I like the Talley mounts also and they are aluminum. What I found on my Omega Dream Season rifle and Nikon Omega scope with 5" of eye relief was that the Talley mount put the scope about 1/4" to 1/2" farther back than the DNZ mount. This caused problems for me with eye relief since I had to be too far back on the rifle. With a different scope it could be an entirely different situation.
