also keep in mind that adding spacers will change where your cheek sits on the stock, some times it makes you sit HIGHER or lower, sop keep this in mind as you adjust length of pull!
and just so you know, the 10/22, is maybe one of the guns with the MOST aftermarket parts and stocks and such for it, so aftermarket stocks of correct length of pull can be had too, if you wanted!
https://www.gunmann.com/ruger-1022-stocks/