"Smaug".17 HMR is a different animal. Not quiet, due to the sonic boom, so you must be planning on taking that one to a range or out in the wild.
There's a video on YouTube of someone hunting Egyptian Geese from at least a hundred yards. He was drilling them one after another, and they didn't know what was going on until he had his limit. Just amazing. Low recoil, flat trajectory. Kind of like .22LR, but with a flatter trajectory and a much more efficient bullet shape. I think they're about a 200 yd. gun, right?
Well the .17 is a diff animal for sure. At 50 yards they are too destructive to use on a rabbit if you want to eat it. Mine has the same zero at 50 and 100 yards at 2550fps...................... And I also vote for the rifle you picked the RWS 34. I have a gamo whisper 1200 I got in 08 and after a tuna trigger it does an ok job at 35 yards. And since I'm bad about buying things I have a nitro ram for it, but that is still on the parts shelf. Shoot the rifle 1,000 times and how you need to hold it will come to you.