My favorite time of year is 12/26! That is the day all the new gun owners go to ranges /gravel pits and shoot boxes of ammo @ 100yds to zero new guns and leave brass on the ground. I have collected 1000s of cases. Off a good rest, paying attention to sight picture/trigger press/etc. shoot 1 round at a 25yd. target. Make a sight correction to bring the next shot dead on @ 25 yds(remember 1/4" @ 100 means X4 at 25). Shoot another round. If it is not exactly at point of aim, adjust again and shoot #3. You should be dead on now. Mark those holes/new target and move it to 100 yds. Again-careful aim/marksmanship-fire one shot. Note the hit. Now, with a final adjustment for your desired POI-adjust the scope and shoot a group of 3. If you do it right you just zeroed your riflr @ 100 yds to your desired POI for under 10 rds of ammo. Now you can practise with confidence in realistic hunting positions.