Mizuno JPX-800 Pro vs Mizuno MX-300
Side-by-side factory specifications. Differing values are highlighted.
Specification comparison
| Club | JPX-800 Pro loft | MX-300 loft | JPX-800 Pro lie | MX-300 lie | JPX-800 Pro length | MX-300 length |
|---|---|---|---|---|---|---|
| 3 | 20 | 20 | 59.5 | 59.5 | 38.75 | 38.75 |
| 4 | 23 | 23 | 60 | 60 | 38.25 | 38.25 |
| 5 | 26 | 26 | 60.5 | 60.5 | 37.75 | 37.75 |
| 6 | 29 | 29 | 61 | 61 | 37.25 | 37.25 |
| 7 | 33 | 33 | 61.5 | 61.5 | 36.75 | 36.75 |
| 8 | 37 | 37 | 62 | 62 | 36.25 | 36.25 |
| 9 | 41 | 41 | 62.5 | 62.5 | 35.75 | 35.75 |
| PW | 45 | 45 | 63 | 63 | 35.5 | 35.5 |
| GW | 50 | 50 | 63 | 63 | 35.25 | 35.25 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Lofts compared
- JPX-800 Pro
- MX-300
What the differences mean
Every club the two sets share has exactly the same loft, starting with a 33° 7-iron. On paper there is no distance or trajectory difference: with the same swing, a 7-iron from either set should launch and carry about the same. The real differences are in how the heads are built, how they look at address and how they feel at impact, none of which a spec table can show. Lie angles and lengths match as well, so any fitting adjustment made to one set would carry straight over to the other.
Both are players irons, built for roughly scratch to 10 handicaps. Small-to-mid cavity backs with traditional lofts, modest offset and workable shaping for low-handicap players. Because they target the same golfer, the decision comes down to the specific loft, feel and shaping differences rather than who the sets are made for.
Both heads are listed as Grain Flow Forged with an undercut cavity. With the build method this similar, differences in feel come down to head size, sole width, topline and offset rather than how the heads are made.
Both sets were introduced in 2010, so this is a choice between two models from the same lineup rather than an upgrade: Mizuno designed them to sit side by side for different players.
Which should you choose?
The JPX-800 Pro and MX-300 share the same lofts on every club on file, so the difference is in head construction, feel and forgiveness rather than trajectory.
Both charts are reproduced in full on their own pages: Mizuno JPX-800 Pro specs and Mizuno MX-300 specs.
Frequently asked questions
Is the Mizuno JPX-800 Pro stronger lofted than the MX-300?
No. Both have a 33° 7-iron and the same loft on every club they share, so neither is stronger lofted. The difference is in construction and feel.
What is the loft difference between the Mizuno JPX-800 Pro and MX-300?
There is none. Every club both sets include has the same loft, including the 33° 7-iron.
Are the Mizuno JPX-800 Pro and MX-300 aimed at the same golfer?
Yes. Both are players irons, built for roughly scratch to 10 handicaps. Choose on feel, looks and gapping, ideally after hitting both.
Do the Mizuno JPX-800 Pro and MX-300 have the same lie and length?
At the 7-iron, yes: both are 61.5° lie and 36.75 inches long.
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