Bruno Tilz 305-7 vs Schilke 47
The Bruno Tilz 305-7 has a wider cup diameter, the Schilke 47 has a larger throat opening.
Cup Diameter
The Bruno Tilz 305-7 has a cup diameter of 25.00 mm / 0.9843 in compared to 24.99 mm / 0.9839 in on the Schilke 47 — a difference of 0.01 mm / 0.0004 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Schilke 47 has a wider throat (5.95 mm / 0.2343 in vs 5.80 mm / 0.2283 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.