osascript "set bounds of window" not working after Mavericks upgrade
Try changing the size and position attributes or using System Events instead:

tell application "Terminal"
    tell window 1
        set size to {1150, 850}
        set position to {50, 50}
    end tell
end tell




tell application "System Events" to tell process "Terminal"
    tell window 1
        set size to {1150, 850}
        set position to {50, 50}
    end tell
end tell