Ok here is a wide range question. If building a custom 300 win mag what should be an expected results from a gunsmith. In other words if shooting a custom built 300 win mag at say 700 yards should someone expect the rifle to be able to hit a golf ball, or baseball, or basket ball, or a house. I have never had a custom rifle built and want to get a GENERAL idea on what to expect as a good or bad result. I hope this makes sence.