I took a chance on a nice G grade Lefever a couple years ago that appeared to have a split in the buttstock, and the buttplate bulging outward from the butt. Because of the split, I got it for a very very good price.
When it arrived, I pulled the buttplate and found a hole filled with lead shot, just as I had suspected. The shot had expanded as it oxidized, and split the wood. After I dug out the old shot, it was very easy to apply some Titebond II wood glue and pull the crack completely closed with rubber tubing to clamp it. Then I turned a close fitting dowel of walnut, and glued that in the hole to further strengthen the stock. The deformed buttplate was easily returned to normal shape by putting it in very hot water and bending back to its' correct curvature.
