Slim ... I use 'em exclusively. Have even built three different 10/22's that I tuned for them. In these rifles they are exceptionally accurate and the ONLY thing I use for small game hunting. My own 10/22 HAS put 5 shots into .037", although it was probably more a case of me zigging when I should have. But they will often print 1/4" groups at 50 yards. This from a factory barrel, albeit a stainless steel 22". The rifle started life at Wal-Mart.
A lot of the guys report that they are accurate in their rifles also. I've tried the target ammunition, standard velocity ammo, other hyper-velocity ammo, about 30 different types and brands and these Velocitors beat 'em all. I also like the 40 grain bullet for my hunting rounds. Taken fox and coyote with 'em too, not to mention the occassional porcupine.
Try 'em. You might even like them.