What kind of ammo is used for the J C Higgins- Model 101.25?

The J.C. Higgins Model 101.25 is a .22 caliber rifle, typically designed to use .22 LR (Long Rifle) ammunition. It may also be compatible with .22 Short and .22 Long cartridges, but .22 LR is the most common and widely used option for this model. Always check the owner's manual or markings on the firearm for specific ammunition recommendations.