Having fired at least 30,000 rounds ( no exaggeration ) of CCI CB Shorts and CB Longs at farm pests since they came out in the early 1970's, at targets, starlings, sparrows, crows, rabbits, pigeons, groundhogs, rats, mice, moles, hawks, turtles, snakes, etc, I have a pretty good idea what they and the relatively newcomers on the scene ( the Remingtons you refer to ) will do.
They kill about like a rather powerful .22 pellet gun would do, usually better.
Animals below squirrel-size, no problem out to 20-25 yards or so even though I have made kills at twice that range and farther.
Squirrels/rabbits, keep it under 15-20 yards for clean kills with brain and forward chest cavity shots.
Groundhogs and possums are pretty tough to do humane kills on with this ammo even with head shots at 10 yards and under. 5 yards is better.
A well-placed chest shot will kill a possum, but it may take several minutes to die, and will almost certainly run off. Head shots on possum, best kept under 5-8 yards.
Remember, these loads are a lot weaker than .the 22 Shorts you hear stories about your great grandfathers and great uncles poaching deer with in the 1930's, and killing domestic hogs with during butchering time.
The full-40 grain subsonic .22 LR loads are much better killers. The hollow point versions may or may not be better performers.
Since you live in town, be VERY sure of your backstop as the 40 grainers eill go all the way through and riccochet off to parts unknown. The CB's will not riccochet off if you get a solid hit because they don't have the power to shoot all the way through the animal, except possibly on a head shot.