Callaway Big Bertha OS irons.
Jesse Reiter
Monday, March 06, 2017

CATEGORY: Max Game Improvement Irons

PRICE: $1,100, steel; $1,300, graphite

WE TESTED: 4-PW with True Temper Speed Step 80 steel and 4-PW with UST Mamiya Recoil ES 460 graphite shafts.

KEY TECHNOLOGY: The light, cagelike structure allows mass to be placed low in the long irons to boost launch.

Buy Them Now for $1,099.99

Buy Them Now for $1,099.99


Flies higher than others, which makes the long irons easier to handle; brawny head rips through the rough with ease, and is adept at picking balls out of fairway bunkers.

"Tremendously forgiving--and no slouch when it comes to distance."

Distance Control

This one packs a punch; a few testers hit it up to a full club longer than their own sticks; several other guys notice significant gains on mis-hits.


Several guys struggle with finesse shots, and would swap out the wedge; some wish for more feedback, while others like a softer feel; can look a little clunky and too much like a hybrid.

Bottom Line

The Big Bertha OS is one of the better irons tested. This mean-looking stick serves up a big dose of forgiveness and length.

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