Thanks all, it's sitting on the mantel piece over the fire slowly drying out before I attempt anything.
Whats the discoloration and the black line on the end grain? Did you by chance remove some finish from that butt end?
Dunno, but they both have it and from memory it's been there the whole time (years). I may have rubbed the finish off taking the limbs off/on, it's a tight fit down there.
I wonder if they used epoxy on that joint. I think I would skip the CA and get some epoxy in there. Might wait a few days before glueing and clamping, sometime warped wood relaxes after it has re-stabilized its moisture content.
I have some very thing laminating epoxy so I might have a go with that, pry apart a little and warm up the glue so it gets into all the tiny cracks. I did also think about drilling a hole a little further along from the end of the split and fill with epoxy so it acts as a stop.
I've also just noticed a hairline crack on the belly side glass right on the butt end (between the butt and the bezel). Whatever/If I do I will pull it quite a few times on the tillering tree before taking it near flesh