Callaway · Iron set · 2014 · Previous model
Callaway Big Bertha (2015) irons
Super game improvement, 4.5 of 5 for forgiveness
Callaway's first Big Bertha super game improvement iron, launched in October 2014 as its 2015 model: a hollow head with the first face cup Callaway put in an iron, 5.8 mm of offset at the 7-iron and a weak 30° 7-iron. Callaway no longer sells the Big Bertha (2015) new; the Big Bertha OS, Big Bertha (2019), Big Bertha B21 and Big Bertha (2023) followed it, and the Quantum Max OS is the newest model in its line.
4.5 of 5 forgiveness score
$329.99 used at 2nd Swing Golf
In average condition or better: from $412.99
New instead: Callaway Quantum Max OS, $1,099.99 at Golf Discount, 7 irons (4-PW), checked 2 Nov
Choose it if
- You often catch it thin or heavy and want the most help an iron gives.
- Your iron shots start right or fly low: 5.8 mm of offset gives the face more time to square.
- You want a higher flight: the 30° 7-iron is weaker than most.
- You play left-handed: it was made left-handed.
Choose something else if
- If you fight a slice, the Big Bertha B21 has more offset at the 7-iron: 6.86 mm against this set's 5.8 mm.
- Class
- Super game improvement
- 7-iron loft
- 30°Every club's loft, lie and length
- Offset (7-iron)
- 5.8 mm
- Stock flexes
- Light, regular or stiff in graphite (Recoil 460), regular or stiff in steel (Callaway gives its Light flex no letter); the women's set in Callaway's women's flex, graphite and right-handed only
- Hands
- Left or right; left-handed in the men's set, 4-iron to SW; the women's set right-handed only.
- Used
- From $329.99 at 2nd Swing Golf, checked 31 Oct
What changed in the Quantum Max OS
Both are Callaway's super game improvement iron of their year. The Quantum Max OS has a 7-iron a degree stronger (29° against 30°) and less offset there (4.80 mm against the 2015 Big Bertha's 0.230 in, 5.8 mm), with an AI-optimized face, an undercut cavity and a three-part Tri-Sole where the 2015 Big Bertha had a hollow body and Callaway's first iron face cup. Its set adds a GW between the AW and SW.
Callaway no longer lists the 2015 Big Bertha, and no shop we checked has a new set, so it is bought used, for much less than a new Quantum Max OS. Choose it for Callaway's super game improvement head and a weak 30° 7-iron for little money; choose the Quantum Max OS for a new set built to your hand, shaft and flex, or a GW in the set.
| Detail | Big Bertha (2015) (previous) | Quantum Max OS (current) |
|---|---|---|
| Class | Super game improvement | Super game improvement |
| Forgiveness score | 4.5 of 5 | 4.5 of 5 |
| 7-iron loft | 30° | 29° |
| Offset at the 7-iron | 5.8 mm | 4.8 mm |
| Sole | – | Tri-Sole |
| Stock flexes | Light, regular or stiff in graphite (Recoil 460), regular or stiff in steel (Callaway gives its Light flex no letter); the women's set in Callaway's women's flex, graphite and right-handed only | Regular or stiff |
| Hands | Left or right | Left or right |
| Price new | No longer sold new | $1,099.99 at Golf Discount, 7 irons (4-PW), checked 2 Nov |
| Price used | From $329.99 at 2nd Swing Golf (6 clubs (6-PW, AW), graphite, regular flex, below average condition), checked 31 Oct | From $831.99 at 2nd Swing Golf (7 clubs (6-PW, AW, GW), steel, stiff flex, average condition), checked 31 Oct |
Loft, lie and length, club by club
| Club | Loft | Lie | Length | Offset | Bounce |
|---|---|---|---|---|---|
| 4-iron | 20.5° | 60.5° | 39.125 in | 0.26 in | 1.5° |
| 5-iron | 23° | 61.25° | 38.5 in | 0.25 in | 2° |
| 6-iron | 26° | 62° | 37.875 in | 0.24 in | 2.5° |
| 7-iron | 30° | 62.5° | 37.25 in | 0.23 in | 3° |
| 8-iron | 34.5° | 63° | 36.625 in | 0.22 in | 4° |
| 9-iron | 39° | 63.5° | 36 in | 0.21 in | 5° |
| PW | 44° | 64° | 35.75 in | 0.2 in | 7° |
| AW | 49° | 64° | 35.5 in | 0.175 in | 11° |
| SW | 54° | 64° | 35.25 in | 0.15 in | 15° |
Build a whole bag around it, or check the lofts in the bag you carry.
