Sound like you had fun Mike, to improve your hit ratio you really need to have a go in perfectly still condition. shooting off a bench bag or quality bipod will assist greatly as will single loading the pellets into the barrel and not a mag if your gun allows it, slight imperfection in the pellet will have little effect at normal airgunning ranges but push that to 80-100-120 yards then it can make the POI move by an inch or two.
Bb