This is much faster than the allowable Rpm s for most sports cars. This means a 7-oz. Just prior to impact, centripetal accelerations can be as high as 100 g s. This makes the 7-oz. This is perhaps one reason why people decelerate the club just prior to impact.
Many people think, on the contrary, that they are accelerating the club just prior to impact.
We have not been able to find a single person who accelerates a club just prior to impact. The fact is, the clubhead is slowing down at a small rate just prior to impact.