Do you have a bore light with an angled head? Do you have a keychain laser? There are a few ways to do this, and last time I did it with a semi automatic 22lr, it was with those plastic Tasco things where you put on a scope cover with a pin hole in it over the objective and a collimator with graph stuck in the muzzle held with a plastic pin. Probably the easiest thing today would be to get the universal laser bore sighter from Wal Mart (I forget the exact brand..), for around $45. But there are more frugal ways of doing this...you just have to be creative. Make sure your scope cross hairs are perpendicular by looking through the scope inside the house at a door jamb or wall edge with the rifle in a vise or cleaning platform that makes it level and perfectly vertical. It really depends on what lengths you're willing to go to save forty some odd bucks. I'm just saying it can be done to put you on paper at 25 yds, but you'll eventually need to sight it in at the range to be dead on and trustworthy. Just make sure those cross hairs are as near perfectly aligned vertical and horizontal with the scope rings not overly tight before you start making adjustments, or you'll be fighting an uphill battle. I can't count the number of folks I've helped at the range with a canted scope and some high dollar centerfire ammo after they have already gone through half a box. Nature of the beast with an auto-loading rifle in 22lr such as the 10/22. You really need to get some range time, and if you know how to make your adjustments correctly, it shouldn't be more than 25 rounds downrange before you'll know what you can do and get it on. Surely there have to be some public firing ranges up there in PA?