After months of deliberating, on-and-off, I finally placed an order for a RRA A4 20" Varmint 1:8 Wylde chambered upper. I plant to use it for varminting, 0-300yd, and the occasional 600yd target shooting, in that order of priority. I plan to load 55gr thru 77gr bullets. Not sure how the 55gr will fare but will try. Now comes the scope and rings/mount. I first looked at the Nikon M-223 series, because they have turrets (one of my top three requirements), but, they are calibrated to 55gr at 3100fps, do not have adjustable objective, and parallax is fixed at 100yd. Having never done sage rat hunting, i am not sure how this will work. My guess is ok but I wanted to spend a bit more (up to ~$500) and get standard turrets, something like a Leupold 6-18x40 VX-2 Riflescope (LEU110817). I'd rather have a 4-12x40 with good/bright (Japanese) glasses. Any suggestions. Side focus wouldn't hurt although I admit at my price range it might be hard. Searched all over my favorite scope vendor, SWFA, and can't find what I want. I should probably relax my requirements, but not sure what, since I have never done varminting. Also, not sure how good/bad are Nikon's M-223 series is and how serious are the perceived limitations. I do not care to pay extra to ask Leupold for a custom BDC because I do not plan to stick to just one load/bullet. I am kind of a cheapstake when it comes to one-piece mounts and want to keep 'em under $100. Burris PEPR are fine with me, but I don't care much for the picatini tops. Any suggestions? Am I too restrictive sticking to one-piece mounts? I am starting to open to the possibility of getting two scopes, optimized for one or two of the three applications I indicated above. But the money I'd spent on two scopes, plus mounts and rings, i'd be probably better of with a ~$1000 glass. Decision, decisions... rrrrrr!