Pistons specs question for 340 build

33IMP said
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. ???

4 grams sounds about right , had to take between 1 to 3 grams outof the pistons to get them right , they were 12.5 440 pistons