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Specs, loft charts and modeled carry for two sets golfers cross-shop. Callaway Quantum Max OS and Srixon ZXiR HL each have a full page.
| Spec | Callaway Quantum Max OS | Srixon ZXiR HL |
|---|---|---|
| Category | Super Game Improvement | Super Game Improvement |
| Player type | High Handicap | Senior |
| Model year | 2026 | 2026 |
| 7-iron loft | 26.5° | 29° |
| PW loft | 40.5° | 43° |
| Set makeup | 5-iron to PW | 6-iron to PW |
| MSRP | $1,099 | $1,049 |
| Technology | Wide Sole, Perimeter Weighting, AI Designed Face, Hollow Body, Stronger Lofts | Wide Sole, Forged, Cavity Back, Stronger Lofts, High Launch |
| Editorial recognition | - | - |
| Club | Callaway Quantum Max OS | Srixon ZXiR HL | Loft delta |
|---|---|---|---|
| 5i | 19.5° | - | - |
| 6i | 23° | 25° | -2° |
| 7i | 26.5° | 29° | -2.5° |
| 8i | 31° | 33° | -2° |
| 9i | 35.5° | 38° | -2.5° |
| PW | 40.5° | 43° | -2.5° |
Modeled from TrackMan-based norms scaled to each set's lofts, not measured for these models.
| Club | Moderate swing | Average swing | Faster swing | |||
|---|---|---|---|---|---|---|
| Quantum Max OS | ZXiR HL | Quantum Max OS | ZXiR HL | Quantum Max OS | ZXiR HL | |
| 5i | 167 y | - | 184 y | - | 200 y | - |
| 6i | 158 y | 152 y | 174 y | 168 y | 189 y | 183 y |
| 7i | 148 y | 142 y | 163 y | 157 y | 177 y | 171 y |
| 8i | 138 y | 132 y | 152 y | 146 y | 165 y | 159 y |
| 9i | 126 y | 121 y | 139 y | 134 y | 151 y | 146 y |
| PW | 116 y | 111 y | 128 y | 123 y | 139 y | 134 y |
| Club | Callaway Quantum Max OS | Srixon ZXiR HL | Δ carry |
|---|---|---|---|
| 5i | 168 yd | - | - |
| 6i | 159 yd | 160 yd | +1 |
| 7i(anchor) | 150 yd | 150 yd | 0 |
| 8i | 139 yd | 140 yd | +1 |
| 9i | 128 yd | 128 yd | 0 |
| PW | 115 yd | 115 yd | 0 |
| Estimated from loft specs · ±5 yd accuracy | avg +0.5 yd | ||
Loft is the biggest gap between these two sets. The Callaway Quantum Max OS has a 26.5 degree 7-iron against 29 degrees for the Srixon ZXiR HL. That 2.5 degree difference works out to roughly 6 yards more carry at the same swing speed, and it pushes the pitching wedge to 40.5 degrees, so check your wedge gapping. Construction differs too. The Quantum Max OS is a hollow body iron with perimeter weighting and an AI designed face, built for golfers who want the most help they can get. The ZXiR HL is a forged cavity back tagged for high launch, which suits players who want a super game improvement iron in a more traditional package with easy height. Note the set makeup: the Callaway starts at the 5-iron, while the Srixon data starts at the 6-iron.
Choose the Quantum Max OS if distance is your first priority and you are willing to sort out the gap to your wedges. Choose the ZXiR HL if feel and launch matter more, or if you would rather keep the extra $50, since it lists at $1,049 against $1,099. Neither set has editorial recognition on file, so let your own priorities decide rather than awards.