tt...(op) to answer your question ,,,,yes you can go back to the sighter during the shooting of your group...if there is a change you can go back down to the sighter and fire as many shots as you like and can go back as many times as you like,,,just dont run out of time or ammo,,hahah,,,,,and the normal course of fire for LV/HV/SP is 5 x 5 shot groups at 100 yds and 5 x 5 shot groups at 200 yrds and for UL at Nationals 8 x 10 shot groups,,,,while at regionals it is usually 5 x 10 shot with UL,,,and there are occasional 5 x 5 with UL at local matches ( Visalia-Tacoma-etc),,,,I hope this answers your inquiry,,,,Roger