Well first I suppose it has to be accurate - nowadays good rifles are shooting to 1/2MOA without modification from new, which means a decent barrel and trigger. (with decent but not ridiculously carefully loaded handloads). if it won't shoot comfortably inside the inch, I don't want to own it or describe it as a rifle . An example of the blacksmiths art, but not a rifle.
Next it has to feel right and be set up right.
It mustn't rattle
Then it has to function reliably - hold zero rain or shine, which means decent wood, and it has to feed and eject relialby smoothly and fast. That means a straight line feed and a decent ejector, which doesn't depend on the force of the bolt being pulled back.(you may need to clear the breech quietly when climbing though a hedge etc.)
And then it has to be lucky.
I had a Sauer 200 in 270. That was a $2000 rifle. Beautiful wood, beautiful blue, smooth bolt, came up on line adequately. I knew it was NVG in the shop, but I was persuaded. (It was a Sauer after all) **** trigger (unrecoverable because of the design of the cross bolt safety), and one day it failed to eject. It also wasn't lucky - welllyou wouldn't be if you'd shot one, were swinging onto the next and there is an empty on the tray.
POS - it went inside a week.
Don't worry about hitting them hard, just hit them right.