Shato,
This is the Standard Hawkeye,I realy like the looks of it,but they don't show it chambered for the .375 Ruger.

I did do some looking up on the .375 RUM and the .375 Ruger.
The ruger at 300 yds is 8.0- inches low with a 270 gr bullet.The .375 RUM is 8.9- inches low at 300 yds both with a almost 2 inch high sight in. The only thing you are giving up is 207 ft/lbs at the muzzle(.375 RUM @ 5042,the .375 Ruger @ 4835).Now at 300 yds the .375 RUM is @ 2269 ft/lbs with a velocity of 1935 fps.The .375 Ruger is 2786 ft/lbs and the velocity is 2156 Fps.
Now this all published info from Remington and Hornady,based on 270 gr bullets.
BBJ