On golf club graphite shafts, what difference should one expect when using a 40, 50, or 65 shaft.?
40, 50, 65 are the weights. so you should expect 65 feels a bit heavier that the 40. A golf shaft must match to your golf swing. Including your swing speed, tempo and those swing data. You can't second guess when buying a golf shaft. when selecting a golf equipment specs, such as driver loft, shaft and length, one must get custom fitted at a qualified fitting studio. A launch monitor will show your swing data and ball trajectory. From there, the custom fitter can find a perfect shaft for you.