What irons do you have in your bag?
Are they blades, cavity backs, players’ distance, or muscle backs?
Are your irons multi-material hollow bodies or a one-piece forging?
You can start to see how difficult it is now to decipher “iron speak” because there are so many different options available. Gone are the days of choosing between a blade and a cavity back.
In the modern era, we are used to choice, and manufacturers help create that choice by introducing new materials, designs, and technology into golf irons.
What manufacturers sometimes struggle to get their heads around is player preference, which sometimes can be misguided.
The best players in the world use blades because they value the feedback and workability, and yet, you’ll see mid-handicap golfers with blades in their bag, and they’ll argue it’s for the same reasons. Reality can be cruel, and the reason why these golfers are still mid-handicap players is the blades in their bag.
The difficulty is that it can be a sign of weakness if the same player opts for something easier to hit. The “cool factor” can be lost by not having a set of knives in the bag anymore, but if they start to perform more consistently with their irons, then the blades will be forgotten about.
But, with all these choices, the question you might be asking yourself is which iron type is best for my swing?
To decide which golf iron is right for you, let's break down the main features and benefits of modern irons. This guide will help you identify which iron design best matches your playing needs and goals.
- Where Iron Performance Is Won Or Lost
- What Golfers Need From Their Irons
- Forged Works Of Art: The Bladed Iron
- Blade Looks But More Forgiveness: The Muscle Back Iron
- The Modern Cavity Back Masterpiece
- Rise Of The Combo Set: Getting The Best Of All Worlds
- It’s Not Just The Right Heads That Matter
Where Iron Performance Is Won Or Lost
Before we go into the details of details such as blades vs cavity backs, let's remind ourselves of what’s important in a good, consistent iron game.
Hitting the golf ball as far as possible might seem like a good idea with the driver, but the theory shouldn’t be carried over into the iron game. The iron game is more about precision and predictability.
Put it this way. Which golfer would you rather be? The one who is hitting two clubs less than their playing partners to the greens but seldom hits the green, or the player who can regularly find the putting surface or get close enough to the putting surface to leave an easy up-and-down.
Regardless of technology, good iron play relies on predictable results.
Predictable outcomes mean consistent distance gapping, launch, spin, and trajectory.
Arguably, the most important aspect of consistent iron play is what happens on mishits. A heel or toe strike should still fly and land close to where a well-struck would finish up. Shot dispersion should still be fairly tight, and can mean the difference between still finding the putting surface instead of winding up in a bunker or deep rough near the green.
Technology can help narrow the margins, but ultimately, success comes down to pairing that technology with the player who can benefit the most from it.
What Golfers Need From Their Irons
Consistency breeds confidence, and confidence can lead to better scoring.
Sounds a bit cliched, but let us explain.
That amazing set of blades will give you bag kudos outside the pro-shop, but out on the course is where it really matters. Constantly missing the target or missing the sweetspot will soon erode confidence, leaving you second-guessing what the outcome of your shot will be.
When you can’t predict with any certainty what the outcome of the shot will be, your chances of shooting good scores dwindle drastically.
Worse still, if you are hell-bent on sticking with your irons, you can start to look for flaws in your swing to find the answer to your poor iron play, which is dangerous if you are hitting your driver and fairway woods reasonably well.
A period of self-reflection and analysis is required to start down the right path of finding the irons you need.
It starts with something simple, like keeping stats on your approach play. The easiest stat is how many par threes you hit in regulation, but your iron play isn’t just about par threes.
Keeping track of any iron shots you have into the green can help build an accurate picture of your game and switch the emphasis to what’s important in your iron play: consistency.
Keeping your own stats will start to build a picture, which will highlight things like whether you miss more to the right or left of target and if you have a tendency to come up short or go long on approaches.
With a clear understanding of your iron game, you can choose the iron type that truly enhances your performance. This targeted approach leads to better results.
So, let’s have a look at what’s available.
Forged Works Of Art: The Bladed Iron
Blades sit in the rarified air of being the preferred choice of the best players who have played the game. They account for more major victories than any other type of iron in the game.
Finding a true flat back blade in the modern game is virtually impossible; all those major victories we referred to were mainly delivered through the likes of Jack Nicklaus, Arnold Palmer, and Gary Player.
A bladed-iron is forged from a billet of soft steel and beaten into shape by large presses.
At address, blades have the smallest profile behind the ball. Compact head shapes are paired with thin toplines and narrow soles, giving them an intimidating look.
Forged blades offer zero support on off-centre hits, and distance fall-off from a less-than-perfect shot will be punished. Blades feature no contemporary technology or additional materials to improve the iron’s stability or centre of gravity.
The lack of any support doesn’t faze the best players in the world, who have the consistency of strike and benefit from blades’ flexibility in terms of manipulating the trajectory or shot shape more easily.
Blade Looks But More Forgiveness: The Muscle Back Iron
If you want identical looks to a blade but need a little more forgiveness, the muscle back or MB iron might be the answer.
At address, you have an identical head profile as the blade; the thin top line and more compact head shape, but the difference lies at the back of the head.
More mass is centred around the hitting area, and a little lower to transfer more energy to the ball at impact and optimise the centre of gravity.
