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Certified Grain Scale On Site Lubbock, TX Est. 2017
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Shaft Weight Lab South Plains Shaft Mass Studio
The Gram Log

The Gram Log

Notes from our bench — practical explanations of the weight numbers that actually shape your timing, feel, and ball flight.

Gram Stepping a Set Without Touching Flex

How to build a consistent weight progression across a full set while holding flex constant club to club.

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Transition Tempo and Shaft Mass

Why the speed and shape of your downswing transition matters more for shaft weight selection than your swing speed alone.

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West Texas Wind and Shaft Mass Selection

How steady South Plains crosswinds change the case for a heavier shaft class, even at identical swing speeds.

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Overweighted Driver Shafts, Explained

Why some fast-transition players benefit from a shaft heavier than their swing speed alone would suggest.

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Mass-Matched Irons Across a Blended Set

A practical approach to fixing shaft weight inconsistency when your iron set was pieced together from more than one source.

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Reading a Gram Scale Versus a Flex Board

What each instrument actually measures, and why a fitting cart needs both instead of relying on a deflection board alone.

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Put This on the Scale

Reading about weight fitting is a start — seeing your own shaft numbers on the bench is where it actually clicks.