This will help a lot when buying/researching boots online because MONDO sizes don't always match between companies.
Simply post your boots (including the size) and their BSL.
I'll start it off...
28.5 Lange Freestyle 80 - 328mm BSL
28.5 Full Tilt - 318mm BSL
29.5 Full Tilt - 326mm BSL
28.5 Salomon SPK - 327mm BSL