Expert Review: Callaway Big Bertha B21 Single Irons

Published on 06/25/2023 · 4 min readThis review is my honest opinion of the irons, which I tested for one day in May of 2023.
David L. Brown, Golf Expert
By Golf Expert David L. Brown

All photos courtesy of David L Brown

About this Review: This review is my honest opinion of the irons, which I tested for one day in May of 2023.

My take

The Callaway Big Bertha B21 Single Irons are suited for someone looking for accuracy and consistency within their mid-range game. They are sharp with their silver and black design and, overall, will not disappoint.

About the club I tested

  • Model: 2021 Callaway Big Bertha B21
  • Loft setting: Standard
  • Shaft type: Steel
  • Shaft flex: Regular

About me

  • Average score: 79
  • Handicap: 7
  • Experience: 22 years of golf
  • Right/Left-Handed: Left-Handed
  • Typical ball flight: High
  • Golf ball used: Titleist Practice ProV1
  • Club swing speed: 97mph

Test conditions

  • When I tested the club: May 2023
  • Days tested: 1
  • Where I’ve used it: Simulator
  • Weather and wind conditions: Indoors

How it performs

Sound
5/5
Distance
4/5
Feel
4/5
Forgiveness
4/5
Launch
4/5
Workability
3/5

What I was looking for

I currently play TaylorMade Rac OS irons from 2008 and haven’t found a set I love to replace them with. I have tried out irons in 2023, like the TaylorMade Stealths, Callaway Rogues, and Titleist T200s, to see if any are worth buying. The biggest thing I am looking for is distance and forgiveness to be equally matched.

Why I chose to test these clubs

I decided to test these clubs because all of my woods are Callaway, and I love their distance, feel, forgiveness, and overall performance. I heard from a friend these were worth the try, especially for someone considering going to blades. These clubs performed well but were less forgiving than I wanted because of their thinner blade style.

What I love about it

  • Distance: The distance averaged around four yards further than my current irons on average, which I liked because they allowed me to attack pins from further back with a shorter club in hand. However, I currently play with the TaylorMade Rac OS irons from 2008, and my distance was the same. I hoped for 5-10 more yards with today's modern technology.
  • Forgiveness: These clubs are wider, so forgiveness is paramount. The Big Bertha irons were very easy to hit and had a way of keeping the ball on line longer than other irons because of their flash cup design.
  • Feel: There is no denying the feel. I knew exactly how I struck the ball, whether pure or off the toe or heel.
  • Sound: The sound was crisp when I connected with each shot, as it had a metallic sound to each shot.
  • Shaft Feel: The feel and weight of the shafts performed well, allowing me to strike through the ball consistently. They didn’t feel cheap or flimsy like some other cheaper irons on the market.
  • Shaft Performance: The shaft was standard steel and performed well. It was stable and allowed me to hit a high minor cut which is my tendency anyway, which I was pleased with.
  • Aesthetic Appeal: The silver and blue design gives it a sharp visual appeal when pulling these clubs out of the bag. I think they are a little bulky, but the color scheme and design make up for it.
  • Launch Angle: I was hitting a high cut on my purely struck shots, which I was looking for. I like the higher launching shots as it allows my ball to land softly on the green and spin.

Issues I’ve encountered

  • Workability: These irons do not offer great workability. The Big Bertha irons are great if someone is looking for a straightforward iron that will hit straight. However, these irons are not the best option if they want to hit a draw or fade consistently with some movement.
  • Adjustability: The clubs were not adjustable or didn’t have different models like some of the other irons to help find what is best for someone’s game.
  • Grip Feel: The grips were standard and slippery in indoor conditions. They wouldn’t have been great if I had any sweat or if it rained. I would customize the grips with Golf Pride ones that are more tacky.
  • Spin: My spin rate was higher than I would have liked at roughly 8,000rpms versus what I am currently used to at around 7,200rpms. I like having less spin because it helps my irons be more consistently on target.

Best shot with these clubs

I tested these clubs, and I wouldn’t say one shot stood out, but I liked that they were consistent with each swing. My chart on the simulator was all within 10 yards distance and 20 yards left or right.

Value for the money vs. other options

I think the Callaway Big Bertha B21s are a good value compared to other irons I have tested, like the Callaway Mavrik, Callaway Apex, and the Titleist T200. For their price, they are worth the purchase for someone looking to make an upgrade.

Final verdict

These irons were comfortable in my hands. I felt confident the more and more I tested them and felt like they were suited for someone looking for irons that would provide them consistency and accuracy over distance.

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