I am currently the happy (enough) owner of a Walmart special Remington 700. With 168gr BTHP's it's shooting right around 1moa, and I'm sure if the shooter improved so would the accuracy. I'm starting to become interested in longer distance shooting, likely along the lines of 500 yards instead of the 100-150 that I do most of my shooting at. Definitely not in the excess of 750 yards. Would I be better suited to get a "nicer" 700 to start working on, upgrading, etc, such as a SPS or Varmint with the heavier barrel? Or will I be able to achieve such shooting with the Walmart special and it's hunting barrel? I know there's a lot more to distance than this but I'm specifically asking about this one thing, aside from a lighter barrel is the Walmart special inferior as a starting point?