Looking to purchase a Savage 10FP 223 used for target shooting current maximum range of 300 yards, I plan on using a Nikon 6x18x40 or a Burris 6x18X42, mostly I'm confused on bases and rings, I like the idea of one piece base anyone have suggestions.? I've searched a number of threads but having a difficult time locating correct bases and ring height needed. I would like to stay in a medium price range.