How Should I Gap a Mixed Iron Set?
Gap a mixed iron set at the point where its models change, using actual lofts and your own carry distances. Compare that crossover with the gaps immediately above and below it, rather than assuming consecutive iron numbers make consecutive distances. A matching badge is not the test; a usable carry ladder is.
A mixed iron set, also called a blended or combo set, can pair one model in the long irons with another in the scoring clubs, or combine individual clubs bought separately. Either way, the join needs checking before you trust the yardage book. The worksheet below subtracts your numbers; it does not predict how far a different head will fly.
Your mixed iron set crossover
These are starting specifications, not a fitting. Confirm them against the club itself before you buy. See Terms.
Why the crossover needs its own check
Within a mixed iron set, the designer of one model did not necessarily choose its lofts to sit beside every other model you might own. Two adjacent clubs can come from different loft progressions, even when their sole numbers are consecutive. Your first job is to record both actual specifications.
Start with the longest iron from the shorter-club model and the next club above it. If the change is between the 6-iron and 7-iron, those are the two clubs to inspect first. Then add the 5-iron and 8-iron, because a crossover cannot be judged without its neighbours.
This is different from asking what a single iron set should carry at your swing speed. That page provides a starting estimate from one set, while a mixed iron set needs a club-by-club record at the join. One pitching wedge cannot establish every loft in two separate models.
| Longer iron | Loft | Shorter iron | Loft | Calculated step |
|---|---|---|---|---|
| 2025 T250 6-iron | 27° | 2025 T150 7-iron | 32° | 5° |
| 2025 T250 7-iron | 30.5° | 2025 T150 8-iron | 36° | 5.5° |
The four lofts above come from Titleist's July 2025 T-Series specification release. The steps are subtraction, not a manufacturer recommendation to play either combination. They show why moving the crossover by one club changes the specification being assessed.
Neither row tells you the resulting carry gap. A loft difference is a screening measurement, not a conversion factor that works across every golfer and head design. For a mixed iron set, the carry session is what decides whether the screened combination actually covers useful distances.
Build a small carry record around the join
Use the same ball type, comparable lies and the same distance setting for each club. On a launch monitor, record carry rather than mixing carry for one iron with total for the other. Trackman's definition uses the trajectory's return to the launch elevation, which is why an uphill target's landing distance is not automatically the same measurement.
For a mixed iron set, compare ordinary playable swings rather than selecting each club's longest shot. Keep the individual readings as well as your chosen representative carry, so the spread remains visible. An average on its own can conceal a club that alternates between two very different outcomes.
Alternate the irons in short batches instead of hitting one while fresh and the other after a long session. Record obvious mishits separately, but do not silently erase every short shot to manufacture a neat ladder. Repeat the session if the conditions or strike quality make the comparison inconclusive.
Once you have carries for the four clubs around the join, subtract each shorter club's figure from the club above it. The crossover in a mixed iron set is one of those steps, not an isolated target number. Use your neighbouring steps as context without assuming they are already ideal.
| Illustration | Longer carry | Shorter carry | Carry step | Difference from 12-yard reference |
|---|---|---|---|---|
| A: fairly even crossover | 170 yd | 157 yd | 13 yd | 1 yd |
| B: wider crossover | 181 yd | 157 yd | 24 yd | 12 yd |
| C: overlapping roles | 159 yd | 157 yd | 2 yd | -10 yd |
These are hypothetical arithmetic inputs for illustration, not measured golfers, test results or predicted performance of the Titleist clubs. The 12-yard reference is also hypothetical, not a fitting rule. Enter your own reference in the worksheet instead of treating that number as an instruction.
Example A raises a different question from B or C, even though the illustrative loft inputs are identical. That is the point of measuring a mixed iron set: the useful answer depends on what your clubs do for you. A chart of nominal iron numbers cannot supply that missing information.
Read the result without turning it into a diagnosis
A wider crossover deserves a closer look when it leaves an approach distance that neither club covers comfortably. First confirm the readings, then compare both clubs' flight and strike patterns. Do not conclude from the subtraction alone that one iron needs bending or replacing.
A small crossover in a mixed iron set may mean the clubs overlap in carry, but they can still have different roles. One might be a reliable approach club while the other is used for a lower shot from a specific lie. Keep both only if that separate role matters enough to justify the slot.
