RE: qustion about .17hmr
First you state that you know all about gun safety, then in another post you state you want to shoot your .22 in your basement? My advice for you is to put the gun back in the box, lock in a secure place and don't touch it again until you (1) take a good shooter safety education course, and (2) read the instruction manual completely over and over again until you FULLY understand everything in it.