Renaissance wax is good for the wood and the blued parts. I found it on Amazon for a price that seemed a bit more reasonable, but it ain't cheap.If you washed the stock and want to refresh it without coloring the stock while feeding the wood, try Renaissance Micro-Crustalline Wax-Polish. This is much better than Johnson Wax, car wax, or other polish that color the wood. Apply a thin even coat to the wood and allow it to dry for 48 hours. Do not glob it on, thin coat. When it is dry to the touch, buff with a soft cotton cloth.The addtional advantage is that you can handle the stock at the range without the wax making your hands and fingers sticky. After using the rifle, you can wipe down the wood and the bluing using the same cloth, it won't damage blueing. You can use it on the bluing too, if you wish. It leaves a nice "soft" shine. I love this stuff!
Brownell and Midway USA carry it. Not cheap, but its the best wax you can get for firearms.
Well Darn it! I thought you said lemon juice. Now every time I open my safe my lips involuntarily pucker up at the aroma............I've got to start reading slower.............let the words soak in ya know..........Straight lemon oil will go a long way to freshening up an open, hand-rubbed oil finish without changing the color or character of the grain or finish itself. It does enhance the grain characteristics, replenishes the oil, doesn't soften the wood, and can be wiped down for a subsequent application of hard-wood paste wax. Old English will also work, but it tends to build up over time, plus, it tends to darken dents and dings quite a bit more, IMO.
This is the right way to apply any of the oil finishes. Some dry quicker and you need to wipe it off after only 5 minutes, wait just long enough for the oil to get tacky then wipe it off. There's also no need to sand or steel wool between coats with this method.Many times in your instance I have taken a clean cloth and applied Pure Tung Oil (light application).Then after 15 min ,I wipe it all off.An hour later,apply another.Do this for a few day's and what you are left with is a nice oil refresh.