We apply similar forces onto the golf shaft with all our full swings. Thus, matching shaft profiles on all your clubs is a perfect place to start your shaft selection journey. It is not 100%. However, in the thousands of golfers I have fit over the years, there is a definite commonality of profiles in irons and woods.
This is for one reason- we apply similar forces onto the golf shaft with all of our full swings.
You found an iron shaft model that works well for your swing which has a stiffer butt and mid-section, and softer tip section. If you look at your driver shaft choice from the opposite perspective- should you purchase a driver shaft with a softer butt and mid section and stiff tip section? Hardly! You could try dozens of shaft models and weights and flexes like this, and adjust your head and build specs in every conceivable manner, and you would wind up wasting a lot of money and time, and have a frustrating driver experience.
Instead - think about your driver shaft in terms of a stiffer butt and mid-section and softer tip, and start there. Of course, you need the right head, loft, length, shaft weight, shaft flex, etc, but if you understand that we all apply similar forces to the golf shaft on our full swings, you will get to a happy driver place.
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