I have a Merkel in 500NE and a friend has the identical model in 9.3x74 - they both wacked my cheek when the LH barrel was fired, and both trigger guards whacked my middle finger when the RH barrel (front trigger) was fired. I haven't really consciously tried to avoid this and both "symptoms" have disappeared ie the issue will go away for you too I reckon.

Great cartridge too BTW. (I need one of these too I think.)