The .22 Magnum hands down. It's a blast to shoot, about 2 1/2 times the power of the .22LR. It's a great cartridge for bolt action and lever action rifles. Brings the power of a larger caliber to the .22 platform for what I consider to be a reasonable cost. For me, I use the .22LR for the semi-auto's (795, 597VTR, 10/22, ect) but in the others I shoot the .22 Mag. My favorite rifle to shoot is still my Marlin 982 and a lot of it is because of that .22 mag cartridge. btw - the Henry Golden Boy in .22 Magnum is high on my want list.