"We sight in rifles all the time for long range prairie dog shooting and with good equipment and ammo it takes less than 8 rounds to get them 'on'. We sight 'em thru the bore the "old" way. one shot at 25 yds. and make corrections for 100 yd. x4, fine tune them for distance and call it a day."
Do you mean to tell me the "old" way still works !??!
I guess; each to their own.............................