Boron was introduced in to Mizuno’s line of irons last year with the JPX-850 Forged Irons.
Boron was mixed in to the metal to make the steel harder to be able to make the face thickness thinner for more ball speed off the face of the irons.
Now there is MP-25.
Boron infused MP irons.
Still a grain flow forging process.
Curious to see how a MP iron would feel with Boron.
With the new MP-5 channelback irons introduced which looks to be much more playable than a traditional muscle back irons, more better player will move to the MP-5 and average players will play the MP-25 irons for the added distance while enjoying the player profile and performance of the MP series of irons.
going to be an exciting fall.