The muscle back’s profile will still favour the better ball striker’s desire to have the maximum amount of control and shot-shaping capabilities.
While you might fancy channelling your inner Scheffler, McIlroy, or Woods, it’s worth noting that muscle backs aren’t likely to be a good choice if you lack consistency in your ball-striking.
On a further point, outside of the three names mentioned previously, many players in the top fifty in the world don’t use muscle backs, and even Scheffler and McIlroy use a more forgiving longer iron alternative at the top end of their bags.
The Modern Cavity Back Masterpiece
Cavity backs have arguably seen the biggest evolution of any iron in recent years.
Gone are the awkward looks, such as chunky cavities hollowed out in the rear of the head, thick top lines, lots of offset, and wide soles.
As technology and design have progressed, modern cavity backs conceal their game-improvement characteristics in sleek, premium-looking heads that still inspire confidence when placed behind the ball for those players who need the most help.
Where cavity backs have made the biggest leap is around face technology.
Even with older cavity models that featured perimeter weighting, an off-centre hit would still be punished heavily through a loss of ball speed and direction.
Advancements in face design, such as Callaway and Corba’s use of AI, help map out the iron face more efficiently, and create hotspots across the face, which means if you badly strike a shot out of the heel or toe, the ball should travel as far as a centred strike.
However, a more predictable distance from off-centre hits isn’t the only benefit of employing “smart” faces. Consistent spin and launch figures are also important and an additional benefit.
What this means for you on the course is that a shot struck horribly out of the toe will fly and stop similarly to a centred strike.
Modern cavity backs still have hollowed-out sections at the rear of the head, but now also employ different materials such as tungsten, which can be used as a way to improve the head’s MOI, or precisely locate the sweetspot through each iron.
Improving MOI in an area is the same in principle as the driver; the higher the MOI, the more resistant the head is to twisting at impact, adding another layer of predictability to your game.
Getting The Best Of All Worlds
While we have looked at each iron type in isolation, a set of irons more often than not contains different types to maximise consistency.
It’s not just Scheffler and McIlroy that employ more forgiving long irons; an estimated 80% of PGA Tour players have a combo set of irons in use.
Using a more forgiving long iron equivalent helps these players get more stopping power on the ultra-fast putting surfaces they play on a weekly basis.
More forgiving long irons aren’t just randomly put into the bag. Launch monitor data will help identify the correct launch and spin rates needed, and players look to have a similar trajectory across all their irons, which helps them visualise their shot selection more effectively. Predictability is at the forefront of selection.
Hybrids or lofted fairway woods might be safer alternatives to long and even mid irons for players who need the most help. Better players can employ different iron setups because their ball striking can be more consistent.
The point to cross over from one iron type to another is most effectively determined with the help of a launch monitor, which will monitor the vital stats.
Manufacturers are also working on creating more synergy in the looks of their irons, which we see in the T-Series models from Titleist, Cobra’s new 3DP irons, and Mizuno’s Pro range.
Each of these ranges has three head shapes with similar dimensions but offers different levels of support: help where it's needed most in the longer irons, a combination of support and playability in the mid irons, and precision for the short irons.
The synergy in looks in these sets is deliberate to ensure a consistency of look down at the ball at address. Don’t lose sight of how important consistent head shapes at address look in engraining confidence in your iron play.
We refer to a mixture of irons as a combo set, and the secret to building the right combo set comes from what we’ve already discussed. Consistency in launch and spin, consistency in distance gaps between each golf iron, and consistency in overall trajectory.
It’s Not Just The Right Heads That Matter
We’ve touched on head technologies, which help to create more consistency in iron play, but to achieve predictable results, you can’t overlook the importance of having the right shaft fitted to your irons.
We covered the rise of graphite shafts in irons in a previous post, and many players should at least consider the option of graphite in their next iron set.
Steel shafts have stretched beyond the traditional regular, stiff, or extra-stiff choice. Manufacturers like KBS and Nippon create a wide range of shaft weights along with flexes to help every golfer dial in the right shaft for their game.
Consistent ball striking is aided by having your irons cut to the correct length and the lie angle.
We all come in different shapes and sizes and have our own unique way of delivering the clubhead into the ball, so why would you think that the standard shaft, lie, and length option you see on a retail set of irons in your favourite outlet would be suitable for every golfer?
Adding the correct grip and, more importantly, correct grip thickness, not only makes holding the club more comfortable, but it can also improve over-aggressive or passive hands in the swing, leading to a more consistent delivery of the clubhead at impact.
Irons today come in many different forms; choice is good, but you need to have an idea of what is right for your game.
Blades, muscle backs, and cavity backs offer different things to different golfers. Choice is good, but understanding what’s best for your game makes a big impact on what you would purchase.
You have to be analytical and realistic about your standard of play. Look at how your current set of irons performs on the course. How consistent in greens in regulation, how consistent a ball-striker are you, and when you miss the sweetspot, where do you miss it?
Armed with some basic data helps to frame what the key attributes are you should be looking for in a set of irons.
Custom fitting can help bring key technologies in iron faces to life with the fitting of correct shafts and having your irons cut to the right length and lie angle.
If you are looking to gain more predictable results in your iron play this season, book a session with Nine By Nine Golf and see how custom-built golf irons can help you achieve better scoring.