Why Your 6-Iron and 7-Iron Carry the Same Distance (And What To Do About It)

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Pull both irons. Hit ten balls each on a launch monitor. Check the carry averages. If they are within five yards of each other — and a startling number of amateur bags have exactly this problem — you do not have a club gapping problem in theory. You have one in practice, and it is quietly costing you strokes every round.

Iron distance gap problems are one of the most common and most ignored issues in amateur golf. The good news is that the diagnosis takes one sim session. The bad news is that the fix is sometimes a simple lesson, sometimes a fitting, and sometimes you actually do need to spend money. Here is how to know which.

What Healthy Club Gapping Looks Like

The accepted target for iron gapping is roughly 10 to 15 yards of carry between consecutive clubs. A 7-iron carrying 165 wants a 6-iron around 175 to 180 and an 8-iron around 150 to 155.

Below 10 yards of separation, you have functional duplicates — two clubs doing the same job. Above 20 yards, you have a coverage hole — distances inside that gap that do not match a club in the bag, forcing you to take something off or add something onto a swing.

Why It Matters On The Course

A 12-handicap with a 6-iron and 7-iron that both carry 168 is hitting one of those clubs every time the yardage falls between 160 and 175. That is roughly four to seven approach shots per round. Half of those become "between clubs" decisions made under pressure, and bad decisions show up on the scorecard as bogeys.

Tour players do not have this problem because their bags are fit, their lofts are tracked, and their gapping is measured every season. Your bag is probably none of those things.

How To Identify Your Gaps

You need a launch monitor — TrackMan, Foresight/GCQuad, SkyTrak, Uneekor, Full Swing, or KGOLF will all do this fine. You need 10 representative balls per club. And you need to actually look at the carry averages, not the longest one of the day.

The Quick Audit

Hit ten balls with each iron from PW up through your longest scoring club. Throw out the worst two and average the rest. Write the carry numbers down in a column.

Subtract each row from the one above it. That is your gap. Anywhere the gap is under 10 yards or over 20 yards is a problem.

What "Average" Means Here

This is the step amateurs get wrong. Your "7-iron carry" is not the longest 7-iron you have ever hit. It is also not the one that flushed when the ball flight gods smiled on you. It is the average of your normal swings on that day.

The Cut's bag tracking shows current carry vs. "if all green" projected carry per club — meaning the carry if every metric on that club hit its window. That second number is what you would gain if your gaps were healthy. The difference is sometimes startling.

Why Iron Distance Gaps Happen

There are usually three causes. Identifying which one is yours determines whether the fix is technique, fitting, or equipment.

Cause 1: Loft Creep

Modern irons have aggressively de-lofted over the last twenty years. A 2024 7-iron from a major OEM is often 28°. A 2004 7-iron from the same brand was 34°. That is a six-degree difference — basically a full club.

If you have a mixed set of older long irons and newer short irons, your lofts are probably stacked weird. You might have a 7-iron at 30° and a 6-iron at 27.5° — only 2.5° of separation, which produces almost identical carry distances at amateur swing speeds. Same swing, same carry, no gap.

Cause 2: Wrong Shafts

Two irons with correct lofts can still produce identical carry if the shafts are wrong. A shaft too stiff for the longer iron loses energy transfer and ball speed. A shaft too soft for the shorter iron adds dynamic loft and spin, ballooning the flight.

The result: the 6-iron does not gain as much as it should, the 7-iron flies higher and shorter than it should, and the gap collapses. This is the most common cause we see for the "6 and 7 are the same" problem in fittings — the lofts are right and the swing is fine, but the shafts are mismatched.

Cause 3: Swing Speed and Strike

If your swing speed drops below roughly 75 mph with a 7-iron, the 1° of loft difference between consecutive irons stops producing a meaningful carry difference. There is just not enough energy to separate them.

This is why slower swingers benefit disproportionately from hybrids — a 4-hybrid and a 4-iron with the same loft will produce different carry numbers because the launch and spin are easier to optimize.

The Fix: Technique Or Fitting?

A simple decision tree based on what your audit revealed.

If Smash Factor Is Low

Strike first, gap later. If your 7-iron smash is below 1.31 and your 6-iron smash is below 1.32, you are not yet hitting the clubs cleanly enough to know what their real carry distances are. A bad 6-iron and a good 7-iron will look the same on a launch monitor.

Work on contact for two weeks. Re-audit. The gap often resolves on its own once strike is consistent.

If Smash Is Fine But Lofts Are Stacked Weird

This is a fitting fix. Most golf shops will check your lofts for free or for a small fee. If your gaps are wrong because two adjacent irons are within 2° of each other, a loft and lie adjustment costs less than dinner and fixes the problem permanently.

If you bought your irons used or have mixed sets across years, do this immediately.

If Lofts Are Right But Shafts Are Wrong

This is the most expensive fix and also the most common one for serious amateurs. A proper iron shaft fitting on a TrackMan or GCQuad will tell you within two hours whether your shaft selection is part of the problem.

Worth doing if you play 30+ rounds a year. Skip it if you play eight.

If Swing Speed Is The Limiter

Replace the lowest-loft iron in your bag with a hybrid. A 5-iron at 23° and a 5-hybrid at 23° will produce dramatically different launch and spin, and you will recover the gap that was missing. This is one of the highest-leverage equipment changes a 75-mph-7-iron golfer can make.

Tracking Gaps Over Time

A bag is not static. Lofts drift. Shafts wear. Your swing changes seasonally. The bag that was perfectly gapped in March is rarely perfectly gapped in October.

When we look at data across The Cut user base, the bags that stay healthy belong to players who re-audit gaps every two to three months. The bags that develop problems belong to players who do it once and never again.

The Cut tracks every shot from your sim sessions and shows you which clubs are converging, which are diverging, and which ones have shifted carry by more than 5 yards from their three-month baseline.

Gapping Beyond Irons

Iron gaps get the headlines, but driver-to-3-wood and PW-to-gap-wedge gaps cause as many problems on the course.

• Driver to 3-wood: target 25–30 yards of carry separation
• 3-wood to longest hybrid or iron: target 15–20 yards
• PW to gap wedge: target 10–15 yards
• Gap wedge to sand wedge: target 8–12 yards

If your driver and 3-wood are within 15 yards of each other, you have a coverage hole. If your gap wedge and sand wedge carry the same, you have a wedge gapping problem — which is its own can of worms worth covering separately.

Common Mistakes In Gap Audits

Things that derail an otherwise good gap audit:

• Auditing on a windy outdoor range — wind hides 10-yard differences
• Mixing in pulled-too-hard swings — every iron has a max, that is not the average
• Auditing only your favorites — your 4-iron probably needs a look
• Skipping wedges — half the strokes are inside 100 yards
• Doing it once a year — bags drift faster than that

Frequently Asked Questions

How many yards should there be between irons?

Roughly 10 to 15 yards of carry between consecutive irons. Less than 10 means functional duplicates. More than 20 means coverage gaps that force in-between swings on the course.

Is club gapping a fitting issue or a swing issue?

It can be either. If smash factor is low across the irons, fix the swing first. If smash is fine but adjacent irons carry the same, it is almost always a loft or shaft issue and needs a fitting.

How often should I check my gaps?

Every two to three months for serious amateurs. Loft drift and shaft wear are real, and seasonal swing changes can shift carry distances by five yards or more.

The Bottom Line

A bag that gaps cleanly is the cheapest stroke savings in golf — no new clubs required, just a sim session and a willingness to look at the numbers honestly. The Cut tracks every shot from your TrackMan and shows you which clubs are costing you yards — green dot, you are good; red dot, here is the fix.