Just clean it and oil it before you shoot it next. And when you are done shooting it, do the same again. There is not much to break in on a 22, especially a bolt action. Breaking in a gun is an over rated thing for run of the mill, walk and stalk or plinker guns. Probably the best thing that you can do for a new gun is to clean it and oil it before you shoot it for the first time, then after that its all about maintanance. For competition, long range shooting guns, a break in cylce is a good idea for them.