I usually try to settle the action into the stock and tighten the front screw first. The rear screw just has to stay put and if there's a center screw(M70) it is just barely tightened. Don't over do on this one or you may twist or spring the action.. Due to my arthritis I use a ratcheting screwdriver with a handle that pivots to one side. This gives me more leverage with less stress on the joints,,I don't use it when assembling a rifle. I use it mostly when dissasembling them.