Most of mine have been 15 yds or less, a couple at around 20yds. I don't think I've ever taken one further. I like to set up in thicker areas for bow, usually. Usually above 20 yds, I have few open shots, so I rely alot on the grunt - to bring them in, or back if they pass by.

I practice alot, and 30 is probably my max, and feel comfortable. I could see 40 on a feild, if I knew the distance within 3-5 yds.