by Justin Pahl
Mizuno dropping a new iron line is always an exciting time in the golf world. With the release of the new JPX 923’s, Mizuno has every level of golfer covered. From the elite ball striker to the weekend warrior, there is now a Mizuno iron model for you. The biggest addition that they made was adding in a third Hot Metal iron, the JPX 923 Hot Metal HL. A very forgiving iron that has a slightly lowered center of gravity and weaker lofts. This model is going to be a game changer for players looking for forgiveness that will still produce more spin and steeper landing angles.
Now we can’t forget about the JPX 923 Hot Metal or JPX 923 Hot Metal Pro. These two models have been the workhorse for Mizuno for the better half of a decade. While consistent with their recipe using the Chromoly metal in the three hot metal irons, a new blend is now on the scene. The new 4335 Nickel Chromoly is 35% stronger than the previous generations while offering an 8% thinner face. This creates a larger sweet spot with consistently higher ball speeds. Needless to say these irons are little rocket ships. Since they made the face thinner, they still wanted these clubs to feel like a Mizuno. To do so they changed the shape of the chassis to create a more solid and satisfying vibration pattern. All I will say is that they still feel very much like a Mizuno.
The JPX 923 forged and tour are not released yet and I haven’t been able to test them so there will be more information coming early 2023.
Now the fun part, let’s look at the numbers. I tested all three using 7-irons with Dynamic Gold X100 and hitting Taylormade TP5 golf balls. I hit 10 shots with each, here are the averages:
|Model||Ball Speed||Smash Factor||Launch Angle||Spin Rate||Carry Distance||Apex Height||Landing Angle|
|Hot Metal||136.0 MPH||1.41||14.3°||6370 RPM||195.6 YDS||110 FT||49.0°|
|Hot Metal Pro||133.9 MPH||1.40||14.8°||5892 RPM||194.9 YDS||109 FT||48.5°|
|Hot Metal HL||132.5 MPH||1.38||16.8°||7039 RPM||186.8 YDS||118 FT||51.1°|
As you can see the Hot Metal and Hot Metal Pro are faster but this is expected since they are stronger in loft. Both Hot Metal and Hot Metal Pro produced very piercing ball flights that the wind does not touch. Hot Metal HL launched higher and spun more which created a higher peak apex and a steeper land angle, all while being efficient and fast off of the face. So what Mizuno has done is add a perfect addition to an already elite iron lineup. These irons are definitely worth looking into if you’re in the market for new irons.