Proto-Concept C05 vs Proto-Concept C07
Side-by-side factory specifications. Differing values are highlighted.
Proto-Concept C05pocket cavity (forged SAE8655 face welded to S25C body) · SAE8655 chromium-molybdenum steel face, S25C carbon steel bodyProto-Concept C07pocket cavity (forged SAE8655 face on S20C body, 3-level face-thickness variation) · SAE8655 chromium-molybdenum steel face, S20C carbon steel body
Specification comparison
| Club | C05 loft | C07 loft | C05 lie | C07 lie | C05 length | C07 length |
|---|---|---|---|---|---|---|
| 4 | — | 22 | — | 61 | — | 38.5 |
| 5 | 25 | 25 | 61 | 61.5 | 38.25 | 38 |
| 6 | 28 | 28 | 61.5 | 62 | 37.75 | 37.5 |
| 7 | 32 | 31 | 62 | 62.5 | 37.25 | 37 |
| 8 | 36 | 35 | 62.5 | 63 | 36.75 | 36.5 |
| 9 | 40 | 39 | 63 | 63.5 | 36.25 | 36 |
| PW | 45 | 44 | 63.5 | 64 | 35.75 | 35.75 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The C07 is the stronger-lofted set — up to 1° stronger than the C05 on matching clubs. Expect longer carry per numbered iron but a flatter descent angle; gapping at the wedge end is where that shows up.
Both charts are reproduced in full on their own pages: Proto-Concept C05 specs and Proto-Concept C07 specs.