Callaway Big Bertha OS irons review

It's designed to help high handicappers hit their irons further

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Golf Monthly's technical editor reviews the Callaway Big Bertha OS iron, designed for high handicappers that need help hitting the ball further and straighter

Joel Tadman
Deputy Editor

Joel has worked in the golf industry for over 15 years covering both instruction and more recently equipment. He now oversees all equipment and video content at Golf Monthly, managing a team of talented and passionate writers and presenters in delivering the most thorough and accurate reviews, buying advice, comparisons and deals to help the reader or viewer find exactly what they are looking for.

He currently plays his golf at Burghley Park Golf Club in Stamford, Lincs, with a handicap index of 2.9.

Joel's current What's In The Bag?

Driver: TaylorMade Qi4D, 10°, Fujikura Ventus VeloCore+ Blue 6 S shaft.

Fairway woods: TaylorMade Qi4D, 15° and 21°.

Irons: Titleist T150, 4-PW

Wedges: Titleist Vokey SM11, 49°, 54° and 59°

Putter: L.A.B. Golf DF3

Ball: 2026 TaylorMade TP5x Stripe