Are the new grooves capable of producing as much spin as our old beloved square (and now non-conforming) grooves? Could the hoopla surrounding the 2010 groove rule have been much ado about nothing?
It's certainly worth looking into.
We had two golf professionals test new conforming grooves against the older square grooves, and the results suggest that, from fairway lies, grooves actually don't make a heck of a lot of difference!
Test Objective and Conditions
Here is what was tested and how we went about it:
For this test our objective was to determine what, if any significant, difference exists between the current USGA legal C-C (condition of competition) grooves and the old (non-conforming) square grooves from fairway lies.
Our test conditions were as follows:
- We used two almost brand new 56 degree clubs with near identical specs. The difference between the two was that one had C-C grooves and the other had square grooves.
- Two golf professionals hit 15 shots each from 3 different distances with each club. Data from the best 12 shots (24 shots per distance) was used for the calculations.
- The measured distances were 25, 50 and 75 yards and the objective was to carry the ball to that distance.
- All shots were hit with premium golf balls except the shots hit from deep rough.
- All shots were hit from a tight mat so as to limit outside factors interfering with friction between the face and the ball.
- As a point of interest each tester also captured data on five 50 yard shots from the rough with each club.
- The Results