wood

Hi All, My wooden rifle stock got wet the other day and some white spots appeared where rain drops had hit it. I added some stock oil to it which got rid of the white spots, but now in certain lights the finish on the stock is uneven (see pictures). How do I resolve this?

I have some free time and am thinking about trying to make my own stock, well learning the art of! Does anyone have any good links/or names of books I can have a look at before but butchering some practice pieces of wood!!! Thanks Nick