i just hunt, and never sit down just to shoot groups. however, my mk2 wood/blue 30-06 does everything i ask out to 300-350 yards. right after i got it (several years ago) i zeroed it with 180gr partitions 3" high at 100. every season since then, a couple weeks before the season opener, i shoot a fouling shot or 2 then shoot one final round to ensure it is still 3" high. i may have had to make a scope adjustment, but if i did, i don't remember doing so.