I believe that ones that think the .20 isn't enough gun haven't tried the Berger 35 or 40 gr bullets, the Nosler 40 gr I like even better. I have been shooting this .20 cal now for about 8 yrs. The only problems I had were with the V-max bullet, splash hits and crater entry holes, one run off, blew shoulder off, but he went anyway. It was a 200yd broadside shot, if I had a Berger or Nosler then it would not have ran off. I have shot more than a 100 with the .20, my next one will be a X-Bolt Browning modified to a Tactical.20
Last winter I snuck out on a coyote, it was two coyotes, at the top of the hill where I planned to shoot the one, I could shoot both of them. I took the less wind one first at 300yds, the other was nearly full broadside wind at 15-20 mph, shot him at 320yds, both one shot kills. I like the fact that I shoot it 1.5" high at 100yds, and it is dead on at 300yds, or 1" low depending on air. As long as it is under 350yds, I don't need to worry about how far it is.