Still, I don't have any doubt that 1/2" groups will be attainable with the Predator.
300MAG, I really dont think you need to worry unless 1/2" is not good enough for you as a hunting rifle. It think this may be an example of unnecessary, extraneous detail for the job description. Obviously if this was a bench gun you could be concerned but I would be dang happy with a 1/2" gun that was reliable in the field.