This increases ball speed as the face can be thinner across a larger area. ![]() So why are they longer? Well, it is all down to the 360 Face Cup which comes from Callaway's woods and allows the weld line to be behind the face rather than on it. Comparing it to an iron that was launched two and a half years ago is, well, let's just say the marketing team earned their money on that one. So yes, for me the Big Bertha irons are around a club longer than Callaway's last cavity back iron. They are, but the standard Big Bertha shafts are a quarter of an inch (6mm) longer, which is negligible. When we posted these results on the Golfalot Twitter page we were asked if the lofts of the two sets are the same. Unsurprisingly there was not one around at the Performance Centre, so I tested it on Trackman against Callaway's most recent game improvement iron which is the X2 Hot.Īfter a bit of warming up I did manage to get the Big Bertha 7-iron to go almost as far as the X2 Hot 6-iron. The benchmark Callaway are using for their claim is their RAZR X HL iron that was launched in February 2012. ![]() Let's forget the technology for a while and go straight to testing at the Callaway Performance Centre in St Andrews where I was able to test the Big Bertha irons on Trackman the day after they were announced to the world. So Callaway claim the Big Bertha irons are 2 clubs longer? Well, I had to check that out.
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