Bach 10½CW vs Bob Reeves Classical 10-1/2C
Both mouthpieces share similar core dimensions — the differences are in the details.
Mouthpiece A
Bach 10½CW
• Trumpet
Cup diameter15.90 mm / 0.6260 in
Cup depthMedium
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
Bob Reeves Classical 10-1/2C
• Trumpet
Cup diameter15.90 mm / 0.6260 in
Cup depthMedium
Rim width—
Throat diameter3.66 mm / 0.1441 in
BackboreClassical BB
Finish—
Material—
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 15.90 mm / 0.6260 in.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 3.66 mm / 0.1441 in, so resistance feel will be comparable.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.