I have a Winchester Model 190 .22 rifle. Had it since long ago when my big brother bought it for me 20 + years ago. I love this rifle and have now started shootin it again. Its as fun as I remember it being. And cant beat the price of the ammo. Of course now I want a better scope than the Weaver it came with it when purchased. Anyway, to my question(s). What is the differnce between my Winchester Model 190 and any given "10/22"? To be specific....what does the 10 stand for and how does it make it different than my WM 190.? I've tryed looking it up with no results. Must not be putting the correct search words. Thanks in advance for you help.