RE: Powerbelts
Somewhere further down this M/L topic, there is a similar question/thread. I had a response there with photo attached...kind of busy right now. Anyway, I took a nice 5x5 last year at about 80-90 yards with a 348 Gr Aerotip in Colorado. He side stepped twice and tipped over like a ton of bricks. I know another indivdual who did nearly the same thing.
Remember, in Colorado you cannot use pelleted powder, you must use loose powder. (110 gr of 777, 2F did the trick for me)