Another vote for Johnson's paste wax. At Walmart at least, it is on the mop and floor care aisle. It is for hardwood floors and furniture. Is the cheapest carnuba wax that you can buy with cleaners or abrasives added to it. I think that it is $5-6 and I have had same can for 3-4 years now. I just it on tung oil and BLO finishes on my military rifles. I also use it on the coffee table that I polyurethaned because the kids are such slobs.
Personally, I wouldn't use silicon spray on a stock either, too slippery. I like unbuffed wax on mine for protection and grip.
That is a nice stock, Swampman.