So I bought a speed bead for the 870, but it doesn't jive with my Boyd's thumbhole stock. I'm selling the speed mount, and have a purchased the regular mount for the ff3. What I need to know is what is the best option to mount it on an 870. I already have a picatanny rail laying around that will mount to my 870, but I see a lot of folks using the saddle type mounts. The saddle would prevent me from having to drill and tap but its also more metal, bulk, and weight. What's the best option considering recoil and what not. Once again I already have a picatanny so i , all I have to do is drill and tap .