I need to sight in my 7mm Rem Mag tomorrow. I will be purchasing Remington 7mm Mag 150 gr PSP Core Lokt unless there is a good reason to buy something different. I tried to go online to get ballistic info but my work computers will not allow me to access "firearm" websites from work. Does anyone have suggestions for sighting in? How high should I be at certain distances? Should I sight in high at 50? Dead on at 100? The area I am hunting could present me with a 200 to 225 yd shot in an open field. It has been a long time since I have sighted in a gun. This is a new gun and new scope (Nikon Pro-Staff 3x9 with the internal dots for different distances). Any feedback or suggestions would be greatly appreciated. Be safe out there guys.