|These are not made for 45 Colt ammo but they worked on some of my revolvers. The Dan Wesson and 1928 Colt New Service worked well with anything. The S&w Model 25 with Magna grips would not allow the loader to line up at all. With different grips, the S&W would not work with A-Zoom snap caps or Federal ammo, but it did work with my reloads. The Colt Anaconda wouldn't work with snap caps but worked with Federal ammo and reloads. I do not have a Ruger Redhawk.
The 45 cartridges are tight and hard to load at first, but once they get broke-in, the function is great.|