If you want a modern bolt .303, then I agree that the closest way to get their is to do what our fathers and grandfathers did (and for which there are lots and lots of books/articles/plans for): Find a good P-14, and then sporterize it! You would be amazed at how nice a rifle you can make. Of course, you will spend lots of money in gunsmith fees (my guess, about $300 to $500), but what the heck, it will be neat anyway.
Take a look at some of the old gunsmithing books, and the old Williams Sight Compay paperback book on converting military rifles, and you will see what I mean. This was regarded as very routine stuff back in the 40s and 50s. This would include cutting and rewelding the bottom of the magazine well, to remove that "downward bulge," and putting it into a new stock. Again, very easy stuff for a competent gunsmith.
Big Paulie