Yes, plural. I have 3 Redhawks in .41 magnum. I have several boxes of Hornady 210 XTP bullets, and a keg of W296. I know the Redhawk can take the heat. I'll be using CCI 350 primers. Thinking 21 to 22 grains of 296.
Recently loaded some stout rounds for my .45 Redhawk using 300 XTP's and 23 grains of 296. I have been loading 296 in my .44's for years, and my favorite load there is also 23 grains behind Hornady's 265 grain slug designed for the .444 Marlin.