I would like to get a good Picatinny Mount and Ring set up for my Remington 700 Sendero rifle. I found a one piece picatinny mount made be EGW, I can get it in 0 MOA, 15 MOA and 25 MOA. I am using a Nikon Buckmaster scope, 4.5-14 with the nikoplex. I would like to be able to shoot out to 800 yards. Can I do this with a 0 MOA mount or will I need the 15 or 25 MOA mount? Also I found Burris Xtreme Picatinny rings, are they good for what I need?