One hundred degree heat index yesterday, cut hayfields,was set up at 9 am,packed it in at 430pm, saw 20 groundhogs, problem was they only stayed out from 30 seconds to 2 minutes max, a small window in which to shoot, my shots were at 150,250, yards I shot at 12 and killed 12, beautiful spot along the Mohican fields are virtually endless. I'm not complaining, quite an experience.My best shot was at 250 in the ear,popped his eyeballs out, the 17 hornet can shoot, or is it the shooter?Addendum in reply section.