Well if I looked at the right one, it should do okay. You should have the barrel free floated and trigger work done. If it is not pillar bedded you should have them put in and glass bedded. Is the contour of the barrel thin, medium weight? The heavier the better for long range work. Your barrel length looks to be okay. Somebody that knows Ruger's on here should chime in soon. They make good actions with some love they will shoot pretty well. There is just not a lot of aftermarket parts for them.
You may find an aftermarket stock. Start at midwayusa.com. They have quite a bit of stuff. Sounds like it might be a good one if the barrel is a 26". That will help with keep velocities up for getting your round down range accurately.