Hi, I just bought my 1st rifle - a CZ 452 Lux .22 lr with iron sights. Now I need recommendations on ammo for practice/target shooting in the range. Coulld you share your experience in the ammo you use with bolt action .22 rimfire? I'd like to start with economical but reliable ammo that will NOT do damage to the barrel of my CZ. Please list a few brand names & online retailers/stores where I can purchase. Thank you.