Originally Posted by maestro
Maybe it's ugly but tasty... This statical system - the barrel and the scope are held by the same massive steel rail - was very successful, this rifle has been never suffering from POI-shifts.
Because ultimately the scope is supported from the same point, the mounting serving to make the breech block and secondary block one unit. You would have trouble with this if that mounting wasn't used instead attaching the scope directly to separate units (thermal and frequency effects)