I was able to get out to Home Depot today and got a bottle of Titebond III (Ace didn't have it) . They also had Titebond ['The Original'], Titebond II ['Premium'] and the Titebond III ['Ultimate']. But since y'all think III is the way to go, I bought a bottle ($8.61).
I couldn't find any scrap stock pieces that weren't usable for something, so I tried it on a pair of scrap pieces of Walnut lying around. Same end mill finish as the Mauser stock groove/tongue I cut, rubber banded together as I would the rifle stock. I'll check it in 24+ hours and see how it turns out.
I also noticed that the toe of the stock had been broken off/cracked extensively at some time in the past, and some unknown previous owner had 'glued' (or epoxied) it...I can't pull or twist it apart with my two somewhat flabby arms, so I guess it's a good join...A little off; I can feel the uneven surfaces, it'll take a bit of sanding and maybe a little filler to even both sides out...
I wish I knew what this toe join was 'glued' with, it easily passes my lax quality control for 'glued' joins...
