Is there any way to stop the cracks/chips you'll often see at the rear of sidelocks/sideplated guns? It's my understanding that they often result from a stock that is inletted too tight.

The majority of guns I have seen that have been used regularly show signs of fine cracks or chips in this area. I've seen it on sideplated guns right up to Purdeys. I have a couple just starting on my own guns and would like to rectify it now as opposed to just letting the stock split a few years from now.

Thanks..