Just curious as to why one doesn't see more big bores being built on these receivers. Seems they would be highly desireable becasue of their larger bolt diameter.

http://www.dumoulin-herstal.com/en/a2000lm.htm

these are teh former "legacy" mausers, including their gibbs offering -- it didn't sell, at 1/2 the price of the GMA ...

is anybody importing them.

not currently -- though you might can work a 10 unit deal -- iirc, they had beeen 1295 in 2006 -- and just didn't sell ..