yes- It is undersized to the hole, but has had a rod pounded onto it, slugging up the front end and the rear end. if you drill a hold into the end you can see, then screw in a long shanked wood screw that you can get a hold of with long nosed locking plyers, then tap to plyers to 'pull' the plug out. Don't use too bit a screw as that will 'obturate' (expand) the lead to a tighter fit inside the hole. If the lead is too tight to pull out, try thumping the stock on the sides, top and bottom with a well-padded hammer handle so you don't mark the stock's surface. The thumping will compress the lead where it contacts the sides of the hole, making it easier to remove. Mine loosened up just with the work I did re-finishing the stock, filing, and using an orbital sander (much vibration). The vibrations of the sander did what thumping the stock will also do.

My rifle weighed 10 1/2 pounds as obtained, 9 1/2 pounds now with the lead removed. Offhand, it holds a bit better now due to the lighter butt, heavier barrels. It still mounts well and the lead was not needed, indeed, made the rifle a bit ungainly due to excessive weight for the calibre. I've been told that all Kodiaks have it. Whether yours does or not, one merely has to unscrew the butt plate & have a look-see.