That is a perfect application of bedding compound on any rifle. The end grain behind the barrel and behind the tang are the two places where cracks are going to appear if they ever do. By glass bedding these areas, you strengthen them permanently, and extend the working life of any stock. Considering the price of quality wood, and the cost of the work to turn out a truly well fit, and beatiful stock, using Acra-glass is just the ticket to protect your investment.
I also like to use glass, applied thinly with a brush or swab, to the inside of the lock mortise, to the trigger mortise, and to the end grain under the buttplate. Those are the other "weak" spots in stocks, that benefit from the glass. :hmm:
YOu are reminded to use a good release agent on all metal parts near anything you might bed with epoxy or fiberglass, to keep them from being permanent attached to the wood.