iI will do some testing of the Sierra 200 in my 9.5X56 R this summer (I hope) also. This will be at the 1800 to 2000 FPS level though. This is the German Cape I posted a month or so ago.
I may also use this as a test in my .375 express rimmed (Martini). I have yet to have time to work any loads. I would rather shoot a 250-255 grain FN cast at the same velocity. Oh, if I could win the lotto and just do what I want!! I guess I would need to by a number though.
I am interested in any test with the Hornady (I like them) or the Sierra. I have had mixed results on actual game with any Sierra. This is limited to .30-30 and .303. Accurate, but came apart on real game.
Deer for the .30-30, and moose for the .303 175 grain. But, this was some years ago.