Like Ed I also find out which pellet performs the best and dial the scope in for that pellet. I keep a folder for each of my rifles. Inside the folder I keep all the targets from my shooting sessions, along with notes/remarks that I write out after and during each shooting session. I document simple things like scope adjustments and dial settings, which pellet the gun is sighted in for, did I find it necessary to re tighten any screws, did I apply loc-tite to any screws,,, stuff like that. When I take a gun out of one of my gun safes to shoot it I also take out the corresponding folder from my airgun filing cabinet and I take a look at the info inside to make sure I'm up to shooting speed with regard to that rifle.
The targets in the folder quickly and easily let me see how each pellet type performs in that rifle and also where they group in relation to the bullseye compared to the pellet that the rifle is sighted in for. This permits me to use other pellets should I choose to since I know how to adjust my aiming point,,,, 1 mildot up or down etc.....
Usually you can find a pellet or 2 that has the same POI as your hunting pellet. If you do, and they are cheaper than your hunting pellet, then you can practice with them. I don't do much target shooting,,,, like Ed (Shadow) my guns are for hunting, so if I do want to do a short session with a gun I'll usually practice with the pellet I hunt with.
Anyway, try keeping a folder for each of your guns. Besides being very practical it also helps increase your enjoyment of the sport and it will help make you a better shooter.
Jeff