So my 11-year-old is outgrowing his Keystone Cricket .22 with iron sights. Been teaching him how to shoot for last 1 1/2 yrs. Mainly 25-50 yds at paper targets (max has been 80 & 100 yds). Just taught him fundamentals of safety, body positions, sight picture, trigger pull, breath/relax/aim/squeeze, etc... and Cricket has been great but it is getting a little small for him. Was thinking of upgrading to full-size .22 this year and introducing him to optics. But then thought maybe a slightly higher caliber rifle would be more practical for the future. Just wondering y'all's thoughts on this. Do i keep him training on larger .22, or was thinking maybe .243 or similar caliber to give him more options/flexibility in the future. What are your thoughts on caliber / rifle for next steps?