They're not exactly rare but they're not common where I live either: a shooting and hunting friend of mine is different than most of us, he wanted to whittle his rifle collection down, not expand it, to the bare bones of utility. But not in your usual .30-06 or .243s, he handloads, he likes less common chamberings and old school rifles , just likes to have something a little different in general, and doesn't hunt further than 400 yards, usually inside of 250.
His 3 centerfire rifles to do everything that he'll ever want to do in his life ended up being a tikka (I think, either that or a CZ) in .204 Ruger and a pair of mint condition Husqvarnas, one in 6.5x55 Swedish and the other in 9.3x62 Mauser. I sat and thought about it…and dang it I can't really think of much better choices for the kind of hunting he does. And all very interesting rounds to me, again not at all rare but also a bit off the beaten path for most shooters.