If the supposed longer iron carries less, leave that negative result visible rather than reversing the numbers to make the progression look correct. Check that you entered the intended clubs, units and distance type. If the readings repeat, a fitter can assess the equipment and delivery without guessing from the club numbers.
Distance is not the only useful observation in a mixed iron set. Record where shots finish sideways and whether the flight suits the approaches you actually face. Trackman's parameter guide distinguishes landing angle from carry and total distance; none of them is a substitute for the others.
| Finding | Next useful check | Do not assume |
|---|---|---|
| Crossover larger than neighbouring steps | Repeat carry readings and verify both builds | A fixed loft adjustment will close it |
| Very similar carries | Compare repeatability, flight and actual shot roles | Both clubs are automatically useless |
| Longer iron carries shorter | Check entries, measurement conditions and strike | The club number guarantees more distance |
| Large shot-to-shot spread | Keep the individual readings and reassess the session | The average is a dependable stock yardage |
Verify the build before changing the loft
Write down the exact model and generation of every crossover club. Manufacturers can reuse a model name, and a standard specification table is not proof that a used club still has its original build. A mixed iron set assembled over several purchases needs that distinction especially clearly recorded.
Use the manufacturer's own table for the correct generation, then keep its link beside the recorded loft. If the specification cannot be found, mark it unknown instead of copying a similar model's value. A missing number is a reason to ask for a measurement, not a licence to estimate it from the sole stamp.
Check shaft model, playing length and any declared alterations with the seller or fitter. They are separate facts from the head's published loft. For a mixed iron set, differences in those build details are worth investigating even when the loft ladder looks tidy.
The existing graphite-or-steel guide discusses identifying shaft models and checking consistency. Use that process to document the shafts, not to infer an assembled shaft's weight from its material alone. The crossover assessment should compare known builds wherever possible.
Do not prescribe a loft bend by dividing a yardage gap by a generic yards-per-degree figure. Any alteration needs the exact head's permitted adjustment range and a fitter's assessment, followed by another carry check. Your arithmetic identifies a question; it does not establish that an alteration is suitable.
| Record | Evidence | If unavailable |
|---|---|---|
| Head model and generation | Club identification and matching manufacturer documentation | Ask for identification before assigning specs |
| Published standard loft | First-party specification table | Mark unknown; do not substitute another model |
| Current loft and length | Build record or club-specific measurement | Distinguish standard spec from unconfirmed build |
| Representative carry and spread | Your saved session readings | Keep the carry field blank rather than predicting it |
Check the rest of the bag after the crossover
Changing the join in a mixed iron set does not automatically mean changing its pitching wedge. If you retain that club and its build, the wedge starting point remains its own verified loft. A long-iron model's pitching wedge must not replace the specification of the pitching wedge you actually carry.
The wedge tool below handles that separate downstream question. Select the model of your actual pitching wedge, or enter its known loft manually, and add your own carry if available. It does not reconstruct a mixed iron set or certify the crossover you checked above.
Check below your actual pitching wedge
Use the pitching wedge you carry, not the long-iron model's PW. These are starting estimates, not measured carries.
These are starting specifications, not a fitting. Confirm them against the club itself before you buy. See Terms.
At the long end, check the gap to your hybrid or fairway wood using the same carry record. Which iron a hybrid replaces explains the existing loft-based starting screen. Confirm it against your mixed clubs rather than applying one model's inferred ladder to everything.
For the bottom end, wedge gapping for your own set remains the relevant guide. For the whole bag, return to the full-bag tool once the actual inputs are recorded. Keep the crossover readings alongside those starting specifications so estimates and observations do not get merged.
Titleist's blending guidance considers distance gapping, dispersion and descent together, rather than insisting on one model throughout. That supports checking the whole job each iron performs. It does not establish a universal crossover location or promise a performance gain from mixing heads.
| Check | Keep in your record |
|---|---|
| The crossover is identified | Both models, generations and adjacent clubs |
| Specifications are traceable | Source links and any measured build differences |
| Carry steps are comparable | Same units, distance type and representative conditions |
| The gaps make sense for your shots | Carry spread, flight observations and remaining uncertainties |
The aim is not a perfectly uniform row of loft differences. It is a bag whose clubs cover the shots you need, with a crossover you understand rather than assume. If the evidence is incomplete, take the record to a fitter before spending money or altering the clubs.