Mass
How far behind the face the quiet lives
A mallet is a rear-mass argument. Shallow CG lets you work a ball. Deep CG steadies a pushy start. Catalogs sell “stability” as if it were a personality. Depth is a measurement.
Moss marks depth with a caliper from the face plane to the mass the head actually wants to rotate around. Two mallets with the same stamp on the cavity can disagree by enough millimeters to change the first hop. A deep CG keeps the face from flipping through a short miss. It also refuses to let you hook a putt you thought you could “work in.” Midtown bermuda already works the ball. Adding hand-curve on top of grain toward the bluff is how a four-footer dies on the low side.
Shallow CG feels lively. Players who grew up on blades sometimes demand it. If their arc still wants rotation, a deep block will fight them. If their arc is quiet, shallow CG is a gift they will spend on Overton’s grain. We would rather they spend it on purpose.
Depth without a launch-monitor sermon
We do not need a radar trailer to feel a hop. Twelve feet of carpet will tell you if the ball wants to climb off the face or sit down. Deep mass usually sits. Shallow mass can hop, then catch grain and wander. The bay note on CG is the longer version of this quarrel.