They both have Fujikura Six S flex tipped 1 1/4'. My R300 Tour just leaves the face faster than my TP. I play a high Cor driver because it is 'legal' here as well. I bet at a higher SS or a better combination of shaft -head-loft it could be bigger. on the same head/shaft but different COR values is there a difference.You answered it on your first part for the combo and the swing speed that was tested by your Federation is was 10 yards.

'The right shaft and loft makes more of a difference'. You say it makes no difference yet you say 'if hit in the sweetspot high cor drivers were maybe 10 yards longer BUT if it didn't hit sweet spot the high cor was sometimes 10 yards shorter'. The right shaft and loft makes more different. If hit in the sweet spot high cor drivers were maybe 10 yards longer BUT if it didn´t´hit sweet spot the high cor was sometimes 10 yards shorter! The sum was that maybe most amateurs really don´t use the benefits of high cor drivers. The swedish golf federation made a test betwen 0.83 and 0.86 driver in a robot machine called 'iron byron'. Below are two screenshots from the respective resources.Well i´m living in Sweden and plays the R7 max and I can say that 0.86 cor really makes no different. This shows that both versions of the club head are totally legal to use.

To be more specific, both the Randa Golf Equipment Explorer and USGA Conforming Club List include the R580 and R580 XD in their ‘conforming club’ section. Both of these drivers conform to the equipment rules, which make them legal to use for any golfer in any tournament.

Is the Taylormade R580 illegal? According to and, the Taylormade R580, R580 XD, R580 Tour, and R580 TP are legal to use in any casual, amateur, high-level amateur, or professional tournaments. I decided to take a look at the USGA’s and Randa’s equipment rules to figure out if this club is in fact illegal. Since its release, much has changed in terms of equipment regulations, so it begs the question, is this club illegal? However, recently, many golfers have been discussing the legality of this club. It quickly gained fame as Mike Weir, PGA player and professional golfer, won the 2002 British Open and PGA Championship. The R580 was a part of TaylorMade’s 500 club series released back in 2002.

Non conforming golf drivers list