Any time you change anything on a rifle there is the slight chance that it will effect the accuracy. I take the stocks off my rifles when I clean them all the time. When I check them back at the range I find more times then not, that the rifle accuracy is fine. I do suggest to get into a habit of trying to "feel" how much you tighten the screws back into the stock. If you can get them back about the same you should have no problems. Many of the composite sticks have a point where washers will take over and seat the final head of the lug locking screw into a certain position over and over.