I seen some tests on the 17 verses the .22LR
the .22lr actually had more penetration than the 17. that little bullet is just way to small if you ask me.
Well duhhh!!!.............. a 22 LR is a 36 or 40 grain solid style bullet its not designed to expand on impact like the 17 HMR's. Havent you ever talked to big game hunters who prefer a heavy lead cast bullet over a lighter faster jacketed bullet, because the heavier lead cast bullets penetrate deeper???? If you ask me its kinda retarded to compare penetration between a 17 HMR and a 22 LR since they are both designed so differently.