Just curious about the BL/BR arcs for the barbette mounted 13mm MGs on the ME-410.  According to my books, these guns could move through an arc of 70 degrees in elevation, each could move up to 40 degrees in azimuth independent of the other, and they could be fired together on a target that was close to directly to the rear.  This would seem to make them more like FR weapons, or perhaps RT, than BL/BR.  40 degrees each way is only slightly wider than the 60 degree FR arc.  Of course, none of the SF arcs are going to match precisely, but the forward firing capability of BL/BR seems to give them a bit much freedom.  Was the main consideration in choosing BL/BR for the two weapons to be independent?

Doug