I've used mine for prairie dogs! Don't laugh too loudly, or you might spew your beverage out your nose onto your keyboard!
Took a young friend new to firearms to prairie dog shooting, but only had my 223 bolt rifle, and the PTR91. One of those days where you just can't miss? This was one of those days. I hit one prairie dog at just over 400 meters, on the run. First shot fell short, behind him. Corrected for lead, and voila! Got him with the next shot.
I have witnesses!
I seriously doubt I could do this again, as I am at best only a mediocre shot. But that day made an impression on the new guy, and now he is a gun owner too.
As far as a walking type hunting rifle, I would choose something lighter. My $.02
YMMV