This same rifle was my introduction into long range shooting. It is a great starter, however as you have found out the stock is less than optimal. Probably not the worse one out there, but there are definitely better. Actually mine has shot reasonably well with it considering. Easily sub-MOA. However, like you I have looked into other stocks that are more rigid and just plain better, and that aren't the high end ones that run a little higher on the price tag. What I came up with are the Bell and Carlson and the HS Precision. Both seem to get good reviews. The B&C is a little less expensive, but I don't think you give up anything to the HS that I can tell. Both have aluminum bedding blocks. I think I am going to actually run the B&C on the 700 SPS V here real soon, and use the HS for another build. I saw on Stocky Stocks that you can order them like you want them wiht a few different options. Either of these is probably going to be your best bet.
