How to sight an air rifle?

This is actually a very good question, as most people make the mistake of using sandbags when sighting in an air rifle. The question is, what type of air rifle? If it's a springer, you want to hold the gun in a relaxed way. If you hold it real tight against your shoulder, it will be hard to sight in because of the unique recoil. The same goes for sandbags with a springer. If you are going to use sandbags, put your hand underneath the forestock in a relaxed way. Also, get a scope stop, so that you can stop "scope travel" which tends to occur with springers. As for PCPS, and pumps, there is no recoil, so you can pretty much sight in like you would a firearm.