http://www.grindtv.com/wildlife/14-y...mountain-lion/
Used a plastic playhouse for a blind. Based on the shape of the trigger guard, his rifle looks like a Remington 783. Article says it's a 30-06.
ETA: Rifle pic in this article http://rapidcityjournal.com/news/loc...e0d008645.html
"He decided he was going to go sit out there until 7, when he had to do milking chores," Lisa Streff said. "He said he'd go back out again at 5:30 in the morning if it hadn't returned that night. But even though it was a possibility, none of us expected the cat to come back that evening."
Stout lad.
Okie John