Hombre,
Not meaning to quarrel with my good friend Griff, but that is an
EASY fix. I have made several Winchester hard rubber buttplates that were completely missing the last inch look undetectable. Here's what you do--
I do not know if you can get this product in the "Land Of The Swedish Bikini Team"
![Very Happy :D](./images/smilies/icon_biggrin.gif)
but we have a two part epoxy thats called PC-7. Its similar to modeling clay and it dries to a grayish color. I'm sure you guys have something similar.
You get yourself a Dremel tool or some type of a handtool so you can scratch up the areas that are to be glued. This helps with adhesion. Mix up the epoxy and get it in the cracked area and actually make up pieces that are gone. Make it slightly larger so when it dries you sand/file down to the original size.
After a full day or two of drying, get your Dremel tool (or handtool/sandpaper) and work it down to the original baseline. Take your time---its tedious but easy.
You will be left with a perfect buttplate but with gray areas. So.........get some flat black or satin black paint and blend it all in, preferably with a small artist's brush.
Aftr it dries, wipe your whole gun and buttplate down with your favorite oil.
I have made MUCH larger repairs on Winchesters of 45 caliber years ago and they are still holding up after many rounds.
With a rare rifle like that, your better off keeping it "right"
![Wink :wink:](./images/smilies/icon_wink.gif)
------Sixgun