Use the iron finder to compare sets for your usual miss, and check the set makeup and loft gaps before ordering. Between a game improvement and a super game improvement head, this is how to tell which one your strike needs.
Big Bertha (2015): the questions buyers ask
- Is the Callaway Big Bertha (2015) forgiving?
- Yes. It is Callaway's super game improvement iron, with 5.8 mm of offset at the 7-iron and a 30° 7-iron. It scores 4.5 of 5 on our reading of what Callaway publishes about it; the most forgiving iron sets we cover score 5.0.
- Who is the Big Bertha (2015) for?
- It suits golfers who often catch it thin or heavy and want the most help an iron gives.
- Does the Big Bertha (2015) come in senior or ladies flex?
- Both, as Callaway names them: Light, the flex its buying guide calls senior, and Women's, in its women's set. Callaway listed Light, Women's, regular (R) and stiff (S).
- Is the Big Bertha (2015) sold left-handed?
- Left-handed in the men's set, 4-iron to SW; the women's set right-handed only.
- What are the Big Bertha (2015) lofts?
- 4-iron 20.5°, 5-iron 23°, 6-iron 26°, 7-iron 30°, 8-iron 34.5°, 9-iron 39°, PW 44°, AW 49°, SW 54°, as Callaway published them. The full table with lie, length and offset is above.
- Which clubs come in a Big Bertha (2015) set?
- Callaway sold the 4-iron to PW, AW and SW, in sets of five to eight clubs (6-PW to 4-PW and AW or SW; the sets with an SW right-handed only). Its women's set had the same lofts and offset, an inch shorter, with a women's-flex graphite shaft and right-handed only, so a used ladies set plays the lofts in the table.
- How much does the Big Bertha (2015) cost?
- Callaway no longer sells it new. Used from $329.99 at 2nd Swing Golf, checked 31 Oct. In average condition or better, from $412.99. Prices change; the seller's page has today's.
How the 4.5 adds up
The forgiveness score is our reading of what Callaway publishes about the head, from 1 to 5. It is not a test result. How every score works.
| Part | Points | Why |
|---|---|---|
| Head class | 4 | Super game improvement: the biggest, most forgiving iron head a maker sells. |
| Offset | +0.5 | 5.8 mm at the 7-iron, at or above our 4.5 mm mark. |
| Sole | +0 | Callaway doesn't publish a sole width, so the sole earns no point. |
| Forgiveness score | 4.5 | of 5 |
The score rates the head only. Hand, flex and price decide which version you buy, not how forgiving it is. Callaway does not publish a sole width.
