Pistons specs question for 340 build

Nat said
the weights were all over the place as well . took a lot of work to get those old TRW pistons to weigh the same

Catalog says plus or minus 10gr for the flattops, plus or minus 4gr for the domes, and plus or minus 4gr for the pins.
Edit: just for gjggles i ran the numbers on those 340 trw's. Supposedly around .050 out of the hole. ???