RE: .22 ammo...Is it all the same??
My CZ 452 loves CCI mini-mags but it shoots the bulk stuff good enough,the10-22 usually shoots everything pretty good.And NO is the answer to your question is all 22 ammo the same,every gun will have a favorite even two rifles exactly the same may shoot different with the exact same ammo,like night and day,so try several brands,bullit styles,bullit weights,standard and high velocity,you will find something that ruger loves,my 10-22 shots remington sub-sonics very well.