Specification sheet
| Maker | Callaway |
|---|---|
| Model | Big Bertha (2015) |
| Model year | 2014 |
| Type | Iron set |
| Class | Super game improvement |
| Handicap range the maker states | – |
| Offset | 0.230" at the 7-iron (0.260" in the 4-iron down to 0.150" in the SW) |
| Sole | – |
| Moment of inertia (MOI) | – |
| Face technology | 360 Face Cup (Callaway's first in an iron); hollow body; Internal Standing Wave |
| Construction | A hollow head with a 360 Face Cup, the first Callaway put in an iron, taken from its fairway woods: the hollow body lets Callaway put the weight where it adds forgiveness, and with an Internal Standing Wave behind the face Callaway called it the hottest iron it had made. The soles are wider in the long irons and narrower in the short ones. |
| Set makeup | Callaway sold the 4-iron to PW, AW and SW, in sets of five to eight clubs (6-PW to 4-PW and AW or SW; the sets with an SW right-handed only). Its women's set had the same lofts and offset, an inch shorter, with a women's-flex graphite shaft and right-handed only, so a used ladies set plays the lofts in the table. |
| Clubs in the set | – |
| Stock steel shafts | True Temper Speed Step 80 |
| Stock graphite shafts | UST Mamiya Recoil 460, UST Mamiya Recoil 450 (women's) |
| Stock flexes | Light, regular or stiff in graphite (Recoil 460), regular or stiff in steel (Callaway gives its Light flex no letter); the women's set in Callaway's women's flex, graphite and right-handed only |
| 7-iron loft | 30° |
| Hands | Left or right; left-handed in the men's set, 4-iron to SW; the women's set right-handed only. |
| Men's or women's | – |
| List price when new | $999.99 for the eight-club steel set (2014 model); not a price today |
| Price at Callaway | – |
| Set price | – |
Compare with other super game improvement irons
No matching clubs. Clear the search or loosen the filters.
| Sole | Hand | Where to buy | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 5.0 | Super game improvement | 28° | 4.8 mm | Wider | A · R · S · X | RH · LH | $1,299.99 at PGA TOUR Superstore 7 irons (5-9, PW, UW) · checked 2 Nov | ||
| 5.0 | Super game improvement | 32° | 4.6 mm | Wide | L · A · R · S · X | RH · LH | $749.95 at PXG 5 clubs (7-iron to sand wedge) at $149.99 each · checked 2 Nov | ||
| 5.0 | Super game improvement | 32° | 4.6 mm | Wide | L · A · R · S · X | RH · LH | $749.95 at PXG 5 clubs (7-iron to sand wedge) at $149.99 each · checked 2 Nov | ||
| 5.0 | Super game improvement | 31° | 5.7 mm | Wider: 23.9 mm at the 7-iron | R · S | RH | $962.50 at Mizuno 7 irons · checked 2 Nov | ||
| 4.5 | Super game improvement | 29° | 2.5 mm | Wide, sculpted | A · R · S | RH · LH | $599.99 at Tour Edge 7 irons · checked 2 Nov | ||
| 4.5 | Super game improvement | 29.5° | 5.2 mm | Skid sole, more bounce | A · R · S · X | RH · LH | $999 at Cobra 7 irons · checked 2 Nov | ||
| 4.5 | Super game improvement | 29.5° | 5.2 mm | Skid sole | L | RH · LH | $1,099 at Cobra 7 irons · checked 2 Nov | ||
| 4.5 | Super game improvement | not published | not published | Wide | R · S | RH · LH | $799.99 at Wilson 7 irons · checked 2 Nov |
Order: Forgiveness score first; on a tie, the set more golfers can buy, then a set that includes the long irons, then price. Use the arrows to sort. A dash means the maker does not publish it.
See all iron sets on the most forgiving irons page, or compare this club side by side. Waiting for a sale? The Black Friday golf club deals page has the price to beat on every club we price.
Sources
The specification comes from these pages; open the maker's page before buying, because prices and shaft options change. Check the exact shaft and hand at the shop before ordering.
- Callaway's specifications, archived copy of 3 Oct 2014
- Callaway's specifications, archived copy of 24 Mar 2016
- Callaway's specifications, archived copy of 14 Aug 2016
- Callaway's launch announcement
- Callaway's page on availability, archived copy of 15 Jun 2026
- Golf Discount's search results (checked 21 Oct)
- 2nd Swing Golf's used listings (checked 31 Oct)
- Pre-owned: seen at 2nd Swing Golf from $329.99 (checked 31 Oct)