You can plug the numbers into most ballistics programs and get an idea. I doubt it is enough to matter until you get well past 300 yards. I use this, you'll have to click on the "advanced" version to factor in elevation.
http://www.hornady.com/ballistics-resource/ballistics-calculatorA bigger concern is how the effects of altitude, humidity, and temperature will have on a wood stock. I hunted there in 2010 with 5 other guys. We left Georgia at about 80 degrees, 500' elevation and 80% humidity. After 28 hours of driving we were in 30 degree weather, 7000' elevation and about 40% humidity. The 4 synthetic stocked rifles were still zeroed, the 2 wood stocked rifles needed adjustment.
