Browning A-Bolt 7mm rem mag
w/Leupold Vari-x III 4.5 X 14
w/Federal Premium Nosler Balistic tip 150gr

Now, to the question.
When sighting in, how long do you think I should wait between shots? I am concerned that warm/hot barrel temps could effect accuracy, compared to cold barrel. Is it enough to be concerned?
Thanks