I had to look that up since not all of us are walking Ruger catalogs. My mistake for being a bit quick on the trigger.
For screws that seem 'stuck', my first suggestion is: Place the gun in a supported position allowing access to the screws. This could be a gunvise or simply some rolled up towels on a table BUT you need this to have some backing. For socket head screws, take a punch that will fit INSIDE the hex wrench cavity and give the punch 2-3 solid whacks with a smallish (8-16 ounce) hammer. For cross or phillips head screws, use a good fitting screwdriver insert or screwdriver(if you're willing to break the screwdriver handle) and apply the same 2-3 whacks.
This is usually sufficient to break the 'stuck' allowing the screw to be loosened. This has worked for me hundreds of times in removing Lok-Tited scope mount screws, screws in old military rifles, and screws in antique guns.
If you suspect the screws are Lok-Tited in, you can use an electric soldering iron to heat the screw head which will often soften the Lok-Tite BUT use extreme caution to prevent excess heat from melting the synthetic stock material.
