Compared to the more compact sister Callaway XR Pro iron, the standard version has a shiny chrome finish rather than the brushed chrome and both look good. The two white lines on the bottom two grooves are classic Callaway and make lining up the club easier. What is new with the XR irons is that they have managed to do this within the framework of what looks like a classic Callaway distance iron with a visible cavity in the back, which is no mean feat given the narrow sole width they have to work with.Īt address there is a medium amount of offset and a thick top line just like the X2 Hot iron it replaces and I think it looks very good for an iron of this type. However this came in a hollow, closed cavity design that was on the bootylicious side. Now Golfalot aficionados will know that all this is not new as the recent Callaway Big Bertha irons featured the Cup 360 and the Internal Standing Wave. This is effectively a line of metal looking like a breaking wave that moves the CG lower and forward and increases the MOI, but stands alone and does not touch the face. This allows the face to flex at impact and increase the ball speed so you get more distance, just like they do in the excellent Callaway XR Driver and Callaway XR Fairway.Ĭallaway has also used the Internal Standing Wave from the woods in the sole of the club. The Cup 360 is a single piece of thin metal for the face that wraps around at the top and the bottom and then is attached to the rest of the chassis by a thin piece of metal. Not any more though as Callaway has brought their face cup and internal standing wave from their woods into the XR irons, but in a form that looks like a normal set of irons right through the set.
Usually you end up with a closed, cavity back iron and to date most of these attempts have resulted in irons with plenty of 'booty', as I believe certain R&B singers call it. For some time the goal in distance irons has been to bring the technologies from woods into irons to increase distance and forgiveness by using a flexing face with a deep centre of gravity.
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