Jim is right. Don't use oil Based stains on gun stocks. Use alcohol, or water based stains. I should have said something along those lines. AF simply needs to be heated over a stove, or with a heat gun to " blush " it( think that was the term someone used, here), and of course, any acid based stain needs to be neutralized with water and baking soda. Use more baking soda than less. Do this before blushing the stain. I did not intend to suggest there was anything wrong with AF, BTW. I have a gun done with AF and it looks fine.
I mentioned the other stains only because the original post didn't indicate what color he was looking for. By All Means, NEVER burn rope around the stock or anything else. Its just chars the wood and damages the stock. I am also not a fan of painted-on striping, ala Leman. Trees undergo a lot of stress during their lives, from windstorms bending the tree. That is what is believed to be the source of the fiddleback. You can bring out fiddleback by boning, as I have described. Fiddle back moves, depending on what angle the light is hitting the surface of the stock when you are looking at it. ( Painted stripes don't move.) Its part of the magic of Maple, that endears it as a gunstock wood to shooters.
Oh, Boning was first used with the intention of getting the grains that raises up when the stock is stained to lay down, to make a smooth surface for the finish oil. Along the way of doing this, it was discovered that fiddleback that had not previously known to be in the wood popped out when the stock was boned, making utility grade stocks, ( both maple and walnut) look a lot better than first throught.