A bcmr file extension is related to the BC Framer 3D drafting program.
BCMR file extension - BC Framer data
What is bcmr file? How to open bcmr files?
File type specification:
The bcmr file extension was used in BC Framer 3D drafting program for creating floor and roof framing layouts.
Seems like the developer is no longer in business and the program no longer available.
This bcmr file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.