I've tried awfully hard to love 17HMR, and I've bought/sold a number of them over the years. The only one I own now is a Marlin 917 with an upgraded trigger, and it's now living out west as a dedicated gopher gun. Speaking of that, we ran over 1,600 rounds through that gun earlier this week.

I'd say "the fur was flying" but if you've shot that caliber at Richardson Ground Squirrels, allot more than fur flies. lol Overkill in a way, but since it has more reach than 22LR (meaning, allot easier to shoot longer range effectively) it really isn't. More reach=more dead gophers without having to move.
I still prefer 22LR for gophers as it's a greater challenge and I like the CZ more than the Marlin. My CCI Blazer HPs do a real number on them, and the audible "pop" of the impact can be heard from quite a distance away. I will say, when the wind picks up it seems to have a bigger impact on 22LR than 17HMR. I was holding almost 12" into the wind and curve-balling them in. (once I had it sorted-out) I sort of discovered that you can get a sense of the wind speed by how flat/low the cloud of dust blows away on the misses. Is that "reading the wind" or reading the dust? lol
Anyone care to share their experience with using a 20 grain soft point on larger game, like Beaver? Can it be used in place of 22 magnum?
HMR seems to be either the ballistic tip variety, or hollow points. I don't believe there is a soft point variety, but please correct me if I'm wrong. I first bought a 17HMR for groundhogs, and after load testing determined the BTs were more accurate in that Savage. First groundhog I shot bang/flop, but it was under 40 yards. Every groundhog after that was @ 100 or more, and body shots did not anchor them. Tried 22WMR before moving to centerfire, and without question, 22WMR was a better groundhog caliber. Simply put, a groundhog body hit and you'll have to look for an entry wound half the time. Not the case with 22WMR.
Could 17 be used in place of 22WMR? Certainly has an accuracy edge and if the rifle likes the HPs, I don't see why not. For me, real world results out to 125 yards=the 22WMR just got it done better, even a quick centre-mass shot you have to get-off quickly, the results were confidence-inspiring.