I've gone through 2 sets of bases trying to keep the scope on the Ruger Edge. One set was Ruger 30mm and the other a set of Leupolds 30mm. In all fairness these rings had some age on them and had ben swapped around a few times. The 338 Edge with a good brake is hard on one screw scope mounts and as tuff as Rugers are the the weak link is the one little screw that holds the bases to the action! Burris use to make a 2 screw base that would give you a little windage adjustment but have not made them in years.
Murphy Precision MurphyPrecision.com - Scope Bases, Rings, and Assorted Shooting Accessories.
makes the best solution to the base issue but you have to drill and tap your action.....If the set of bases on the Edge fails again I'm going to go this route. If your not carefull you can easily spend more $$$, time and agrivation on the bases than you paid for the Ruger in the first place.
The 338Edge I built used an action that had been modified a little. You can see in the pic the Ruger front lug was shaved and a Remington/Savage style recoil lug was used. The original trigger has been replaced. It also was set up as a single shot because there is no reasonable way a Ruger long action will cycle anything much longer than 7mag or 300WM. I have to pull the bolt to get an unfired 308 Baer or 338 Edge out of the action.
Personaly I would never put this kind of work into a Ruger. IMHO They make great hunting rifles but are a poor platform for long range /target units.
The last ½ dozen rifles I've aquired have all been Savages.....Much easier for me to work on and a whole lot cheaper.......Depending on how you do it!