While it is true that Ruger and other companies don't float their barrels at the factory there is no problem with floating them. I like to have the action and chamber area of the barrel glass bedded and the rest of the barrel floated. My Ruger 77 is done this way and I shot five shot groups with its favorite load as small as 3/8", it normally averages less then 3/4" for five shot groups so I would say to go ahead and do it.