You can order your stock with the exact contour and still get it wrong.
For instance Palma contours have a straight cylinder 1.250" dia for X inches before starting the first taper.
Some barrel makers have different lengths for this straight cylinder......
Some smiths cut different lengths off of the breech end before machining and chambering......
Both of these variables can result in a large range of finished straight cylinder lengths on your barreled action. Therefore most stock makers will insist that you specify what this dimension will be when ordering your stock.
Example of this being a problem is when you take a stock with a properly cut light, medium or heavy Palma contour that starts the first taper @ 2" from the receiver face and try to stick a barreled action with same contour barrel except with 2.5" straight cylinder before the first taper. This would cause the exact same type of interference as you pictured and described above.
**Failures of customers to order and supply components with correct specifications is just one more reason I stopped taking individual customer spec'd builds years ago.
***I'm not saying the OP did anything wrong or criticizing in any way. Just throwing this out there in hopes of saving others some heartache and aggravation because they don't know what they don't know.....
./