That crack is almost imperceptible and probably going nowhere in that location. I would leave it alone unless it gets worse.
JR
A problem we have in the northland involves fluctuating humidity and temperature levels, which tends to amplify problems with wood. I guess I'd keep an eye on it, and decide what to do, or, not do, based on that observation.
I have a little crack on my Remington model 17 in the area where the trigger guard meets the stock. It has been there since I bought the gun 40 years ago, and may have been there long before that, and while it hadn't gone anywhere, I did glass bed the head of the stock a few years ago.
I've also seen catastrophic failure of a butt stock from a crack that had been little, but, decided it wanted to go big time.
Best,
Ted
