Novice question alert:
Is swing weight calculated as the total physical weight of a club? If so, how does adding a counter weight and increased head mass = less or same swing weight?
(I can try to clarify that question if it doesn't make sense to anyone not currently residing inside my noggin)
Swing weight is a combination of the center of mass of the whole club and the mass of the club.
If you take a 200 gram club that is D2 and put 10 grams on the head you will gain 5 SW points, or D7. Take the same club and add 10 grams to the grip and you will loose 2 points or D0. Both have the same mass, but very different swing weights because of where the mass was placed.
DB