank. The pistons are custom built from Ross. I expect them all to weigh the same . . .
I would weigh them too . . . but I had them drop shipped to the machine shop so the machinist could final hone the bores to Ross' spec and directly measure clearances . . . the shop wouldn't have it any other way.